ПРОИЗВОДСТВО ПОЛИЭТИЛЕНОВЫХ ИЗДЕЛИЙ С УЛУЧШЕННЫМИ ЖЕСТКОСТЬЮ, УДАРНОЙ ВЯЗКОСТЬЮ И ПЕРЕРАБАТЫВАЕМОСТЬЮ

Изобретение относится к этилен/альфа-олефиновым сополимерам. Полимер содержит этилен и по меньшей мере один альфа-олефин с 4-20 атомами углерода. Полимер имеет отношение индекса расплава (ОИР) больше чем приблизительно 40. Полимер также имеет значение Mw1/Mw2 по меньшей мере приблизительно 2,0, где Mw1/Mw2 представляет собой отношение средневесовой молекулярной массы (Мw) для первой половины кривой фракционирования при элюировании с повышением температуры (TREF) из кросс-фракционной хроматографии (CFC) к Mw для второй половины кривой TREF. Полимер также имеет значение Tw1-Tw2 меньше чем приблизительно -15°С, где Tw1-Tw2 представляет собой разницу средневзвешенной температуры элюирования (Tw) для первой половины кривой TREF и Tw для второй половины кривой TREF. Технический результат – получение полимера с улучшенными физическими свойствами. 9 з.п. ф-лы, 8 ил., 10 табл., 10 пр.

КАТАЛИТИЧЕСКИЕ СИСТЕМЫ И ПРОЦЕССЫ ПОЛИМЕРИЗАЦИИ

Изобретение относится к способу полимеризации олефинов с использованием мультимодальных каталитических систем, к способу контроля старения мультимодальной каталитической системы и к контейнеру или резервуару. Первый способ включает (а) приготовление каталитической системы, включающей бисамидную каталитическую систему и небисамидную каталитическую систему; (b) хранение мультимодальной каталитической системы при регулируемой температуре менее чем 1°С; (с) контактирование мультимодальной каталитической системы с С2-С4-альфа-олефином в процессе полимеризации и (d) получение мультимодального полимера. Второй способ включает (а) приготовление указанной выше каталитической системы и (b) транспортирование этой системы в переносном резервуаре, где переносной резервуар поддерживается при регулируемой температуре менее чем 1°С или менее чем -9°С. Контейнер или резервуар содержит мультимодальную каталитическую систему, в котором она поддерживается при регулируемой температуре. Заявленная группа изобретений ...

ВОДНАЯ КОМПОЗИЦИЯ ДЛЯ НАНЕСЕНИЙ НА ТВЕРДУЮ ПОВЕРХНОСТЬ С УВЕЛИЧЕННОЙ СТАБИЛЬНОСТЬЮ

Данное изобретение относится к водной композиции с увеличенной стабильностью для нанесений на металлическую поверхность, включающей, по меньшей мере, одно липофильное соединение и, по меньшей мере, один сополимер, отличающейся тем, что, по меньшей мере, один сополимер представляет собой гребенчатый разветвленный сополимер, проявляющий чередующуюся последовательность мономерных звеньев (a), имеющих, по меньшей мере, одну гидрофильную группу, и мономерных звеньев (b), имеющих, по меньшей мере, одну липофильную боковую цепь, где, по меньшей мере, одна гидрофильная группа мономерных звеньев (a) представляет собой, по меньшей мере, одну карбоксилатную группу, и где мономерные звенья (b) имеют одну липофильную боковую цепь, которая является линейной углеводородной цепью с 4-20 атомами углерода. Кроме этого рассмотрен способ получения указанной композиции, а также применение для обработки металлических поверхностей, предпочтительно в качестве смазочно-охлаждающей жидкости, в качестве смазочного ...

МУЛЬТИМОДАЛЬНАЯ ПОЛИЭТИЛЕНОВАЯ ПЛЕНКА

Изобретение относится к мультимодальной полиэтиленовой композиции для формования, в частности для пленок или геомембран. Композиция включает: (А) от 40 до 65% по массе полиэтилена с низкой молекулярной массой, имеющего средневзвешенную молекулярную массу (Mw) от 20000 до 90000 г/моль, причем полиэтилен с низкой молекулярной массой имеет значение MI2от 500 до 1000 г/10 мин согласно стандарту ASTM D 1238, (В) от 5 до 17% по массе полиэтилена со сверхвысокой молекулярной массой, имеющего средневзвешенную молекулярную массу (Mw) от более 1000000 до 5000000 г/моль, и (С) от 30 до 50% по массе полиэтилена с высокой молекулярной массой, имеющего средневзвешенную молекулярную массу (Mw) от более 150000 до 1000000 г/моль. Причем плотность полиэтилена со сверхвысокой молекулярной массой и полиэтилена с высокой молекулярной массой составляет величину в одном и том же диапазоне, и обе плотности находятся в диапазоне от 0,910 до 0,940 г/см3. Молекулярно-массовое распределение мультимодальной полиэтиленовой ...

ПОЛИБУТАДИЕНОВЫЕ ПОЛИМЕРЫ И СОДЕРЖАЩИЕ ИХ КАУЧУКОВЫЕ КОМПОЗИЦИИ ДЛЯ ПРИМЕНЕНИЙ ПРИ НИЗКИХ ТЕМПЕРАТУРАХ

Изобретение относится к полибутадиеновым полимерам и каучуковым композициям. Получают 1,4-полибутадиеновый полимер, имеющий содержание цис-связей от 85 до около 92 %, содержание виниловых связей от около 1 до около 5% и содержание транс-связей от около 3 до около 12 %, при этом полимер имеет энтальпию плавления ΔНот около 5 до около 25 Дж/г°С при измерении дифференциальной сканирующей калориметрии ДСК. Изобретение позволяет улучшить стойкость при низких температурах при сохранении прочности и износостойкости каучуковых композиций. 3 н. и 12 з.п. ф-лы, 2 ил., 4 табл.

ДВОЙНАЯ КАТАЛИТИЧЕСКАЯ СИСТЕМА ДЛЯ ПОЛУЧЕНИЯ СОПОЛИМЕРОВ LLDPE С УЛУЧШЕННОЙ ТЕХНОЛОГИЧНОСТЬЮ

Изобретение относится к полимерам. Описан полимер этилена, содержащий сополимер этилена/1-бутена, сополимер этилена/1-гексена, этилена/1-октена, или их комбинацию и имеющий плотность в диапазоне от 0,89 до 0,93 г/см3; отношение средневесовой молекулярной массы к среднечисловой молекулярной массе (Mw/Mn) в диапазоне от 3 до 6,5; z-среднюю молекулярную массу (Mz) в диапазоне от 200000 до 650000 г/моль; параметр Карро-Яшида (CY-a) при 190°С от 0,2 до 0,4; количество короткоцепочечных разветвлений (SCB) на 1000 всех атомов углерода полимера при Mz, которое больше, чем при Mn; и следующие фракции полимера в испытании ATREF: от 0,1 до 8 мас.% полимера, элюированного при температуре ниже 40°С; более 45 мас.% полимера, элюированного при температуре между 40 и 76°С; менее 36 мас.% полимера, элюированного при температуре между 76 и 86°С; и от 1 до 26 мас.% полимера, элюированного при температуре выше 86°С. Технический результат - получены полимеры с улучшенной технологичностью, разжижением при сдвиге ...

СПОСОБ ОБРАБОТКИ ПОЛИМЕРНОЙ ЗАГОТОВКИ ДЛЯ ИСПОЛЬЗОВАНИЯ В ПРОТЕЗЕ СУСТАВА

Изобретение относится к способу обработки полимерной заготовки для применения в протезе сустава, а также к компонентам заменителя сустава, изготовленным этим способом, или к инструментам для имплантации заменителя сустава. Способ обработки полимерной заготовки для использования в протезе сустава содержит стадии: размещение полимерной заготовки во взрывной камере, закрывание взрывной камеры, введение горючей газовой смеси во взрывную камеру, поджигание горючей газовой смеси, в результате поджигания газовой смеси во взрывной камере создают температуру, которая превышает точку плавления полимера полимерной заготовки. Изобретение обеспечивает улучшение качества изготовления и, как следствие, точности подгонки полимерных компонентов для уменьшения количества полимерных частиц. 3 н. и 6 з.п. ф-лы, 7 ил.

ПРОИЗВОДСТВО ПОЛИЭТИЛЕНОВЫХ ИЗДЕЛИЙ С УЛУЧШЕННЫМИ ЖЕСТКОСТЬЮ, УДАРНОЙ ВЯЗКОСТЬЮ И ПЕРЕРАБАТЫВАЕМОСТЬЮ

Изобретение относится к этилен/альфа-олефиновым сополимерам. Полимер содержит этилен и по меньшей мере один альфа-олефин с 4-20 атомами углерода. Полимер имеет отношение индекса расплава (ОИР) больше чем приблизительно 40. Полимер также имеет значение Mw1/Mw2 по меньшей мере приблизительно 2,0, где Mw1/Mw2 представляет собой отношение средневесовой молекулярной массы (Мw) для первой половины кривой фракционирования при элюировании с повышением температуры (TREF) из кросс-фракционной хроматографии (CFC) к Mw для второй половины кривой TREF. Полимер также имеет значение Tw1-Tw2 меньше чем приблизительно -15°С, где Tw1-Tw2 представляет собой разницу средневзвешенной температуры элюирования (Tw) для первой половины кривой TREF и Tw для второй половины кривой TREF. Технический результат – получение полимера с улучшенными физическими свойствами. 9 з.п. ф-лы, 8 ил., 10 табл., 10 пр.

ВОДНАЯ КОМПОЗИЦИЯ ДЛЯ НАНЕСЕНИЙ НА ТВЕРДУЮ ПОВЕРХНОСТЬ С УВЕЛИЧЕННОЙ СТАБИЛЬНОСТЬЮ

КОНТЕЙНЕР ИЗ МУЛЬТИМОДАЛЬНОГО ПОЛИЭТИЛЕНА

СПОСОБ ПОЛУЧЕНИЯ ПОЛИОЛЕФИНОВ

ПОЛИМЕР И СПОСОБ ЕГО ПОЛУЧЕНИЯ, РЕЗИНОВАЯ СМЕСЬ, СОДЕРЖАЩАЯ ПОЛИМЕР, И ШИНА, СОДЕРЖАЩАЯ РЕЗИНОВУЮ СМЕСЬ

Изобретение относится к полимеру, представляющему собой синтезированный полиизопрен, способу его получения, резиновой смеси, содержащей такой полимер, и шине, содержащей вышеуказанную резиновую смесь. Полимер по изобретению имеет среднечисленную молекулярную массу (Mn) 1,5 миллиона или больше согласно данным метода гель-проникающей хроматографии (ГПХ). Технический результат - получение полимера, способного давать сшитую резиновую смесь с улучшенной износоустойчивостью, то есть устойчивостью к разрыву и истиранию. 5 н. и 5 з.п. ф-лы, 3 табл., 5 пр.

Способ получения реакторного порошка сверхвысокомолекулярного полиэтилена

МЕТОДЫ ПОВЫШЕНИЯ ЦВЕТОСТОЙКОСТИ ПОЛИЭТИЛЕНОВЫХ СМОЛ

Haftklebemasse, diese enthaltende Selbstklebeprodukte und Verbunde

Die Erfindung betrifft eine Blockcopolymerhaltige Haftklebemasse enthaltend e) 52 Gew.-% bis 65 Gew.-%, bevorzugt 55 Gew.-% bis 62 Gew.-% einer Elastomerkomponente, f) 30 Gew.-% bis 45 Gew.-%, bevorzugt 35 Gew.-% bis 42 Gew.-% zumindest eines Klebharzes, g) 0 Gew.-% bis 15 Gew.-%, bevorzugt bis 10 Gew.-% zumindest eines Weichharze und h) 0 Gew.-% bis 18 Gew.-%, bevorzugt bis 10 Gew.-% an weiteren Additiven, wobei die Elastomerkomponente (a) zu mindestens 90 Gew.-% aus Polyvinylaromat-Polybutadien-Blockcopolymeren besteht, wobei die Polyvinylaromat-Polybutadien-Blockcopolymeren zumindest eine Sorte eines Diblockcopolymers (a1) und zumindest eine Sorte eines Tri- oder Multiblockcopolymers (a2) umfassen, das zumindest eine Diblockcopolymer (a1) einen Vinylaromatenanteil von 15 Gew.-% bis 45 Gew.-% aufweist, innerhalb der Elastomerkomponente (a) der Anteil an Tri- oder Multiblockcopolymer (a2) zwischen 25 Gew.-% und 50 Gew.-%, bevorzugt zwischen 30 Gew.-% und 45 Gew.-% beträgt, das Tri- oder ...

PROCEDURE FOR THE POLYMERIZATION OF OLEFINEN IN PRESENCE OF A OLEFINPOLYMERISATIONSKATALYSATORS

Multimodal polyethylene thin film

The present invention relates to a reactor system for a multimodal polyethylene polymerization process, comprising; (a) a first reactor; (b) a hydrogen removal unit arranged between the first reactor and a second reactor comprising at least one vessel connected with a depressurization equipment, preferably selected from vacuum pump, compressor, blower, ejector or a combination, thereof, the depressurization equipment allowing to adjust an operating pressure to a pressure in a range of 100 - 200 kPa (abs); (c) the second reactor; and. (d) a third reactor and the use of a film thereof.

Method for improving the melt strength of an oriented Polyvinyl Chloride composition

Provided are methods for improving the melt strength of oriented thermoplastic polymer compositions comprising a polyvinyl chloride formulation, comprising adding an acrylic copolymer to the oriented thermoplastic polymer composition, wherein the acrylic copolymer comprises polymerized units derived from (i) 50 to 95 weight % of methyl methacrylate monomers, and (ii) 5 to 50 weight % of C ...

PRODUCING POLYOLEFIN PRODUCTS

Catalyst systems and methods for making and using the same. A method of polymerizing olefins to produce a polyolefin polymer with a multimodal composition distribution, includes 5 contacting ethylene and a comonomer with a catalyst system. The catalyst system includes a first catalyst compound and a second catalyst compound that are co-supported to form a commonly supported catalyst system. The first catalyst compound includes a compound with the general formula (C5HaRIb)(C 5HcR2 d)HfX 2 . The second catalyst compound comprises the following formula: SiR3 2 R4\ Zr X R - SiR 10 4 (A) wherein each R3 or R4 is independently H, a hydrocarbyl group, a substituted hydrocarbyl group, or a heteroatom group, wherein each R3 or R4 may be the same or different, and each X is independently a leaving group selected from a labile hydrocarbyl, a substituted hydrocarbyl, a heteroatom group, or a divalent radical that links to an R group.

Method of producing polyethylene and polyethylene thereof

A system and method of producing polyethylene, including: polymerizing ethylene in presence of a catalyst system in a reactor to form polyethylene, wherein the catalyst system includes a first catalyst and a second catalyst; and adjusting reactor conditions and an amount of the second catalyst fed to the reactor to control melt index (MI), density, and melt flow ratio (MFR) of the polyethylene.

Producing polyolefin products

Catalyst systems and methods for making and using the same are described. A method includes selecting a catalyst blend using a blend polydispersity index (bPDI) map. The polydispersity map is generated by generating a number of polymers for at least two catalysts. Each polymer is generated at a different hydrogen to ethylene ratio. At least one catalyst generates a higher molecular weight polymer and another catalyst generates a lower molecular weight polymer. A molecular weight for each polymer is measured. The relationship between the molecular weight of the polymers generated by each of the catalysts and the ratio of hydrogen to ethylene is determined. A family of bPDI curves for polymers that would be made using a number of ratios of a blend of the at least two catalysts for each of a number of ratios of hydrogen to ethylene. A ratio for the catalyst blend of the catalysts that generates a polymer having a bPDI that matches a polymer fabrication process is selected, and the product ...

Producing polyolefin products

Catalyst systems and methods for making and using the same. A method of polymerizing olefins to produce a polyolefin polymer with a multimodal composition distribution, includes contacting ethylene and a comonomer with a catalyst system. The catalyst system includes a first catalyst compound and a second catalyst compound that are co-supported to form a commonly supported catalyst system. The first catalyst compound includes a compound with the general formula (C ...

High density rotomolding resin

The present invention provides high density polyethylene resins having good low temperature impact resistance. The resins are suitable for use in rotomolding application for large parts. The resin is a bi- or trimodal resin produced using solution phase polymerization in the presence of a single site catalyst.

AQUEOUS COMPOSITION FOR HARD SURFACE APPLICATIONS WITH ENHANCED STABILITY

The present invention relates to an aqueous composition with enhanced stability for hard surface applications containing at least one lipophilic compound and at least one copolymer, in which the at least one copolymer is a comb-type branched copolymer exhibiting an alternating sequence of monomenc units (a) having at least one hydrophilic group and monomelic units (b) having at least one lipophilic side chain. Moreover, a method for producing said composition as well as the use of the composition is concerned.

BIOMIMETIC SYNTHETIC RUBBER AND METHODS FOR CONTROLLING ITS PHYSICAL PROPERTIES THROUGH BACKBONE DOUBLE BOND STEREOCHEMISTRY

In various embodiments, the present invention provides a strong, synthetic elastomer materials (and related methods for making same) with mechanical properties that are controlled by the stereochemically-defined double bonds within their backbone, yet have physical properties that are derived from monomer selection and defined, modifiable, chain end groups. The use of the organocatalyzed, stereospecific addition of thiols to activated alkynes, affords isolated high molar mass materials (>100 kDa) via step-growth polymerization with high levels of cis- or trans- double bond content. Furthermore, in various aspects of the present invention, it has been found that changing the monomer composition and chain end groups provides additional control over the materials' physical properties to provide more efficient compounding with polar additives. Using this approach to elastomer synthesis, further end group modification and toughening through various vulcanization strategies are also possible.

CATALYST SYSTEMS AND POLYMERIZATION PROCESSES

A method of polymerizing olefins with catalyst systems, such as, for exam ple, a multimodal catalyst system, wherein the catalyst system is stored at a controlled temperature to minimize loss of catalyst system productivity. ...

METHOD OF PRODUCING POLYETHYLENE AND POLYETHYLENE THEREOF

A system and method of producing polyethylene, including: polymerizing ethylene in presence of a catalyst system in a reactor to form polyethylene, wherein the catalyst system includes a first catalyst and a second catalyst; and adjusting reactor conditions and an amount of the second catalyst fed to the reactor to control melt index (MI), density, and melt flow ratio (MFR) of the polyethylene.

PRODUCING POLYOLEFIN PRODUCTS

Catalyst systems and methods for making and using the same are described. A method includes selecting a catalyst blend using a blend polydispersity index (bPDI) map. The polydispersity map is generated by generating a number of polymers for at least two catalysts. Each polymer is generated at a different hydrogen to ethylene ratio. At least one catalyst generates a higher molecular weight polymer and another catalyst generates a lower molecular weight polymer. A molecular weight for each polymer is measured. The relationship between the molecular weight of the polymers generated by each of the catalysts and the ratio of hydrogen to ethylene is determined. A family of bPDI curves for polymers that would be made using a number of ratios of a blend of the at least two catalysts for each of a number of ratios of hydrogen to ethylene. A ratio for the catalyst blend of the catalysts that generates a polymer having a bPDI that matches a polymer fabrication process is selected, and the product ...

METHOD OF PRODUCING SVERKhVYSOKO MOLECULAR POLYETHYLENE

POLYETHYLENE COMPOSITION AND PIPE, CONTAINING IN ITS COMPOSITION SUCH COMPOSITION

폴리올레핀 미다공막, 비수 전해액계 이차 전지용 세퍼레이터, 폴리올레핀 미다공막 권회체, 비수 전해액계 이차 전지 및 폴리올레핀 미다공막의 제조 방법

... 본 발명은 돌자 강도와 투기 저항도가 우수하고, 또한 권회체로 했을 때, 주름, 어긋나게 감김이 없는 우수한 외관을 갖는 폴리올레핀 미다공막, 그 권회체 및 폴리올레핀 미다공막의 제조 방법을 제공하는 것을 목적으로 한다. 16 ㎛ 환산의 돌자 강도가 400 gf 이상이며, 16 ㎛ 환산의 투기 저항도가 100 내지 400 sec/100 cc이며, 막의 표리를 포개었을 때의 정마찰계수가 0.5 내지 1.0인 것을 특징으로 하는 폴리올레핀제 미다공막.

촉매 조성물 및 초고분자량 폴리(알파-올레핀) 드래그 감소제의 제조 방법

... 초고분자량(UHMW) C4-C30 α-올레핀 드래그 감소제(DRA)의 제조 방법. 이 방법은 반응기에서 제1 α-올레핀 단량체를 촉매 및 탄화수소 용매의 존재 하에 중합하여 DRA를 제조하는 단계를 포함한다. 촉매는, 본질적으로 화학식 R1R2N-아릴을 갖는 적어도 하나의 삼차 모노페닐 아민으로서, 식 중 R1 및 R2는 동일하거나 상이하며, 각각 수소, 알킬, 또는 사이클로알킬기이고, R1 및 R2 중 적어도 하나는 적어도 하나의 탄소 원자를 함유하는 삼차 모노페닐 아민; 화학식 TiXm을 갖는 적어도 하나의 할로겐화티탄으로서, 식 중 m은 2.5 내지 4.0이고 X는 할로겐 함유 모이어티인 할로겐화티탄; 및 화학식 AlRnY3-n을 갖는 적어도 하나의 조촉매로서, 식 중 R은 탄화수소 라디칼이고, Y는 할로겐 또는 수소이고, n은 1~20인 조촉매로 이루어진다. 또한, 촉매에는 담체 또는 지지체가 없다.

CATALYST FOR OLEFIN POLYMERIZATION, METHOD FOR PRODUCING OLEFIN POLYMER, METHOD FOR PRODUCING PROPYLENE COPOLYMER, PROPYLENE POLYMER, PROPYLENE POLYMER COMPOSITION, AND USE OF THOSE

A catalyst for olefin polymerization, comprising: (A-1) a bridged metallocene compound represented by the following Formula [1-1], and (b) at least one compounded selected from: (b-1) an organoaluminum oxy compound, (b-2) a compound which forms an ion pair, and (b-3) an organoaluminum compound: wherein in Formula [1-1), R1, R2, R3, R4, R5, R8, R9, and R12 are each selected from a hydrogen, a hydrocarbon group and a silicon-containing group; the four groups of R6, R7, R10, and R11 are not hydrogen atoms, and are each selected from a hydrocarbon group or a silicon-containing group; R13 and R14 are each a hydrocarbon group or the like, excluding a hydrogen atom and a methyl group; M is Ti, Zr or the like; Y is carbon or the like; Q is a halogen or the like; and j is an integer from 1 to 4. (no suitable figure) ...

Thermoplastic polyolefin compositions

This invention relates to a thermoplastic polyolefin composition with (a) a polypropylene having a melting point of greater than 130° C. and a melt flow rate from 10 to 80 g/10 min; (b) an ethylene-propylene copolymer with 40 wt % to 80 wt % ethylene derived units and a Mooney Viscosity (1+4, 125° C.) of greater than 20 Mooney units, a Mw/Mn of from 1.8 to 4.0, and a weight average molecular weight of 50,000 to 300,000 g/mole; and (c) a propylene-based elastomer having 5 wt % to 25 wt % ethylene derived units and having a melting point of less than 110° C. and a Mw/Mn from 2.0 to 4.0; wherein the room temperature notch impact of the thermoplastic polyolefin composition is at least four times greater than the room temperature notch impact of a composition without the propylene-based elastomer.

СПОСОБ ПОЛУЧЕНИЯ ПОЛИМЕРОВ, СНИЖАЮЩИХ СОПРОТИВЛЕНИЕ ТЕЧЕНИЮ, И ИХ ПРИМЕНЕНИЕ

Изобретение относится к способу получения сверхвысокомолекулярных полиальфаолефинов. Смесь катализатора Циглера-Натта на носителе без внутреннего донора и сокатализатора контактирует с альфа-олефиновым мономером с получением полимеризационной смеси. Полимеризационную смесь выдерживают при температуре -14 в течение 24 ч, затем при температуре 25°C в течение 14 дн для достижения конверсии более 90%. Мономер альфа-олефинов выбирают из группы, включающей 1-октен, 1-децен, 1-гексен, 1-додецен. Полимеризацию проводят в массе в инертных и бескислородных условиях. Технический результат – получение полиальфаолефинов сверхвысокой молекулярной массы, которые позволяют увеличивать пропускную способность в трубопроводах за счет снижения сопротивления трению в турбулентном потоке. 2 н. и 11 з.п. ф-лы, 3 табл., 4 пр.

Способ получения реакторного порошка сверхвысокомолекулярного полиэтилена со специальной морфологией и наноструктурой, пригодного к переработке по прямой безрастворной твердофазной технологии

Настоящее изобретение относится к способу получения реакторного порошка сверхвысокомолекулярного полиэтилена со специальной морфологией и наноструктурой, пригодного к переработке по прямой безрастворной твердофазной технологии. Способ заключается в полимеризации этилена в ароматическом растворителе с использованием катализатора - постметаллоценового галоидного комплекса титана (IV) и комбинированного металлоорганического активатора, состоящего из смеси алюминий- и магнийорганических соединений. Подача этилена в реактор осуществляется с помощью барботера, нижний край которого опущен на 2/3 высоты реактора, в качестве перемешивающего устройства используется типовая мешалка - якорная, скорость перемешивания составляет 200-250 об/мин. Представленный способ приводит к упрощению и повышению технологичности способа получения реакторного порошка сверхвысокомолекулярного полиэтилена со специальной морфологией и наноструктурой, пригодного к переработке по прямой безрастворной твердофазной технологии ...

ПОЛУЧЕНИЕ ПОЛИОЛЕФИНОВЫХ ПРОДУКТОВ

Описаны каталитические системы и способы их получения. Способ включает выбор каталитической смеси с помощью карты комбинированного коэффициента полидисперсности (bPDI). Карту полидисперсности строят посредством получения множества полимеров для по меньшей мере двух катализаторов. Каждый полимер получают с разными соотношениями водорода к этилену. По меньшей мере один катализатор обеспечивает получение более высокомолекулярного полимера, а другой катализатор обеспечивает получение более низкомолекулярного полимера. Измеряют молекулярную массу каждого полимера. Определяют зависимость между молекулярной массой полимеров, полученных на каждом из катализаторов, и соотношением водорода к этилену. Строят группу кривых bPDI для полимеров, которые будут получены с применением множества соотношений смеси по меньшей мере двух катализаторов для каждого из множества соотношений водорода к этилену. Выбирают соотношение для каталитической смеси катализаторов, которое обеспечивает получение полимера с ...

СПОСОБ ПОЛУЧЕНИЯ ПОЛИОЛЕФИНОВ

Изобретение относится к способам получения полиолефинов и контролирования характеристик получаемых полиолефинов. Один или более конкретных вариантов реализации указанных способов в общем случае включают введение олефинового мономера, выбранного из С-Солефинов, в первую реакционную зону в первых условиях полимеризации с получением первого полиолефина; удаление потока промежуточного продукта из указанной первой реакционной зоны, где указанный поток промежуточного продукта включает первый полиолефин и непрореагировавший олефиновый мономер; введение указанного потока промежуточного продукта, сомономера, выбранного из С-Солефинов, и дополнительного олефинового мономера во вторую реакционную зону во вторых условиях полимеризации с получением продукта второго реактора; поддержание, по существу, постоянного отношения сомономер:олефиновый мономер во второй реакционной зоне; и удаление по меньшей мере части указанного продукта второго реактора, где указанный продукт второго реактора содержит бимодальный ...

ПОКРЫВАЮЩИЙ АГЕНТ, ПОКРЫВАЮЩАЯ ПЛЕНКА, ЛАМИНАТ И ИЗДЕЛИЕ С ЗАЩИЩЕННОЙ ПОВЕРХНОСТЬЮ

СПОСОБЫ ПОЛИМЕРИЗАЦИИ ДЛЯ ВЫСОКОМОЛЕКУЛЯРНЫХ ПОЛИОЛЕФИНОВ

ПОЛИМЕРНАЯ КОМПОЗИЦИЯ, ПРЕДНАЗНАЧЕННАЯ ДЛЯ ИЗГОТОВЛЕНИЯ КРЫШЕК И КОЛПАЧКОВ

КОМПОЗИЦИЯ СОПОЛИМЕРА ЭТИЛЕНА/АЛЬФА-ОЛЕФИНА И ИЗДЕЛИЯ, СОДЕРЖАЩИЕ УКАЗАННУЮ КОМПОЗИЦИЮ

OLEFINPOLYMERISATIONSKATALYSATORSYSTEM, PROCEDURE FOR THIS POLYMERIZATION AND SO PRESERVATION OF POLYMERS

Compositions containing low molecular weight propylene-based polymers

The present disclosure provides a composition comprising: A) a propylene/C4-C10 alpha-olefin interpolymer; (i)) a total unsaturation per mole of propylene from 0.010% to 0.030%, (ii) a density from 0.855 g/cc to 0.890 g/cc, and (iii) a melt viscosity, at 177C, from 500 cP to 200,000 cP.

ETHYLENE-BASED POLYMER COMPOSITIONS, METHODS OF MAKING THE SAME, AND ARTICLES PREPARED FROM THE SAME

... ²The invention provides a composition comprising a blend, which comprises a ²high ²molecular weight ethylene-based polymer, and a low molecular weight ethylene-²based ²polymer, and wherein the high molecular weight ethylene-based polymer has a ²density less ²than, or equal to, 0.955 g/cm3, and wherein the blend has a high load melt ²index (I2i) greater ²than, or equal to, 15 g/10 min, and wherein the blend has a molecular weight ²distribution ²(Mw/Mn) greater than, or equal to, 15. The invention also provides a ²composition comprising ²a blend, which comprises a high molecular weight ethylene-based polymer and a ²low ²molecular weight ethylene-based polymer, and wherein the high molecular weight ²ethylene-based ²polymer component has a density less than, or equal to, 0.945 g/cm3, and a ²melt index ²(I2) less than, or equal to, 0.1 g/10 min, and wherein the blend has a high ²load melt index (I2i) ²less than, or equal to, 15 g/10 min, and a melt index (I5) less than, or equal ²to 1 g/10 min ...

MACROMOLECULAR CONJUGATES FOR VISUALIZATION AND SEPARATION OF PROTEINS AND CELLS

Macromolecular conjugates for visualization and separation of proteins and cells The present invention descripbes macromolecular water-soluble conjugates based on synthetic copolymers to which at least one affinity tag, at least one imaging probe and at least one targeting ligand are bound via covalent bonds. The macromolecular conjugate may be used in identification, visualization, quantification or isolation of proteins and/or cells both in vitro and in vivo. HPMA copolymer, i.e.poly(HPMA-co-Ma-ß-Ala-TT), copolymer prepared by conventional solution radical polymerization or controlled radical copolymerization (e.g. RAFT copolymerization, reversible addition-fragmentation chain-transfer) of N-(2- hydroxypropyl)methacrylamide (HPMA) and 3-(3-methakrylamidopropanoyl)thiazolidine-2-thione (Ma-P-Ala-TT) can be preferably used as the basic copolymer.

PROCESS FOR PREPARING HIGH-REACTIVITY ISOBUTENE HOMO- OR COPOLYMERS

The present invention relates to a process for preparing high- reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per polyisobutene chain end of at least 70 mol%, which comprises polymerizing isobutene or an isobutene-comprising monomer mixture in the presence of an aluminum trihalide-donor complex effective as a polymerization catalyst or an alkylaluminum halide-donor complex effective as a polymerization catalyst, wherein the aluminum trihalide or alkylaluminum halide is treated with at least one inorganic hydrate.

CONTROL OF AGING IN MULTIMODAL CATALYST SYSTEMS

A method of polymerizing olefins with catalyst systems, such as, for example, a multimodal catalyst system, wherein the catalyst system is stored at a controlled temperature to minimize loss of catalyst system productivity.

ETHYLENE-BASED POLYMER COMPOSITIONS, METHODS OF MAKING THE SAME, AND ARTICLES PREPARED FROM THE SAME

The invention provides a composition comprising a blend, which comprises a high molecular weight ethylene-based polymer, and a low molecular weight ethylene- based polymer, and wherein the high molecular weight ethylene-based polymer has a density less than, or equal to, 0.955 g/cm3, and wherein the blend has a high load melt index (I2i) greater than, or equal to, 15 g/10 min, and wherein the blend has a molecular weight distribution (Mw/Mn) greater than, or equal to, 15. The invention also provides a composition comprising a blend, which comprises a high molecular weight ethylene-based polymer and a low molecular weight ethylene-based polymer, and wherein the high molecular weight ethylene-based polymer component has a density less than, or equal to, 0.945 g/cm3, and a melt index (I2) less than, or equal to, 0.1 g/10 min, and wherein the blend has a high load melt index (I2i) less than, or equal to, 15 g/10 min, and a melt index (I5) less than, or equal to 1 g/10 min, and a molecular weight ...

PROCESS FOR FORMING POLYOLEFINS

Processes of forming polyolefins are described herein. One or more specific embodiments of the processes generally include introducing olefin monomer selected from C2-C3 olefins into a first reaction zone under first polymerization conditions to form a first polyolefin; withdrawing a transfer effluent from the first reaction zone, the transfer effluent including first polyolefin and unreacted olefin monomer; introducing the transfer effluent, a comonomer selected from C4-C8 olefins, and additional olefin monomer to a second reaction zone under second polymerization conditions to form a second reactor product; maintaining an essentially constant comonomer:olefin monomer ratio in the second reaction zone; and withdrawing at least a portion of the second reactor product, wherein the second reactor product includes a bimodal polyolefin.

Producing polyolefin products

Welding polyolefin plastic and other plastic method

열전도 배향 초고분자량폴리에틸렌(UHMWPE)생성물의 제조공정과 이로부터 수득되는 생성물들

... 본 발명은 높은 열 전도성과 높은 열 용량 배향 초고분자량폴리에틸렌(UHMWPE) 생성물의 제조 공정에 관한 것이다. 공정에는 UHMWPE를 롤러에 주입하여 프리-래미네이트를 수득하여 이것을 더 고온 처리하여 높은 열 전도성과 높은 열 용량을 갖는 배향UHMWPE생성물을 수득하는 것이 포함된다. 연신온도는 공정 전반에서 UHMWPE의 용해온도이하로 유지한다. 또한 본 발명의 공정에 의하여 제조된 높은 열 전도성과 높은 열 용량의 배향UHMWPE생성물도 제공된다. 배향 UHMWPE생성물은 70-200 W/mK범위의 축 열 전도성과 0.022-0.045W/mK범위의 횡단 배향 열 전도성과 6-25MJ/m3K범위의 열 용량으로 특징지어진다.

지글러-나타 촉매에 의해 제조되는 얽히지 않은 고분자량 또는 초고분자량의 폴리에틸렌

... 지글러-나타 촉매에 의해 제조되는 얽히지 않은(disentangled) 고분자량 또는 초고분자량의 폴리에틸렌((U)HMWPE)으로서, (ⅰ) 180℃에서 0.5%의 일정한 변형율로 10rad/s의 고정 진동수에서 적어도 3600s 동안 동적 시간 스위프로 측정하는 경우, 정규화된 탄성 계수 G'0/G'p의 비율이 0.95 미만이고, 이때 G'0는 샘플 용융 직후 t0에서 측정된 탄성 전단 계수이고 G'p는 최대 플래토 계수인 것을 특징으로 하는, 얽히지 않은 고분자량 또는 초고분자량의 폴리에틸렌이 제공된다.

Process and catalyst composition for producing selectively hydrogenated conjugated diene polymer

Conjugated diene polymer, formulation and manufacturing method thereof

The present invention provides a conjugated diene polymer, formulations, and manufacturing methods for the same. The present invention provides a conjugated diene polymer obtained by polymerizing conjugated diene monomers and vinyl aromatic monomers using an initiator by way of an anionic polymerization, the conjugated diene polymer comprising a plurality of blocks having more than six consecutive vinyl aromatic units, wherein a vinyl aromatic monomer content of the plurality of blocks having more than six consecutive vinyl aromatic units is less than 5 wt% based on a total vinyl aromatic monomer content of the conjugated diene polymer. The present invention also provides formulations for preparing the conjugated diene polymer and the manufacturing methods for the same.

OPTICAL ADHESIVE LAYER, MANUFACTURING METHOD OF OPTICAL ADHESIVE LAYER, OPTICAL FILM WITH ADHESIVE LAYER, AND IMAGE DISPLAY DEVICE

The purpose of the present invention is to provide: an optical pressure-sensitive adhesive layer which can suppress the occurrence of foaming, peeling, lifting or the like on an adherend (an optical film) under heating and humidification conditions, and which has high adhesion reliability and excellent durability at high temperatures; a pressure-sensitive adhesive layer attached optical film, having the aforementioned optical pressure-sensitive adhesive layer on at least one surface of the optical film; and further a liquid crystal display device using the aforementioned pressure-sensitive adhesive layer attached optical film. An optical pressure-sensitive adhesive layer formed from a pressure-sensitive adhesive composition containing a (meth)acrylic polymer, wherein the optical pressure-sensitive adhesive layer has a gel fraction of 70% or more and a creep value of 55 μm or more when a load of 500 g is applied to the optical pressure-sensitive adhesive layer for 1 hour under an environment ...

Process for forming polyolefins

Processes of forming polyolefins are described herein. One or more specific embodiments of the processes generally include introducing olefin monomer selected from C2-C3 olefins into a first reaction zone under first polymerization conditions to form a first polyolefin; withdrawing a transfer effluent from the first reaction zone, the transfer effluent including first polyolefin and unreacted olefin monomer; introducing the transfer effluent, a comonomer selected from C4-C8 olefins, and additional olefin monomer to a second reaction zone under second polymerization conditions to form a second reactor product; maintaining an essentially constant comonomer:olefin monomer ratio in the second reaction zone; and withdrawing at least a portion of the second reactor product, wherein the second reactor product includes a bimodal polyolefin.

Process of preparation of drag reducing polymers and usage thereof

The present invention relates to a process for preparing ultra-high molecular weight polyalphaolefin. The process consists of polymerizing alphaolefin monomers using the catalyst system consisting of supported Ziegler-Natta catalyst without internal donor in presence of co-catalyst based on alkyl aluminums. The resulting ultra-high molecular weight polyalphaolefins having intrinsic viscosity ≥10 dL/g are used as drag reducing polymers for increasing throughput in the pipelines by reducing frictional resistance in turbulent flow.

Propylene-Olefin Copolymers and Methods for Making the Same

Provided is a composition having 70 wt % to 90 wt % of a first propylene-olefin copolymer component having an ethylene content of 15 to 21 wt %; and 10 wt % to 30 wt % of a second propylene-olefin copolymer component having an ethylene content of 6 to 10 wt %; wherein the weight average molecular weight of the first component is 250,000 to 1,780,000 g/mol higher than the weight average molecular weight of the second component; wherein the reactivity ratio product of the first component is less than 0.75; wherein the reactivity ratio product of the second component is greater than or equal to 0.75.

ЭТИЛЕНОВАЯ СОПОЛИМЕРНАЯ КОМПОЗИЦИЯ

Настоящее изобретение относится к этиленовой сополимерной композиции и изделию. Данная этиленовая сополимерная композиция содержит этиленовый сополимер, включающий этиленовый мономер и С6-С10 α-олефиновый сомономер. Этиленовый сополимер характеризуется: суммарной плотностью в диапазоне 0,945-0,980 г/сми скоростью течения расплава под нагрузкой 5 кг (СТР) в диапазоне 0,10-0,50 г/10 мин. Уровень содержания С6-С10 α-олефинового сомономера равен 1-5% (масс.). Значение M/Mсоставляет не менее чем 14,0. Модуль деформационного упрочнения этиленового сополимера составляет не менее чем 53,4. Индекс gpcBR этиленового сополимера равен 0,20-0,80. Этиленовая сополимерная композиция включает этиленовую гомополимерную фракцию, имеющую низкую среднюю молекулярную массу, и этиленовую сополимерную фракцию, имеющую высокую среднюю молекулярную массу. Изделие представляет собой работающую под давлением или не работающую под давлением трубу. Технический результат – предложение этиленовых сополимерных композиций ...

Способ получения реакторного порошка сверхвысокомолекулярного полиэтилена

Изобретение относится к способу получения реакторного порошка сверхвысокомолекулярного полиэтилена РП СВМПЭ. Способ проводят путем полимеризации этилена в среде алифатического растворителя с использованием феноксииминных титан-галоидных комплексов. Катализатор полимеризации вводят в реакционную среду в сухом виде вместе с сокатализатором в условиях увеличения скорости перемешивания. Технический результат - получение полиэтилена РП СВМПЭ с улучшенной морфологией, позволяющей переработать РП в сверхвысокомодульные (свыше 130 ГПа) и сверхвысокопрочные (свыше 2 ГПа) ленты и волокна методом холодного формования без растворителей. 6 з.п. ф-лы, 12 пр., 1 табл.

СПОСОБ ВИСБРЕКИНГА

Настоящее изобретение относится к вариантам способов увеличения MFR2полиэтиленового сополимера или этиленового пластомера или эластомера, продукту, применению продукта, применению скорости вращения шнека экструдера или содержания радикального инициатора для регулирования MFR2, подвергнутого висбрекингу полиэтиленового сополимера или этиленового пластомера или эластомера. Данный способ включает экструдирование полиэтиленового сополимера с плотностью от 910 до 970 кг/м3и MFR2от 1 до 100 г/10 мин, или этиленового пластомера или эластомера с плотностью от 855 до 910 кг/м3и MFR2от 0,5 до 100 г/10 мин, в присутствии 0,1-2% масс. непероксидного радикального инициатора с получением полиэтиленового сополимера с MFR2, составляющим 200 г/10 мин или более, или этиленового пластомера или эластомера с MFR2, составляющим 200 г/10 мин или более. Непероксидный радикальный инициатор разлагается при температуре выше 200°С. Скорость вращения шнека экструдера составляет от 300 до 1400 об/мин. Продукт применяют ...

МУЛЬТИМОДАЛЬНАЯ ПОЛИЭТИЛЕНОВАЯ КОМПОЗИЦИЯ И ВКЛЮЧАЮЩАЯ ЕЕ ПЛЕНКА

Группа изобретений относится к мультимодальной полиэтиленовой композиции для формования, а также к пленке, содержащей композицию для формования. Композиция включает: (А) от 40 до 62% по массе полиэтилена с низкой молекулярной массой, причем полиэтилен с низкой молекулярной массой имеет средневзвешенную молекулярную массу (Mw) от 20000 до 90000 г/моль, и имеет значение MI2от 500 до 1000 г/10 минут согласно стандарту ASTM D 1238; (В) от 8 до 20% по массе полиэтилена со сверхвысокой молекулярной массой, имеющего средневзвешенную молекулярную массу (Mw) от более 1000000 до 5000000 г/моль; и (С) от 30 до 50% по массе полиэтилена с высокой молекулярной массой, имеющего средневзвешенную молекулярную массу (Mw) от более 150000 до 1000000 г/моль. Плотность полиэтилена со сверхвысокой молекулярной массой и полиэтилена с высокой молекулярной массой составляет величину в одном и том же диапазоне от 0,920 до 0,950 г/см3. Молекулярно-массовое распределение мультимодальной полиэтиленовой композиции составляет ...

ВЫСОКОТЕХНОЛОГИЧНЫЙ МУЛЬТИМОДАЛЬНЫЙ СВЕРХВЫСОКОМОЛЕКУЛЯРНЫЙ ПОЛИЭТИЛЕН

Изобретение относится к композиции мультимодального полиэтилена, получаемой с использованием реакторной системы. Предложена композиция мультимодального полиэтилена, получаемая способом производства композиции мультимодального полиэтилена в реакторной системе, предназначенной для способа полимеризации с получением мультимодального полиэтилена, лист, содержащий композицию мультимодального полиэтилена и применение листа. Технический результат – получение композиции мультимодального полиэтилена, характеризующейся улучшенными механическими свойствами, такими как индекс Шарпи. 3 н. и 11 з.п. ф-лы, 4 табл., 7 пр.

ПОЛУЧЕНИЕ ПОЛИОЛЕФИНОВЫХ ПРОДУКТОВ

Каталитическая композиция для полимеризации олефинов содержит первое каталитическое соединение и второе каталитическое соединение, которые имеют общую подложку, образуя систему катализатора на общей подложке, при этом первое каталитическое соединение содержит следующую формулу:(CHR)(CHR)HfX,где каждый Rи Rнезависимо представляет собой Н или алкильную группу; а и с ≥3; a+b=c+d=5; по меньшей мере один Rи по меньшей мере один Rпредставляет собой алкильную группу; и каждый X независимо представляет собой алкильную группу; и второе каталитическое соединение содержит следующую формулу:где каждый Rпредставляет собой H, где каждый Rпредставляет собой алкильную группу; и каждый X представляет собой С-С-алкильную группу; и либо первое каталитическое соединение, либо второе каталитическое соединение наносят на общую подложку в виде раствора балансировочного катализатора. Технический результат - обеспечение альтернативного или дополнительного катализатора для получения сополимеров полиэтилена, имеющих ...

ПОЛУЧЕНИЕ ПОЛИОЛЕФИНОВЫХ ПРОДУКТОВ

Предложен способ метилирования каталитической композиции с, по существу, нормализацией энантиомерного распределения. Способ получения каталитической композиции включает: суспендирование металлоценового соединения в диметоксиэтане (DME); добавление раствора RMgBr в DME, где R представляет собой метальную группу или бензильную группу, и где RMgBr составляет более 2,3 эквивалентов относительно металлоценового соединения; перемешивание в течение по меньшей мере четырех часов с получением алкилированного металлоценового соединения; и выделение алкилированного металлоценового соединения, где алкилированное соединение имеет соотношение мезо/рац энантиомеров от 0,9 до 1,2. Указанные условия обеспечивают процедуру алкилирования, которая приводит к получению по существу равномерного состава с точки зрения стереохимии. 4 з.п. ф-лы, 4 ил., 12 табл.

МУЛЬТИМОДАЛЬНАЯ ПОЛИЭТИЛЕНОВАЯ ПЛЕНКА

СПОСОБ ПРИГОТОВЛЕНИЯ КАТАЛИЗАТОРА И ПРОЦЕСС ПОЛИМЕРИЗАЦИИ ЭТИЛЕНА С ИСПОЛЬЗОВАНИЕМ ЭТОГО КАТАЛИЗАТОРА

Изобретение относится к способу получения нанесенного титанмагниевого катализатора для синтеза сверхвысокомолекулярного полиэтилена методом суспензионной полимеризации этилена в углеводородном растворителе. Описан способ получения катализатора, содержащего соединение титана на магнийсодержащем носителе, который получают взаимодействием раствора магнийорганического соединения состава: Mg(C6 H5)2·nMgCl2·mR2O, где: n=0.37-0.7, m=2, R2О - простой эфир с R=i-Am, n-Bu, с соединением кремния, в качестве соединения кремния используют продукт, полученный взаимодействием соединения состава R'kSiCl4-k с тетраэтоксидом кремния Si(OEt)4, где: R1 = метил или фенил; k=0-1, при мольном соотношении R1xSiCl4-x/Si(OEt)4=6-40; и процесс полимеризации этилена в присутствии катализатора, приготовленного описанным выше способом, в сочетании с сокатализатором. Технический результат - катализатор позволяет получать сверхвысокомолекулярный полиэтилен с высокой насыпной плотностью (≥0.39 г/см3). 2 н. и 2 з.п. ф-лы ...

ПОЛУЧЕНИЕ ПОЛИОЛЕФИНОВЫХ ПРОДУКТОВ

ПОЛУЧЕНИЕ ПОЛИОЛЕФИНОВЫХ ПРОДУКТОВ

ПОЛИБУТАДИЕНОВЫЕ ПОЛИМЕРЫ И СОДЕРЖАЩИЕ ИХ КАУЧУКОВЫЕ КОМПОЗИЦИИ ДЛЯ ПРИМЕНЕНИЙ ПРИ НИЗКИХ ТЕМПЕРАТУРАХ

Изобретение относится к полибутадиеновым полимерам и каучуковым композициям. Получают 1,4-полибутадиеновый полимер, имеющий содержание цис-связей от 85 до около 92 %, содержание виниловых связей от около 1 до около 5% и содержание транс-связей от около 3 до около 12 %, при этом полимер имеет энтальпию плавления ΔНот около 5 до около 25 Дж/г°С при измерении дифференциальной сканирующей калориметрии ДСК. Изобретение позволяет улучшить стойкость при низких температурах при сохранении прочности и износостойкости каучуковых композиций. 3 н. и 12 з.п. ф-лы, 2 ил., 4 табл.

СПОСОБ ПОЛИМЕРИЗАЦИИ

Изобретение относится к газофазному способу полимеризации для получения полиолефинов. Описан способ, включающий взаимодействие мономеров, каталитической системы и инертного конденсирующегося реагента при условиях проведения полимеризации с получением полиолефина. Инертный конденсирующий реагент включает по меньшей мере 25 мол. % изобутана и по меньшей мере 25 мол. % пропана. Технический результат – увеличение производительности и снижение ΔТНП (температура начала плавления) при относительно низком давлении в реакторе. 18 з.п. ф-лы, 4 табл., 16 пр.

Producing polyolefin products

Catalyst systems and methods for making and using the same are described. A method includes selecting a catalyst blend using a blend polydispersity index (bPDI) map. The polydispersity map is generated by generating a number of polymers for at least two catalysts. Each polymer is generated at a different hydrogen to ethylene ratio. At least one catalyst generates a higher molecular weight polymer and another catalyst generates a lower molecular weight polymer. A molecular weight for each polymer is measured. The relationship between the molecular weight of the polymers generated by each of the catalysts and the ratio of hydrogen to ethylene is determined. A family of bPDI curves for polymers that would be made using a number of ratios of a blend of the at least two catalysts for each of a number of ratios of hydrogen to ethylene. A ratio for the catalyst blend of the catalysts that generates a polymer having a bPDI that matches a polymer fabrication process is selected, and the product ...

High performances multimodal ultra high molecular weight polyethylene

The present inventions relates to a multimodal polyethylene composition comprising; (A) 30 to 65 parts by weight, preferably 30 to 50 parts by weight, most preferred 30 to 40 parts by weight of the low molecular weight polyethylene having a weight average molecular weight (Mw) of 20,000 to 90,000 g/mol or medium molecular weight polyethylene having a weight average molecular weight (Mw) of more than 90,000 to 150,000 g/mol; (B) 5 to 40 parts by weight, preferably 10 to 35 parts by weight, most preferred 15 to 35 parts by weight, of the first high molecular weight polyethylene having a weight average molecular weight (Mw) of more than 150,000 to 1,000,000 g/mol or the first ultra high molecular weight polyethylene having a weight average molecular weight (Mw) of more than 1,000,000 to 5,000,000 g/mol; and (C) 10 to 60 parts by weight, preferably 15 to 60 parts by weight, most preferred 20 to 60 parts by weight of the second high molecular weight polyethylene having a weight average molecular ...

Ethylene copolymer composition

The pipe articles with excellent stress crack resistance can be achieved by providing ethylene copolymer composition comprises ethylene and a C6-C10 α -olefin comonomer; the ethylene copolymer having a total density of 0.945-0.980 g/cm ...

Multimodal polyethylene film

The present invention relates to a multimodal polyethylene composition comprising: (A) 40 to 65 parts by weight, preferably 43 to 52 parts by weight, most preferred 44 to 50 parts by' weight, of the low molecular weight polyethylene having a weight average molecular weight (Mw) of 20,000 to 90,000 g/mol, wherein the low molecular weight polyethylene has a MI2 of 500 to 1,000 g/10 min according to ASTM D 1238; (B) 5 to 17 parts by weight, preferably 10 to 17 parts by weight, most preferred 10 to 15 parts by weight, of the first high molecular weight polyethylene having a weight average molecular weight (Mw) of more than 150,000 to 1,000,000g/mol or the first ultra high molecular weight polyethylene having a weight average molecular weight (Mw) of more than 1,000,000 to 5,000,000g/mol; and (C) 30 to 50 parts by weight, preferably 37 to 47 party by weight, most preferably 39 to 45 parts by weight, of the second high molecular weight polyethylene having a weight average molecular weight (Mw ...

PRODUCING POLYOLEFIN PRODUCTS

Catalyst systems and methods for making and using the same. A method of polymerizing olefins to produce a polyolefin polymer with a multimodal composition distribution, includes contacting ethylene and a comonomer with a catalyst system. The catalyst system includes a first catalyst compound and a second catalyst compound that are co-supported to form a commonly supported catalyst system. The first catalyst compound includes a compound with the general formula (C5HaR1 b)(C5HcR2 d)HfX2. The second catalyst compound comprises the following formula: (A), wherein each R3 or R4 is independently H, a hydrocarbyl group, a substituted hydrocarbyl group, or a heteroatom group, wherein each R3 or R4 may be the same or different, and each X is independently a leaving group selected from a labile hydrocarbyl, a substituted hydrocarbyl, a heteroatom group, or a divalent radical that links to an R3 group.

POLYMER COMPOSITION FOR CAPS AND CLOSURES

A polyethylene composition suitable for making into caps and closures is described, which has a density of 950 - 960 kg/m3, a SHI(1/100) of 4 - 12,, a melt index MI2 between 0.2 and 2 g/10 min, and a relationship between spiral flow 'SF' (measured in mm at 250°C/1000 bar/100mm/s) and ESCR ?' (measured in hours) of E > 200 - SF, or alternatively has a density of 950-960 kg/m3, a SHI(1/100) of 4- 12,, a melt index MI2 between 0.2 and 2 g/10 min, and a relationship between spiral flow 'SF', ESCR ?' and melt index '??2' (measured in g/10min according to ISO 1133 at 190°C at load of 2. 16 kg) of E > (9800 - 36SF - 1000MI2)/ 60.

SEALANT

A sealant containing a block copolymer that contains a polymer block (a) comprising a structural unit derived from an aromatic vinyl compound and a polymer block (b) that contains 1-100 mass% of a structural block (b1) derived from farnesene and 99-0 mass% of a structural block (b2) derived from a conjugated diene other than farnesene, the block copolymer having a mass ratio [(a)/(b)] of polymer block (a) and polymer block (b) of 5/95-45/55, has excellent moldability, flexibility, and adhesiveness as well as excellent sound insulation and damping (vibration damping characteristics) in the high-frequency range near 4000 Hz even at high temperature.

Modified conjugated diene-based polymer and method for producing same

High Molecular Weight Multimodal Elastomer Compositions with Good Processability

Provided herein are multimodal elastomer compositions comprising a first polymer fraction and a second polymer fraction, and methods for making such compositions. The elastomer compositions are preferably ethylene, α-olefin, copolymers or ethylene, α-olefin, polyene terpolymers. The elastomer compositions have high Mooney viscosity, thereby providing for improved elastomeric properties in compounds and other articles formed from the elastomer compositions. Surprisingly, the high Mooney viscosity compositions exhibit a much lower than expected viscosity when formulated into elastomer compounds. Thus, the processing detriments typically associated with high Mooney viscosity elastomers are minimized through the use of the elastomer compositions, and methods for making them, disclosed herein.

MULTIMODAL POLYETHYLENE SCREW CAP

The present invention relates to a reactor system for a multimodal polyethylene composition comprising; (a) first reactor (b) hydrogen removal unit arranged between the first reactor and a second reactor comprising at least one vessel connected with a depressurization equipment, preferably selected from vacuum pump, compressor, blower, ejector or a combination thereof, the depressurization equipment allowing to adjust an operating pressure to a pressure in a range of 100-200 kPa (abs); (c) the second reactor; and (d) a third reactor, a multimodal, polyethylene composition obtainable this way and a screw cap comprising the same.

Bis-phosphaguanidine and poly-phosphaguanidine ligands with group IV metal catalysts produced therefrom

Embodiments are directed to bis- and poly-phosphaguanidine compounds, and the metal-ligand complexes formed therefrom, wherein the metal complexes can be used as procatalysts in polyolefin polymerization. Formulas (I) (II) and (III).

НАВИНЧИВАЮЩИЙСЯ КОЛПАЧОК ИЗ МУЛЬТИМОДАЛЬНОГО ПОЛИЭТИЛЕНА

Настоящее изобретение относится к композиции мультимодального полиэтилена для производства навинчивающегося колпачка. Композиция мультимодального полиэтилена содержит от 35 до 65 массовых процентов низкомолекулярного полиэтилена, от 5 до 40 массовых процентов первого высокомолекулярного полиэтилена или первого сверхвысокомолекулярного полиэтилена и от 20 до 60 массовых процентов второго высокомолекулярного полиэтилена или второго сверхвысокомолекулярного полиэтилена, где молекулярно-массовое распределение композиции мультимодального полиэтилена находится в диапазоне от 10 до 25 согласно определению при использовании гельпроникающей хроматографии, полупериод изотермической кристаллизации композиции мультимодального полиэтилена при температуре 123°С составляет 7 мин и менее в соответствии с дифференциальной сканирующей калориметрией и длина текучести в спиральной пресс-форме при температуре 220°С составляет по меньшей мере 200 мм. Техническим результатом является улучшение перерабатываемости ...

METHODS FOR DYEING ULTRA-HIGH MOLECULAR WEIGHT POLYETHYLENE AND DYED ARTICLES MADE BY THE SAME

Dyed articles, such as sutures, and methods for making the same by treating with a supercritical liquid are disclosed. The articles may be made at least partially, if not entirely, from ultra-high molecular weight polyethylene (UHMWPE). The dye may be D&C Violet #2. 1. A method of dyeing an article comprising an ultra-high molecular weight polyethylene (UHMWPE) , comprising contacting the article with a supercritical liquid and D&C Violet #2.2. The method of claim 1 , further comprising applying a pressure from about 3 claim 1 ,600 psi to about 3 claim 1 ,800 psi.3. The method of claim 1 , further comprising applying a temperature from about 110° C. to about 130° C.4. The method of claim 3 , wherein the temperature is maintained for about 90 to about 180 minutes.5. The method of claim 4 , wherein the dyed article has a color contrast of at least about 90%.6. The method of claim 1 , wherein the article is a suture.7. A dyed article made by the process of . This application claims the benefit of U.S. Provisional Application No. 62/275,268, filed on Jan. 6, 2016, the entire contents of which are incorporated by reference herein in entirety.The invention relates to a process for dyeing an article comprising an ultra-high weight polyethylene, with D&C Violet #2. A supercritical liquid is applied to the article with the dye at a specified temperature and pressure to yield the desired dyed article.In a process known in the art, highly oriented ultra-high molecular weight polyethylene fibers are contacted with a dye bath at a temperature of 100-130° C. for 20-60 minutes, with the dye bath consisting of an aqueous dispersion of a finely ground mixture of specific dyes and surfactants whereupon the moulded article is washed and dried. For good dyeing results the fibers are preferably modified by means of a plasma or corona treatment prior to the dyeing operation. An important drawback of the known process is that the dyed fibers, particularly if they are not first modified by ...

PHOTOACTIVATABLE FOULING-RESISTANT COPOLYMERS

A photoactivatable fouling-resistant copolymer composed of a photoactivatable monomer and a hydrophilic monomer is disclosed. The photoactivatable monomer includes an aryl ketone derivative having one or more polar groups or alkyl groups. 156-. (canceled)57. A photoactivatable fouling-resistant copolymer comprising:(a) a photoactivatable monomer including an aryl ketone derivative having one or more polar groups or alkyl groups, and(b) a hydrophilic monomer.59. The copolymer of claim 57 , wherein the photoactivatable monomer is present in an amount of 0.1 to 70% by weight based on the total weight of the copolymer.60. The copolymer of claim 57 , wherein the hydrophilic monomer is present in an amount of 30 to 99.9% by weight based on the total weight of the copolymer.61. The copolymer of claim 57 , wherein the photoactivatable monomer comprises the one or more polar groups or alkyl groups.62. The copolymer of claim 57 , wherein the polar group of the photoactivatable monomer comprises at least one of carboxylic acid claim 57 , a sulfonate group claim 57 , a nitro group claim 57 , a hydroxyl claim 57 , carboxy claim 57 , amino claim 57 , amide claim 57 , phosphate or ether group.63. The copolymer of claim 57 , wherein the alkyl group of the photoactivatable monomer or the hydrophilic monomer comprises at least one of a methyl claim 57 , ethyl claim 57 , or propyl group.64. The copolymer of claim 57 , wherein the copolymer has a weight average molecular weight ranging from 5 claim 57 ,000 to 200 claim 57 ,000.65. The copolymer of claim 57 , wherein the photoactivatable monomer comprises at least one unsaturated group.66. The copolymer of claim 57 , wherein the hydrophilic monomer comprises at least one unsaturated group.67. The copolymer of claim 65 , wherein the unsaturated group is a methacrylate claim 65 , acrylate claim 65 , acrylamide claim 65 , vinyl group or mixtures thereof.69. The copolymer of claim 57 , wherein the hydrophilic monomer is a sulfobetaine ...

Resin composition and application thereof

A resin composition and an application thereof are provided, wherein the resin composition includes a thermoplastic elastomer, a styrene-based resin, a processing oil, and a filler. Based on 100 wt % of the resin composition, the content of the thermoplastic elastomer is 20 wt % to 55 wt %, the content of the styrene-based resin is 25 wt % to 55 wt %, the content of the processing oil is 6 wt % to 18 wt %, and the content of the filler is 5 wt % to 20 wt %. A printing material made by the resin composition has good adhesion with a substrate.

Polymer Compositions With PBSA Plasticizer

A polymeric composition is disclosed which includes from about 40 to about 99 weight percent of a first polymer and from about 1 to about 60 weight percent of polybutylene(succinate-co-adipate) (“PBSA”). Preferably the first polymer is selected from the group consisting of polyvinyl chloride, polylactic acid, polyhydroxy alkanoates, and mixtures thereof. A method for making the composition is also disclosed. 1. A polymeric composition comprising:from about 40 to about 99 weight percent of a first polymer which comprises polyhydroxy alkanoates; andfrom about 1 to about 60 weight percent of polybutylene(succinate-co-adipate) (“PBSA”).2. (canceled)3. The polymeric composition of claim 1 , wherein the PBSA has a weight average molecular weight from about 50 claim 1 ,000 to about 200 claim 1 ,000.4. The polymeric composition of claim 1 , wherein the PBSA has a weight average molecular weight from about 80 claim 1 ,000 to about 120 claim 1 ,000.5. The polymeric composition of claim 1 , wherein the PBSA has a viscosity from about 15 claim 1 ,000 to about 40 claim 1 ,000 centipoise at a temperature of about 215° C.6. The polymeric composition of claim 1 , wherein the PBSA has a melting point from about 20° C. to about 75° C.7. The polymeric composition of claim 1 , wherein the PBSA has a melting point from about 25° C. to about 40° C.8. The polymeric composition of claim 1 , wherein the PBSA comprises:from about 40 to about 60 mole percent moieties derived from 1,4-butanediol,from about 10 to about 50 mole percent moieties derived from succinic acid, andfrom about 10 to about 50 mole percent moieties derived from adipic acid.9. The polymeric composition of claim 1 , wherein the composition comprises from about 1 to about 10 weight percent of the PBSA.10. The polymeric composition of claim 1 , wherein the composition comprises from about 50 to about 60 weight percent of the PBSA.11. The polymeric composition of claim 1 , wherein the composition further comprises at least one ...

POLYOLEFIN FOR PREPARING FIBER AND FIBER COMPRISING THE SAME (As Amended)

The present invention relates to polyolefin powder for preparing fiber, and fiber comprising the same. According to the present invention, provided is polyolefin, which exhibits a high molecular weight range and narrow molecular weight distribution and in which the formation of a gel deteriorating the quality of fiber is reduced. Therefore, by using the polyolefin, the present invention exhibits molecular weight, density and narrow molecular weight distribution, which are equivalent to those of conventional polyolefin, but the number of gels having a large particle diameter is remarkably reduced, and therefore, the present invention can provide fiber having excellent tenacity and tensile strength half-life. 1. Polyolefin powder for preparing fiber:wherein a weight average molecular weight is 100,000 to 300,000 g/mol;wherein a molecular weight distribution is 2.0 to 3.2; and{'sup': '2', 'when the polyolefin powder is manufactured into a casting film at 190° C., the number of gels with a particle diameter of 250 μl or more is less than 2,000 per unit area (m).'}2. The polyolefin powder according to claim 1 , wherein a melt index (MI:190° C. claim 1 , 2.16 kg) is 0.1 to 2.0 g/10 min.3. The polyolefin powder according to claim 1 , wherein a density is 0.945 to 0.955 g/cm.4. The polyolefin powder according to claim 1 , wherein the polyolefin powder is prepared by the polymerization of olefin monomers in the presence of a single metallocene supported catalyst.5. A fiber comprising the polyolefin powder of .6. The fiber according to claim 5 , wherein a tenacity measured according to ASTM D 638 is 13 to 20 gf/denier.7. The fiber according to claim 5 , wherein a tensile strength half-life measured for UV by AATCC method #16 claim 5 , after measuring tensile strength according to ASTM D 638 claim 5 , is 250 to 350 hours.8. The fiber according to claim 5 , wherein the fiber is used as monofilament or multifilament products. This application claims the benefit of Korean Patent ...

LOW DENSITY POLYETHYLENE COPOLYMER HAVING EXCELLENT FILM PROCESSABILITY AND TRANSPARENCY

The low density polyethylene copolymer according to the present invention is characterized in that as LCB (Long Chain Branch) is introduced into LLDPE, the melt strength is remarkably high even without blending with LDPE, and thus it can be advantageously applied to blown film processing and the like. 1. A low density polyethylene copolymer which satisfies the following conditions:a melt index (MI) of 0.5 to 1.5 g/10 min as measured according to ASTM D1238 (2.16 kg, 190° C.),{'sup': '3', 'a density 0.910 to 0.930 g/cmas measured according to ASTM D792,'}a weight average molecular weight of 91,000 to 150,000, anda melt strength (MS) of 40 to 100 mN.2. The low density polyethylene copolymer according to claim 1 ,{'sub': 0', '500, 'wherein the low density polyethylene copolymer has η(zero shear viscosity) of 140,000 P (poise) or more, and η(viscosity measured at 500 rad/s) of 7,000 P (Poise) or less.'}3. The low density polyethylene copolymer according to claim 1 ,wherein the low density polyethylene copolymer has Mz (Z-average molecular weight) of 220,000 to 380,000.5. The low density polyethylene copolymer according to claim 4 , which satisfying the following Mathematical Formula 2:{'br': None, 'sup': 5', '2.8', '0.25', '5', '2.8', '0.25, 'sub': M', 'M, '(1.6×(Mz/10)+26×(α)) Подробнее

Process for Forming Polyolefins

Processes of forming polyolefins are described herein. One or more specific embodiments of the processes generally include introducing olefin monomer selected from C 2 -C 3 olefins into a first reaction zone under first polymerization conditions to form a first polyolefin; withdrawing a transfer effluent from the first reaction zone, the transfer effluent including first polyolefin and unreacted olefin monomer; introducing the transfer effluent, a comonomer selected from C 4 -C 8 olefins, and additional olefin monomer to a second reaction zone under second polymerization conditions to form a second reactor product; maintaining an essentially constant comonomer:olefin monomer ratio in the second reaction zone; and withdrawing at least a portion of the second reactor product, wherein the second reactor product includes a bimodal polyolefin.

POLYMERIC PIEZOELECTRIC FILM AND MANUFACTURING METHOD THEREOF

A polymeric piezoelectric film, including a helical chiral polymer (A) having a weight average molecular weight of from 50,000 to 1,000,000 and optical activity, in which, in the film: a crystallinity given by a DSC method is from 20% to 80%; a standardized molecular orientation MORc is from 3.5 to 15.0 when a reference thickness measured by a microwave transmission-type molecular orientation meter is 50 μm; and when a direction parallel to a phase difference streak is a direction X, a direction perpendicular to the direction X and parallel to a main plane of a film is a direction Y, and the phase difference streak is evaluated by an evaluation method A, per a length of 1,000 mm in the direction Y, a number of phase difference streaks with an evaluation value of 60 or more is 0, and a sum of the evaluation values of phase difference streaks with an evaluation value of 20 or more is 1000 or less. 1. A polymeric piezoelectric film , comprising a helical chiral polymer (A) having a weight average molecular weight of from 50 ,000 to 1 ,000 ,000 and optical activity , wherein , in the film:a crystallinity given by a DSC method is from 20% to 80%;a standardized molecular orientation MORc is from 3.5 to 15.0 when a reference thickness measured by a microwave transmission-type molecular orientation meter is 50 μm; andwhen a direction parallel to a phase difference streak is a direction X, a direction perpendicular to the direction X and parallel to a main plane of a film is a direction Y, and the phase difference streak is evaluated by an evaluation method A, per a length of 1,000 mm in the direction Y, a number of phase difference streaks with an evaluation value of 60 or more is 0, and a sum of evaluation values of phase difference streaks with an evaluation value of 20 or more is 1000 or less, (a) with respect to the direction Y, acquiring in-plane phase difference data of a film at intervals of 0.143 mm to obtain an in-plane phase difference profile;', '(b) performing ...

COPOLYMERS AND USES THEREOF

The invention relates to a specific copolymer obtainable by co-polymerizing at least the following monomers: —more than 80 wt % of at least one bicyclic (meth)acrylate ester, —0.05 to 15% w/w styrene, and—optionally other ethylenically unsaturated monomers, as well as to the way to synthesize them and the use of such polymers to modify the rheology of a liquid in which they are soluble. 1. A copolymer comprising:83-99.95 wt % of the bicyclic (meth)acrylate esters (a),0.05 to 12 wt % of styrene (b), and0 to 19 wt % of ethylenically unsaturated monomers that are not monomer (a) or (b),up to a total of 100 wt %, wherein the weight percentages of the monomer are based on the total weight of all the monomers.3. A copolymer according to claim 1 , wherein the copolymer is a random co-polymer.6. A copolymer according to claim 1 , comprising a total of bicyclic (meth)acrylate ester and styrene in an amount of 90 wt % of the total monomer claim 1 , or more.7. A copolymer according of claim 6 , comprising a total of bicyclic (meth)acrylate ester and styrene in an amount of 95 wt % or more.8. A copolymer according to claim 7 , wherein the copolymer is produced from isobornyl methacrylate and styrene.9. A copolymer according to claim 1 , having a cloud point in fuel of 12.5° C. or lower.10. A copolymer according to claim 1 , having an average weight average molecular weight of from 100 claim 1 ,000 to 50 claim 1 ,000 claim 1 ,000 D.11. Additive package for fuels comprising a copolymer of .12. Method for the preparation of a copolymer of comprising the step of radically polymerizing the specified monomers.13. Method for the preparation of an additives package for fuel claim 1 , comprising the step of making a solution comprising a copolymer of and one or more other fuel additives.14. Use of a polymer or additive package according to claim 1 , for modifying the rheology of a fluid claim 1 , by dissolving said polymer into said fluid claim 1 , whereby said fluid is not a fuel for ...

AN ETHYLENE/ALPHA-OLEFIN COPOLYMER COMPOSITION, AND ARTICLES COMPRISING THE SAME

An ethylene/alpha-olefin copolymer composition having a density from 0.935 to 0.955 g/cc; a ratio of weight average molecular weight to number average molecular weight, Mw/Mn, of from 3 to 10; a z-average molecular weight, Mz, from 200 kg/mol to 500 kg/mol; and a PENT value of greater than 500 hours at 80° C. and 2.4 MPa; wherein when the composition is formed into a monolayer pipe the pipe has a pipe hydrostatic strength of greater than 100 hours at 20° C. and 12.0 MPa. Also provided is a pipe or pipe fitting comprising the ethylene/alpha-olefin copolymer composition. 1. A pipe fabricated from an ethylene/alpha-olefin copolymer composition having:a) a density from 0.935 to 0.955 g/cc;b) a ratio of weight average molecular weight to number average molecular weight, Mw/Mn, of from 3 to 10;c) a z-average molecular weight, Mz, of from 200 kg/mol to 500 kg/mol; andd) a PENT value determined according to ASTM F1473-13 of greater than 500 hours at 80° C. and 2.4 MPa;wherein the pipe has a pipe hydrostatic strength, determined according to ISO 1167, of greater than 100 hours at 20° C. and 12.0 MPa as specified in EN 12201-2.2. The pipe of claim 1 , wherein the pipe further exhibits a pipe hydrostatic strength claim 1 , determined according to ISO 1167 claim 1 , of at least 1 claim 1 ,000 hours at 95° C. and 3.6 MPa as specified in ISO 22391-2.3. The pipe of claim 1 , wherein the composition further exhibits a zero shear viscosity ratio claim 1 , ZSVR claim 1 , of from 1.5 to 20.4. The pipe of claim 1 , wherein the composition further exhibits a dynamic viscosity claim 1 , η* claim 1 , at 100 rad/sec and 190° C. of less than 2 claim 1 ,000 Pa-s.5. The pipe of claim 1 , wherein the composition further exhibits a dynamic viscosity claim 1 , η* claim 1 , at 0.1 rad/sec and 190° C. from 10 claim 1 ,000 to 70 claim 1 ,000 Pa-s.6. The pipe of claim 1 , wherein the composition has a density from 0.940 to 0.952 g/cc.7. The pipe of claim 1 , wherein the composition has a ratio of ...

RESIN COMPOSITION AND MOLDED ARTICLE

A resin composition includes a cellulose ester compound and a styrene-acrylonitrile resin having a weight average molecular weight of 50,000 or greater and 200,000 or less. 1. A resin composition comprising:a cellulose ester compound; anda styrene-acrylonitrile resin having a weight average molecular weight of 50,000 or greater to 200,000 or less.2. The resin composition according to claim 1 ,wherein a ratio of a total mass of the styrene-acrylonitrile resin with respect to a total of a total mass of the cellulose ester compound and the total mass of the styrene-acrylonitrile resin is 0.05 or greater to 0.35 or less.3. The resin composition according to claim 1 ,wherein a ratio of a total mass of the styrene-acrylonitrile resin with respect to a total of a total mass of the cellulose ester compound and the total mass of the styrene-acrylonitrile resin is 0.10 or greater to 0.30 or less.4. The resin composition according to claim 1 ,wherein the cellulose ester compound includes at least one selected from the group consisting of cellulose acetate propionate and cellulose acetate butyrate.5. The resin composition according to claim 1 , further comprising:a thermoplastic elastomer having a constituent unit derived from a (meth)acrylic acid ester compound.6. The resin composition according to claim 5 ,wherein the thermoplastic elastomer has a core-shell structure having a core part and a shell layer.7. The resin composition according to claim 5 ,wherein the thermoplastic elastomer includes a constituent unit derived from an olefin compound.8. The resin composition according to claim 7 ,wherein the constituent unit derived from an olefin compound is a constituent unit derived from at least one compound selected from the group consisting of ethylene, α-olefin, and butadiene.9. The resin composition according to claim 5 ,wherein a ratio of a total mass of the thermoplastic elastomer with respect to a total of a total mass of the cellulose ester compound and a total mass of ...

THERMOPLASTIC COMPOSITIONS CONTAINING ACRYLIC COPOLYMERS AS MELT STRENGTH AND CLARITY PROCESS AIDS

Provided are thermoplastic polymer composition comprising (a) a polyvinyl halide, and (b) an acrylic copolymer comprising 70 to 100 weight % of a first polymeric stage, based on the total weight of the acrylic copolymer, comprising polymerized units derived from at least 85 weight % of one or more C-Calkyl methacrylate monomers and C-Calkyl acrylate monomers, based on the total weight of monomers in the first polymeric stage, wherein the first polymeric stage has a calculated Tof 70° C. or less, and wherein the acrylic copolymer has a molecular weight of greater than 1.5×10g/mol. 1. A thermoplastic polymer composition comprising:(a) a polyvinyl halide; and{'sub': 1', '6', '1', '3', 'g, 'sup': '6', '(b) an acrylic copolymer comprising 70 to 100 weight % of a first polymeric stage, based on the total weight of the acrylic copolymer, comprising polymerized units derived from at least 85 weight % of one or more C-Calkyl methacrylate monomers and C-Calkyl acrylate monomers, based on the total weight of monomers in the first polymeric stage, wherein the first polymeric stage has a calculated Tof 70° C. or less, and wherein the acrylic copolymer has a molecular weight of 1.5×10g/mol or more.'}2. The thermoplastic polymer composition of claim 1 , wherein the first polymeric stage comprises (i) 35 to 75 weight % of methyl methacrylate monomers claim 1 , and (ii) 25 to 65 weight % of one or more C-Calkyl methacrylate monomers and C-Calkyl acrylate monomers claim 1 , based on the total weight of monomers in the first polymeric stage.3. The thermoplastic polymer composition of claim 2 , wherein the C-Calkyl methacrylate monomers and C-Calkyl acrylate monomers of the first polymeric stage comprise one or more of butyl methacrylate and ethyl acrylate.4. The thermoplastic polymer composition of claim 1 , wherein the acrylic copolymer further comprises a second polymeric stage comprising polymerized units derived from one or more C-Calkyl (meth)acrylate monomers.5. The ...

METHOD OF PREPARING ABS-BASED GRAFT COPOLYMER HAVING IMPROVED IMPACT STRENGTH AND METHOD OF MANUFACTURING ABS-BASED INJECTION-MOLDED ARTICLE INCLUDING THE SAME

The present invention relates to a method of preparing an ABS-based graft copolymer having improved impact strength and an ABS-based injection-molded article including the same. More particularly, the present invention provides an ABS-based copolymer resin having improved impact strength by optimizing structures of large-diameter diene-based rubber latex particles and a matrix structure between ABS-based copolymer particles and a SAN resin through introduction of a multimeric acid of an unsaturated fatty acid or a metal salt thereof as an emulsifier in a large-diameter diene-based rubber latex polymerization step and an ABS graft polymerization step. 1. A method of preparing an ABS-based graft copolymer having improved impact strength , the method comprising:a) a step of polymerizing 100 parts by weight of a conjugated diene-based monomer, 0.5 to 5 parts by weight of an emulsifier, and 0.01 to 6 parts by weight of a water-soluble polymerization initiator; b) a step of adding 0.01 to 5 parts by weight of an emulsifier thereto when a polymerization conversion rate is 60 to 85%, after step a); c) a step of terminating polymerization when a polymerization conversion rate is 90 to 99% to obtain a large-diameter diene-based rubber latex; and d) a step of graft-polymerizing 100 parts by weight of a monomer mixture comprising 40 to 70% by weight (based on solids) of the large-diameter diene-based rubber latex, 15 to 35% by weight of an aromatic vinyl monomer, and 5 to 25% by weight of a vinyl cyan monomer with 0.01 to 3 parts by weight of an emulsifier, 0.01 to 3 parts by weight of an initiator, and 0.001 to 1 part by weight of an oxidation-reduction catalyst,wherein the emulsifiers of steps a) and d) are a multimeric acid of an unsaturated fatty acid or a metal salt thereof.2. The method according to claim 1 , wherein the unsaturated fatty acid is a straight-chain claim 1 , branched-chain claim 1 , or cyclic unsaturated fatty acid having 8 to 22 carbon atoms.3. The method ...

POLYMER AND POSITIVE RESIST COMPOSITION

Provided are a polymer that can be favorably used as a positive resist having a low film reduction rate in a state of low irradiation with ionizing radiation or the like and a positive resist composition that can favorably form a high-resolution pattern. The polymer includes an α-methylstyrene unit and a methyl α-chloroacrylate unit, and the proportion of components having a molecular weight of less than 6,000 in the polymer is no greater than 0.5%. The positive resist composition contains the aforementioned polymer and a solvent. 1. A polymer comprising an α-methylstyrene unit and a methyl α-chloroacrylate unit , whereina proportion of components having a molecular weight of less than 6,000 is no greater than 0.5%.2. The polymer according to claim 1 , whereina proportion of components having a molecular weight of less than 10,000 is no greater than 0.5%.3. The polymer according to claim 1 , whereina proportion of components having a molecular weight of greater than 80,000 is at least 15%.4. The polymer according to claim 1 , having a weight average molecular weight (Mw) of at least 55 claim 1 ,000.5. A positive resist composition comprising the polymer according to and a solvent. The present disclosure relates to a polymer and a positive resist composition, and in particular relates to a polymer that is suitable for use as a positive resist and a positive resist composition that contains this polymer.Polymers that display increased solubility in a developer after undergoing main chain scission through irradiation with ionizing radiation, such as an electron beam, or short-wavelength light, such as ultraviolet light, are conventionally used as main chain scission-type positive resists in fields such as semiconductor production. (Hereinafter, the term “ionizing radiation or the like” is used to refer collectively to ionizing radiation and short-wavelength light.)PTL 1 discloses one example of a main chain scission-type positive resist having high sensitivity. The ...

POLYMER AND POSITIVE RESIST COMPOSITION

Provided are a polymer that can be favorably used as a positive resist having a low film reduction rate under low irradiation, a high y value, and high sensitivity, and a positive resist composition that can efficiently form a high-resolution pattern. The polymer includes an a-methylstyrene unit and a methyl α-chloroacrylate unit, and has a molecular weight distribution (Mw/Mn) of less than 1.48. In the polymer, the proportion of components having a molecular weight of less than 6,000 is no greater than 0.5% and the proportion of components having a molecular weight of greater than 80,000 is no greater than 6.0%. The positive resist composition contains the aforementioned polymer and a solvent. 1. A polymer comprising an α-methylstyrene unit and a methyl α-chloroacrylate unit , whereinthe polymer has a molecular weight distribution (Mw/Mn) of less than 1.48,a proportion of components having a molecular weight of less than 6,000 is no greater than 0.5%, anda proportion of components having a molecular weight of greater than 80,000 is no greater than 6.0%.2. The polymer according to claim 1 , whereina proportion of components having a molecular weight of less than 10,000 is no greater than 0.8%.3. The polymer according to claim claim 1 , having a weight average molecular weight (Mw) of at least 30 claim 1 ,000.4. The polymer according to claim 1 , whereina proportion of components having a molecular weight of greater than 100,000 is at least 0.5%.5. A positive resist composition comprising the polymer according to and a solvent. The present disclosure relates to a polymer and a positive resist composition, and in particular relates to a polymer that is suitable for use as a positive resist and a positive resist composition that contains this polymer.Polymers that display increased solubility in a developer after undergoing main chain scission through irradiation with ionizing radiation, such as an electron beam, or short-wavelength light, such as ultraviolet light, ...

METHOD OF REDUCING DRAG IN A CONDUIT

A method of reducing drag in a conduit. The method includes producing ultra high molecular weight (UHMW) C-Cα-olefin drag reducing agent (DRA) and introducing the UHMW C-Cα-olefin polymer DRA into the conduit to reduce drag in the conduit. The catalyst consists essentially of at least one tertiary monophenyl amine selected from the group consisting of N,N-diethylaniline, N-ethyl-N-methylparatolylamine, N,N-dipropylaniline, N,N-diethylmesitylamine, and combinations thereof; at least one titanium halide having a formula TiX, where m is from 2.5 to 4.0 and X is a halogen containing moiety; and at least one cocatalyst having a formula AlRYwhere R is a hydrocarbon radical, Y is a halogen or hydrogen, and n is 1-20. Further, the catalyst is absent of a carrier or support. 1. A method of reducing drag in a conduit comprising:{'sub': 4', '30, 'claim-text': at least one tertiary monophenyl amine selected from the group consisting of N,N-diethylaniline, N-ethyl-N-methylparatolylamine, N,N-dipropylaniline, N,N-diethylmesitylamine, and combinations thereof;', {'sub': 'm', 'at least one titanium halide having a formula TiX, where m is from 2.5 to 4.0 and X is a halogen containing moiety; and'}, {'sub': n', '3-n, 'at least one cocatalyst having a formula AlRYwhere R is a hydrocarbon radical, Y is a halogen or hydrogen, and n is 1-3; and'}], 'producing a UHMW C-Cα-olefin copolymer DRA by polymerizing in a reactor a first α-olefin monomer in the presence of a catalyst and a hydrocarbon solvent, where the catalyst consists essentially of{'sub': 4', '30, 'introducing the UHMW C-Cα-olefin polymer DRA into the conduit to reduce drag in the conduit.'}2. The method of where the UHMW C-Cα-olefin polymer DRA has a non-crystalline structure.3. The method of where the UHMW C-Cα-olefin polymer DRA has a molecular weight distribution (MWD) of at least 3.25 claim 1 , where MWD is defined as M/Mwith Mw being a weight average molecular weight and Mbeing a number average molecular weight.4. The ...

MACROMOLECULAR CONJUGATES FOR VISUALIZATION AND SEPARATION OF PROTEINS AND CELLS

A macromolecular water-soluble conjugates based on synthetic copolymers to which at least one affinity tag, at least one imaging probe and at least one targeting ligand are bound via covalent bonds. The macromolecular conjugate may be used in identification, visualization, quantification or isolation of proteins and/or cells. 2. The method according to claim 1 , wherein the molecular weight of the conjugate is in the range of 1000 to 500000 g/mol.3. The method according to claim 1 , wherein the targeting ligand is a moiety capable of selectively binding to the target protein claim 1 , wherein the targeting ligand is selected from the group consisting of an inhibitor or substrate of the targeted enzyme claim 1 , an agonist or antagonist of the targeted receptor claim 1 , and a ligand of the target protein resin.4. The method according to claim 1 , wherein the targeting ligand may be attached to the synthetic copolymer via a linker claim 1 , a peptide claim 1 , a nucleic acid claim 1 , or an oligosaccharide.5. The method according to claim 1 , wherein the affinity tag is selected from biotin claim 1 , His-tag claim 1 , FLAG tag claim 1 , HA tag claim 1 , Strep-tag claim 1 , Avi-Tag claim 1 , GST-tag claim 1 , c-myc-tag claim 1 , V5-tag claim 1 , E-tag claim 1 , S-tag claim 1 , SBP-tag claim 1 , poly(Glu)-tag claim 1 , and calmodulin.6. The method according to claim 1 , wherein the imaging probe is selected from the group comprising fluorescent moieties claim 1 , radionuclides and metal complexes.7. The method according to claim 6 , wherein the imaging probe is selected from the group consisting of fluorophores with an excitation maximum in the range of 350 to 850 nm claim 6 , lanthanide complexes claim 6 , and radionuclide complexes Cu claim 6 , Ga claim 6 , F claim 6 , Tc claim 6 , I claim 6 , I claim 6 , I claim 6 , Co claim 6 , Ga claim 6 , Cu claim 6 , In claim 6 , Y.8. The method according to wherein the method of identification claim 1 , visualization claim 1 , ...

Pressure-Sensitive Adhesive, and Self-Adhesive Products and Composites Comprising the Latter

The invention relates to a block copolymer-containing pressure-sensitive adhesive comprising e) 52% by weight to 65% by weight, preferably 55% by weight to 62% by weight, of an elastomer component, f) 30% by weight to 45% by weight, preferably 35% by weight to 42% by weight, of at least one bonding resin, g) 0% by weight to 15% by weight, preferably to 10% by weight, of at least one softening resin and h) 0% by weight to 18% by weight, preferably to 10% by weight, of further additives, where the elastomer component (a) consists to an extent of at least 90% by weight of polyvinylaromatic-polybutadiene block copolymers, where the polyvinylaromatic-polybutadiene block copolymers include at least one type of diblock copolymer (a1) and at least one type of tri- or multiblock copolymer (a2), the at least one diblock copolymer (a1) has a vinylaromatic content of 15% by weight to 45% by weight, within the elastomer component (a) the proportion of tri- or multiblock copolymer (a2) is between 25% by weight and 50% by weight, preferably between 30% by weight and 45% by weight, the tri- or multiblock copolymer (a2) has a molar mass of at least 125 000 g/mol and a vinylaromatic content of 15% to 45% by weight, and one kind of the tri- or multiblock copolymer is preferably a multi-arm (radial) block copolymer. 1. A block copolymer-containing pressure-sensitive adhesive comprising:a) 52 wt % to 65 wt %, of an elastomer component,b) 30 wt % to 45 wt %, of at least one tackifier resin,c) 0 wt % to 15 wt %, of at least one plasticizing resin, and wherein the elastomer component (a) is at least 90 wt % of polyvinylaromatic-polybutadiene block copolymers, the polyvinylaromatic-polybutadiene block copolymers comprising at least one kind of a diblock copolymer (a1) and at least one kind of a triblock or multiblock copolymer (a2),', 'the at least one diblock copolymer (a1) has a vinylaromatic fraction of 15 wt % to 45 wt %, within the elastomer component (a) the fraction of triblock or ...

CURABLE LIQUID DEVELOPER

Provided is a curable liquid developer having sufficient fixability while being a curable liquid developer containing a polymer material. The curable liquid developer includes: a cationic polymerizable liquid monomer including a vinyl ether monomer; and toner particles insoluble in the cationic polymerizable liquid monomer, in which the curable liquid developer further includes a polymerizable polyolefin including a polyolefin in a main chain thereof, the polymerizable polyolefin having a vinyl ether group at at least one terminal of the polyolefin. 1. A curable liquid developer , comprising:a cationic polymerizable liquid monomer including a vinyl ether monomer; andtoner particles insoluble in the cationic polymerizable liquid monomer, whereinthe curable liquid developer further comprises a polymerizable polyolefin comprising a polyolefin in a main chain thereof, at least one terminal of the polyolefin having a vinyl ether group.2. A curable liquid developer according to claim 1 , wherein the polymerizable polyolefin has vinyl ether groups at a plurality of terminals of the polyolefin.3. A curable liquid developer according to claim 1 , wherein the polymerizable polyolefin has a weight-average molecular weight of 900 to 10 claim 1 ,000.4. A curable liquid developer according to claim 3 , wherein the polymerizable polyolefin has a weight-average molecular weight of 1 claim 3 ,000 to 10 claim 3 ,000.5. A curable liquid developer according to claim 1 , wherein the polymerizable polyolefin has a structure derived from one of 1 claim 1 ,2-polybutadiene and 1 claim 1 ,4-polyisoprene claim 1 , and has hydrogen added to a double bond moiety except the vinyl ether group.67-. (canceled)8. A curable liquid developer according to claim 2 , wherein the polymerizable polyolefin has a weight-average molecular weight of 900 to 10 claim 2 ,000.9. A curable liquid developer according to claim 2 , wherein the polymerizable polyolefin has a weight-average molecular weight of 1 claim 2 ...

METHACRYLIC RESIN COMPOSITION AND INJECTION-MOLDED ARTICLE

A methacrylic resin composition comprising not less than 90% by mass of a methacrylic resin, wherein the methacrylic resin comprises 95 to 100% by mass of methyl methacrylate monomer units and 0 to 5% by mass of acrylate monomer units, the methacrylic resin has an Mw of 57000 to 90000, Mw representing a weight-average molecular weight, and a ratio Mw/Mn of not more than 1.9, Mn representing a number-average molecular weight, the methacrylic resin composition has an absolute value of a difference between YI4 and YI2 of not more than 3, YI4 representing a yellow index at an optical path length of 200 mm of an injection-molded article obtained at a cylinder temperature of 280° C. in a molding cycle of 4 minutes, YI2 representing a yellow index at an optical path length of 200 mm of an injection-molded article obtained at a cylinder temperature of 280° C. in a molding cycle of 2 minutes, and meets a relationship represented by Formula (B) and Formula (C): 2. An injection-molded article composed of the methacrylic resin composition according to .3. A board composed of the methacrylic resin composition according to and having a thickness of not more than 1 mm.4. A method for producing the methacrylic resin composition according to claim 1 , comprising bulk-polymerizing a monomer mixture comprising methyl methacrylate monomer and an acrylate monomer. The present invention relates to a methacrylic resin composition and an injection-molded article, and a production method thereof. More specifically, the present invention relates to a methacrylic resin composition that during heat forming, has excellent flowability and is less likely to be colored and an injection-molded article that has high heat resistance and high mechanical strength, and a production method thereof.Methacrylic resins have high transparency and are useful as the materials of molded articles used as optical members, lighting members, sign members, decoration members, and the like. There is a demand to ...

CATALYST COMPOSITION FOR MAKING ULTRA HIGH MOLECULAR WEIGHT POLY (ALPHA-OLEFIN) DRAG REDUCING AGENTS

A catalyst consisting essentially of at least one tertiary monophenyl amine having a formula RRN-aryl, where Rand Rare the same or different, and each is a hydrogen, an alkyl, or a cycloalkyl group, where at least one of Rand Rcontain at least one carbon atom; at least one titanium halide having a formula TiX, where m is from 2.5 to 4.0 and X is a halogen containing moiety; and at least one cocatalyst having a formula AlRYwhere R is a hydrocarbon radical, Y is a halogen or hydrogen, and n is 1-3. Further, the catalyst is absent of a carrier or support. 1. A catalyst consisting essentially of:{'sup': 1', '2', '1', '2', '1', '2, 'at least one tertiary monophenyl amine having the formula RRN-aryl, where Rand Rmay each be a hydrogen, an alkyl, or a cycloalkyl group with the proviso that at least one of Rand Rcontains at least one carbon atom;'}{'sub': 'm', 'at least one titanium halide having a formula TiX, where m is from 2.5 to 4.0 and X is a halogen containing moiety; and'}{'sub': n', '3-n, 'at least one cocatalyst having a formula AlRYwhere R is a hydrocarbon radical, Y is a halogen or hydrogen, and n is 1-3,'}where the catalyst is absent a carrier or support.2. The catalyst of where at least one tertiary monophenyl amine is selected from the group consisting of N claim 1 ,N-diethylaniline claim 1 , N-ethyl-N-methylparatolylamine claim 1 , N claim 1 ,N-dipropylaniline claim 1 , N claim 1 ,N-diethylmesitylamine claim 1 , and combinations thereof.3. The catalyst of where the cocatalyst is Al(CHCH)Cl.4. The catalyst of where the titanium halide is TiCl⅓AlCl.5. The catalyst of where the cocatalyst comprises one or more organoaluminum compounds selected from the group consisting of trimethyl aluminum claim 1 , triethyl aluminum claim 1 , tri-n-proyl aluminum claim 1 , tri-n-butyl aluminum claim 1 , tri-isobutyl aluminum claim 1 , tri-n-hexyl aluminum claim 1 , tri(2-methylpentyl) aluminum claim 1 , tri-n-octyl aluminum claim 1 , diethyl aluminum hydride claim 1 , ...

MACROMOLECULAR CONJUGATES FOR VISUALIZATION AND SEPARATION OF PROTEINS AND CELLS

Macromolecular water-soluble conjugates based on synthetic copolymers to which at least one affinity tag, at least one imaging probe, and at least one targeting ligand are bound via covalent bonds. The macromolecular conjugate may be used in identification, visualization, quantification or isolation of proteins and/or cells. The targeting ligand may be attached to the synthetic copolymer via a flexible linker. 1: Synthetic macromolecular conjugate for selective interaction with proteins , characterized in that it contains a copolymer to which at least one affinity tag , at least one imaging probe and at least one targeting ligand are bound via covalent bonds.3: The macromolecular conjugate according to claim 1 , characterized in that the molecular weight of the conjugate is preferably in the range of 1000 to 500000 g/mol claim 1 , preferably in the range of 20000 to 150000 g/mol.4: The macromolecular conjugate according to claim 1 , characterized in that the targeting ligand is a moiety capable of selectively binding to the targeted protein or peptide sequence claim 1 , in particular the targeting ligand is selected from the group comprising an inhibitor or substrate of the targeted enzyme claim 1 , an agonist or antagonist of the targeted receptor claim 1 , a ligand of the targeted protein resin.5: The macromolecular conjugate according to claim 1 , characterized in that the targeting ligand may be attached to the synthetic copolymer via a flexible linker claim 1 , preferably via a flexible linker based on polyethylene glycol claim 1 , peptide claim 1 , preferably a peptide having a molecular weight from 100 to 5000 g/mol claim 1 , or nucleic acid claim 1 , preferably a nucleic acids comprising 1 to 40 nucleotides claim 1 , or oligosaccharide claim 1 , preferably an oligosaccharide containing 1 to 40 monosaccharides.6: The macromolecular conjugate according to claim 1 , characterized in that the affinity tag is selected from biotin claim 1 , His-tag claim 1 , FLAG ...

PROCESS FOR FORMING POLYOLEFINS

Processes of forming polyolefins are described herein. One or more specific embodiments of the processes generally include introducing olefin monomer selected from C-Colefins into a first reaction zone under first polymerization conditions to form a first polyolefin; withdrawing a transfer effluent from the first reaction zone, the transfer effluent including first polyolefin and unreacted olefin monomer; introducing the transfer effluent, a comonomer selected from C-Colefins, and additional olefin monomer to a second reaction zone under second polymerization conditions to form a second reactor product; maintaining an essentially constant comonomer:olefin monomer ratio in the second reaction zone; and withdrawing at least a portion of the second reactor product, wherein the second reactor product includes a bimodal polyolefin. 131.-. (canceled).32. A process of forming polyolefins comprising:{'sub': 2', '3, 'introducing olefin monomer selected from C-Colefins into a first reaction zone under first polymerization conditions to form a first polyolefin;'}withdrawing a transfer effluent from the first reaction zone, the transfer effluent comprising first polyolefin and unreacted olefin monomer;{'sub': 4', '8, 'introducing the transfer effluent, a comonomer selected from C-Colefins, and additional olefin monomer to a second reaction zone under second polymerization conditions to form a second reactor product;'}maintaining an essentially constant comonomer:olefin monomer ratio in the second reaction zone; andwithdrawing at least a portion of the second reactor product, wherein the second reactor product comprises a bimodal polyolefin,wherein the first reaction zone and second reaction zone are connected in series, the first reaction zone comprises one or more loop slurry reaction vessels, and the second reaction zone comprises a gas phase reactor.331. The process of claim , further comprising introducing hydrogen or a first comonomer into the first reaction zone under the ...

CONDUCTIVE RESIN COMPOSITION AND ELECTRONIC CIRCUIT MEMBER USING THE SAME

The present invention relates to a conductive resin composition comprising, as essential components, a resin (A), a curing agent (B) reacting with the resin (A), and a conductive filler (C), wherein the resin (A) has a functional group, a functional group equivalent of 400 g/eq or more and 10,000 g/eq or less, a Tg (glass transition temperature) or a softening point of 40° C. or less, or an elastic modulus of less than 1.0 GPa at 30° C., and wherein the conductive filler (C) is made of a conductive material having a volume specific resistivity of 1×10Ω·cm or less at room temperature. 1. A conductive resin composition comprising , as essential components , a resin (A) , a curing agent (B) reacting with the resin (A) , and a conductive filler (C) , wherein the resin (A) has a functional group , a functional group equivalent of 400 g/eq or more and 10 ,000 g/eq or less , a Tg (glass transition temperature) or a softening point of 40° C. or less , or an elastic modulus of less than 1.0 GPa at 30° C. , and wherein the conductive filler (C) is made of a conductive material having a volume specific resistivity of 1×10Ω·cm or less at room temperature.2. The conductive resin composition according to claim 1 , wherein the resin (A) has a weight average molecular weight of 50 claim 1 ,000 or more.3. The conductive resin composition according to claim 1 , wherein the molecular structure of the resin (A) contains at least one selected from (meth)acrylic acid ester claim 1 , styrene claim 1 , and acrylonitrile as the component.4. The conductive resin composition according to claim 1 , wherein the conductive filler (C) has a flat shape claim 1 , and an aspect ratio of the thickness and the in-plane longitudinal direction is 10 or more.5. The conductive resin composition according to claim 1 , wherein the compounding ratio of the conductive filler (C) is from 40 to 95% by mass in terms of mass ratio to the total amount of the conductive resin composition.6. The conductive resin ...

PRODUCING POLYOLEFIN PRODUCTS

Catalyst systems and methods for making and using the same. A method of polymerizing olefins to produce a polyolefin polymer with a multimodal composition distribution, includes contacting ethylene and a comonomer with a catalyst system. The catalyst system includes a first catalyst compound and a second catalyst compound that are co-supported to form a commonly supported catalyst system. The first catalyst compound includes a compound with the general formula (CHR)(CHR)HfX. The second catalyst compound includes at least one of the following general formulas: 147-. (canceled)49. The method of claim 48 , comprising adding a solution comprising a catalyst to a slurry comprising another catalyst.50. The method of claim 48 , comprising forming a product from the polyolefin polymer.51. The method of claim 48 , comprising:measuring a sample of the polyolefin polymer to obtain an initial product property; andchanging a process parameter to obtain a second product property, based, at least in part, on the initial product property.52. The method of claim 51 , wherein measuring a sample of the polyolefin polymer comprises at least one of:(i) measuring comonomer incorporation as a function of a molecular weight;(ii) determining a physical property of a plastic sample;(iii) determining a flow index, a melt index, a ratio of two melt indices, a density, a molecular weight distribution, a comonomer content.53. The method of claim 51 , wherein changing a process parameter comprises at least one of:(i) adjusting the molar amount of a catalyst component that is combined with a catalyst component slurry;(ii) adjusting a reactor temperature;(iii) adjusting the ethylene partial pressure.54. The method of claim 48 , comprising adjusting a ratio of the hydrogen to ethylene within a polymerization reactor to control a composition distribution claim 48 , a molecular weight distribution claim 48 , a melt index (I) claim 48 , or a ratio of two melt indices claim 48 , or any combinations ...

Bimodal Polyethylene Resins and Pipes Produced Therefrom

Disclosed herein are ethylene-based polymers generally characterized by a density of at least 0.94 g/cm, a high load melt index from 4 to 20 g/10 min, a zero-shear viscosity at 190° C. from 20,000 to 400,000 kPa-sec, and a relaxation time at 190° C. from 225 to 3000 sec. These ethylene polymers can be produced by peroxide-treating a broad molecular weight distribution Ziegler-catalyzed resin, and can be used in large diameter, thick wall pipes and other end-use applications. 120-. (canceled)21. An ethylene polymer having:{'sup': '3', 'a density in a range from about 0.94 to about 0.955 g/cm;'}{'sub': '21', 'a HLMI (I) in a range from about 5 to about 15 g/10 min;'}a ratio of Mw/Mn in a range from about 13 to about 38;{'sub': '0', 'a zero-shear viscosity (η) at 190° C. in a range from about 25,000 to about 250,000 kPa-sec; and'}{'sub': 'η', 'a relaxation time (τ) at 190° C. in a range from about 250 to about 2500 sec.'}22. The polymer of claim 21 , wherein:the ethylene polymer comprises an ethylene/1-butene copolymer, an ethylene/1-hexene copolymer, an ethylene/1-octene copolymer, an ethylene homopolymer, or a combination thereof; andthe ethylene polymer further comprises an additive selected from an antioxidant, an acid scavenger, an antiblock additive, a slip additive, a colorant, a filler, a processing aid, a UV inhibitor, or any combination thereof.23. An article of manufacture comprising the polymer of .24. The polymer of claim 22 , wherein:{'sup': '3', 'the density is in a range from about 0.942 to about 0.952 g/cm;'}{'sub': '0', 'the zero-shear viscosity (η) at 190° C. is in a range from about 30,000 to about 215,000 kPa-sec; and'}{'sub': 'η', 'the relaxation time (τ) at 190° C. is in a range from about 300 to about 2000 sec.'}25. The polymer of claim 22 , wherein the ratio of Mw/Mn is in a range from about 16 to about 37.26. The polymer of claim 25 , wherein the ethylene polymer has a Mn in a range from about 10 claim 25 ,200 to about 16 claim 25 ,100 g/mol. ...

Multimodal polyethylene screw cap

The present invention relates to a multimodal polyethylene composition comprising: (A)35 to 65 parts by weight, preferably 45 to 65 parts by weight, most preferred 50 to 60 parts by weight, of the low molecular weight polyethylene having a weight average molecular weight (Mw) of 20,000 to 90,000 g/mol; (B) 5 to 40 parts by weight, preferably 5 to 30 parts by weight, most preferred 5 to 20 parts by weight, of the first high molecular weight polyethylene having a weight average molecular weight (Mw) of more than 150,000 to 1,000,000g/mol or the first ultra high molecular weight polyethylene having a weight average molecular weight (Mw) of more than 1,000,000 to 5,000,000g/mol; and (C) 20 to 60 parts by weight, preferably 25 to 60 parts by weight, most preferred 35 to 55 parts by weight, of the second high molecular weight polyethylene having a weight average molecular weight (Mw) of more than 150,000 to 1,000,000g/mol or the second ultra high molecular weight polyethylene having a weight average molecular weight (Mw) of more than 1,000,000 to 5,000,000g/mol, wherein the molecular weight distribution of the multimodal polyethylene composition is from 10 to 25, preferably 10 to 20, determined by Gel Permeation Chromatography; the isothermal crystallization half-time of the multimodal polyethylene composition at a temperature of 123° C. is 7 min or less, preferably 6 min or less, preferably 2- 6 min, according to Differential Scanning Calorimetry; and a spiral flow length at a temperature of 220° C. is at least 200 mm, preferably 250-400 mm and a screw cap comprising the same.

Supported Catalyst Systems and Processes for Use Thereof

This invention relates to a supported catalyst system and process for use thereof. In particular, the catalyst system includes a pyridyldiamido transition metal complex, an activator and a support material. The catalyst system may be used for preparing ultrahigh molecular weight polyolefins. 4. The supported catalyst system of claim 1 , wherein the metal represented by M comprises Ti claim 1 , Zr claim 1 , or Hf.5. The supported catalyst system of claim 1 , wherein the groups represented by R claim 1 , Rto R claim 1 , or Rto Rcontain 2 to 20 carbon atoms.6. The supported catalyst system of claim 1 , wherein the group represented by E is carbon claim 1 , and Rand Rare independently selected from phenyl groups that are variously substituted with between zero to five substituents that include F claim 1 , Cl claim 1 , Br claim 1 , I claim 1 , CF claim 1 , NO claim 1 , alkoxy claim 1 , dialkylamino claim 1 , hydrocarbyl claim 1 , and substituted hydrocarbyls claim 1 , groups with from one to ten carbons.7. The supported catalyst system of claim 1 , wherein the group represented by L is selected from halide claim 1 , alkyl claim 1 , aryl claim 1 , alkoxy claim 1 , amido claim 1 , hydrido claim 1 , phenoxy claim 1 , hydroxy claim 1 , silyl claim 1 , allyl claim 1 , alkenyl claim 1 , and alkynyl; and the group represented by L′ is selected from ethers claim 1 , thio-ethers claim 1 , amines claim 1 , nitriles claim 1 , imines claim 1 , pyridines claim 1 , and phosphines.8. The supported catalyst system of claim 1 , wherein the support material has a surface area in the range of from 10 to 700 m/g and an average particle diameter in the range of from 10 to 500 μm.9. The supported catalyst system of claim 1 , wherein the support material is selected from the group consisting of silica claim 1 , alumina claim 1 , silica-alumina claim 1 , and combinations thereof.10. The supported catalyst system of claim 1 , wherein the support material is fluorided.11. The supported catalyst ...

COATING AGENT, COATING FILM, LAMINATE AND SURFACE-PROTECTED ARTICLE

Provided is a coating agent that can be formed into a surface layer having excellent self-restoring properties and stain-proof properties by applying the coating agent onto a surface of a base material (for example, thermoplastic polyurethane) and curing the resulting material. The coating agent according to the present application contains urethane (meth)acrylate-based resin (a), fluorine-based compound (b) and photopolymerization initiator (d). Urethane (meth)acrylate-based resin (a) has weight average molecular weight (Mw) of 10,000 to 800,000. Fluorine-based compound (b) has at least two polymerizable functional groups. The surface layer formed of the coating agent has excellent self-restoring properties of a scratch, stain-proof properties and stretchability. 1. A coating agent , comprising urethane (meth)acrylate-based resin (a) , fluorine-based compound (b) and photopolymerization initiator (d) ,wherein the urethane (meth)acrylate-based resin (a) has weight average molecular weight of 10,000 to 800,000, andthe fluorine-based compound (b) has at least two polymerizable functional groups.2. The coating agent according to claim 1 , wherein the fluorine-based compound (b) is perfluoropolyether having a (meth)acryloyl group.3. The coating agent according to claim 1 , wherein the coating agent contains 1 to 9% by weight of the fluorine-based compound (b) based on a total amount of the urethane (meth)acrylate-based resin (a) and the fluorine-based compound (b).4. The coating agent according to claim 1 , further comprising fluorosilsesquioxane derivative (c) claim 1 ,wherein the fluorosilsesquioxane derivative (c) has at least one polymerizable functional group.5. The coating agent according to claim 4 , wherein the fluorosilsesquioxane derivative (c) is cage structure fluorosilsesquioxane.6. The coating agent according to claim 4 , wherein the coating agent contains 0.1 to 10% by weight of the fluorosilsesquioxane derivative (c) based on a total amount of the ...

SOLID ELECTROLYTE COMPOSITION, ELECTRODE SHEET FOR ALL-SOLID STATE SECONDARY BATTERY, ALL-SOLID STATE SECONDARY BATTERY, AND METHODS FOR MANUFACTURING ELECTRODE SHEET FOR ALL-SOLID STATE SECONDARY BATTERY AND ALL-SOLID STATE SECONDARY BATTERY

Provided are a solid electrolyte composition containing at least one dendritic polymer selected from the group consisting of dendrons, dendrimers, and hyperbranched polymers and a specific inorganic solid electrolyte, in which the dendritic polymer has at least one specific functional group, an electrode sheet for an all-solid state secondary battery and an all-solid state secondary battery for which the solid electrolyte composition is used, a method for manufacturing an electrode sheet for an all-solid state secondary battery, and a method for manufacturing an all-solid state secondary battery. 2. The solid electrolyte composition according to claim 1 ,wherein the dendritic polymer has 8 to 2,500 molecular terminal portions in a molecule.3. The solid electrolyte composition according to claim 1 ,wherein a number-average molecular weight of the dendritic polymer is 500 to 500,000.4. The solid electrolyte composition according to claim 1 ,wherein an average particle diameter of the dendritic polymer is 1 nm to 100 nm.7. The solid electrolyte composition according to claim 1 , further comprising:a lithium salt.8. The solid electrolyte composition according to claim 1 ,wherein the inorganic solid electrolyte is a sulfide-based inorganic solid electrolyte.9. The solid electrolyte composition according to claim 1 , further comprising:at least one solvent selected from the group consisting of an alcohol compound solvent, an ether compound solvent, an amide compound solvent, an aromatic compound solvent, an ester compound solvent, and an aliphatic compound solvent.11. A method for manufacturing an electrode sheet for an all-solid state secondary battery claim 1 , the method comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a step of applying a wet slurry of the solid electrolyte composition according to ; and'}a step of drying the slurry.12. An all-solid state secondary battery comprising:{'claim-ref': {'@idref': 'CLM-00010', 'claim 10'}, 'the electrode sheet ...

Supported Catalyst Systems and Methods of Using Same

A catalyst system including the reaction product of a fluorided support (such as a fluorided silica support) that preferably has not been calcined at a temperature of 400° C. or more, an activator and at least a first transition metal catalyst compound; methods of making such catalyst systems, polymerization processes using such catalyst systems and polymers made therefrom. 2. The catalyst system of claim 1 , wherein the fluorided support comprises fluorided silica.3. The catalyst system of claim 2 , wherein the fluorided silica has not been calcined at a temperature of 400° C. or more.4. The catalyst system of claim 1 , wherein M is a group 4 claim 1 , 5 claim 1 , or 6 transition metal; each X is independently hydrogen claim 1 , halogen claim 1 , or a hydrocarbyl group; Rand Rare independently a Cto Chydrocarbon group; m is 0 claim 1 , −1 claim 1 , −2 claim 1 , or −3 and n is +3 claim 1 , +4 claim 1 , or +5; Rand Rare independently a hydrocarbon group having up to 20 carbon atoms or an aryl group or an aralkyl group.5. The catalyst system of claim 1 , wherein Ris absent claim 1 , hydrogen claim 1 , or methyl.7. The catalyst system of claim 6 , wherein Ris methyl claim 6 , ethyl claim 6 , propyl or butyl and/or Ris methyl claim 6 , ethyl claim 6 , propyl claim 6 , or butyl claim 6 , and/or Ris methyl claim 6 , ethyl claim 6 , propyl or butyl claim 6 , and/or Ris methyl claim 6 , ethyl claim 6 , propyl claim 6 , or butyl and/or Ris methyl claim 6 , ethyl claim 6 , propyl claim 6 , or butyl.8. The catalyst system of claim 6 , wherein R claim 6 , R claim 6 , and Rare methyl and Rand Rare hydrogen.9. The catalyst system of claim 1 , further comprising a second catalyst compound according to Formula 1.12. The catalyst system of claim 1 , wherein the activator comprises alkyl aluminum compounds claim 1 , alumoxanes claim 1 , modified alumoxanes claim 1 , non-coordinating anions claim 1 , boranes claim 1 , borates claim 1 , and/or ionizing compounds.13. The catalyst system ...

COATING AGENT, COATING FILM, LAMINATE AND SURFACE-PROTECTED ARTICLE

Provided is a coating agent that can be formed into a surface layer having excellent self-restoring properties and stain-proof properties by applying the coating agent onto a surface of a base material (for example, thermoplastic polyurethane) and curing the resulting material. The coating agent according to the present application contains urethane (meth)acrylate-based resin (a), fluorine-based compound (b) and photopolymerization initiator (d). Urethane (meth)acrylate-based resin (a) has weight average molecular weight (Mw) of 10,000 to 800,000. Fluorine-based compound (b) has at least two polymerizable functional groups. The surface layer formed of the coating agent has excellent self-restoring properties of a scratch, stain-proof properties and stretchability. 1. A coating agent , comprising urethane (meth)acrylate-based resin (a) , fluorine-based compound (b) and photopolymerization initiator (d) ,wherein the urethane (meth)acrylate-based resin (a) has weight average molecular weight of 50,000 to 500,000,the fluorine-based compound (b) has at least two polymerizable functional groups, andthe coating agent contains 1 to 9% by weight of the fluorine-based compound (b) based on a total amount of the urethane (meth)acrylate-based resin (a) and the fluorine-based compound (b).2. The coating agent according to claim 1 , wherein the fluorine-based compound (b) is perfluoropolyether having a (meth)acryloyl group.3. The coating agent according to claim 1 , further comprising fluorosilsesquioxane derivative (c) claim 1 ,wherein the fluorosilsesquioxane derivative (c) has at least one polymerizable functional group.4. The coating agent according to claim 3 , wherein the fluorosilsesquioxane derivative (c) is cage structure fluorosilsesquioxane.5. The coating agent according to claim 3 , wherein the coating agent contains 0.1 to 10% by weight of the fluorosilsesquioxane derivative (c) based on a total amount of the urethane (meth)acrylate-based resin (a) claim 3 , the ...

Dual Catalyst System for Producing LLDPE Copolymers with Improved Processability

Disclosed herein are ethylene-based polymers generally characterized by a density from 0.89 to 0.93 g/cm 3 , a ratio of Mw/Mn from 3 to 6.5, a Mz from 200,000 to 650,000 g/mol, a CY-a parameter at 190° C. from 0.2 to 0.4, and a reverse short chain branching distribution. The ATREF profile of these polymers can have a high temperature peak from 92 to 102° C., and a low temperature peak from 18 to 36° C. less than that of the high temperature peak. These polymers can have comparable physical properties to that of a metallocene-catalyzed LLDPE, but with improved processability, shear thinning, and melt strength, and can be used in blown film and other end-use applications.

ELASTOMERIC COMPOSITIONS PROVIDING IMPROVED WET GRIP

The disclosure relates to elastomeric compositions having improved soft touch feel to skin, and in particular grip, especially during wet/humid conditions. In one embodiment, the compositions are part of a composite system, wherein the compositions are connected, for example bonded, molded, over-molded or co-extruded to a substrate, such as a thermoplastic, wood, glass or metal. The elastomeric composition comprises: (a) one or more copolymers present in an amount of 10 wt. % to 90 wt. %, selected from styrenic block copolymers and isoprene polymers; (b) one or more resins an amount of 2 wt. % to 20 wt. %; and optionally (c) at least one softener, filler, antioxidant or the like present in an amount up to 80 wt. %. The resin is selected from coumarone-indene resin, petroleum hydrocarbon resin, terpene based polymers, styrene-alpha-methyl-styrene resins, rosin derived resins, and mixtures thereof. 1. An elastomeric composition comprising:a) from 3 to 50 wt. % of a resin selected from the group consisting of coumarone-indene resin, petroleum hydrocarbon resin, terpene based resins, styrene-alpha-methyl-styrene resins, terpene phenol resin, rosin derived resins and copolymers and/or mixtures thereof; i) a selectively hydrogenated block copolymer having the general configuration A-B-A, (A-B)n, (A-B-A)n, (A-B-A)nX, (A-B)nX or mixtures thereof, wherein n is an integer from 2 to about 30, and X is coupling agent residue, B is a controlled distribution copolymer block of at least one conjugated diene and at least one mono alkenyl arene; wherein prior to hydrogenation, each block A is a polymer block of one or more mono alkenyl arenes having a number average molecular weight between 3,000 and 60,000 based upon the total weight of the block copolymer, each block B has a number average molecular weight of 30,000 to 300,000 based upon the total weight of the block copolymer;', {'sub': n', 'n', 'n, 'ii) a triblock copolymer having the general configuration S-E-S, (S-E1), (S-E1)S ...

PRODUCING POLYOLEFIN PRODUCTS

Catalyst systems and methods for making and using the same are described. A method includes selecting a catalyst blend using a blend polydispersity index (bPDI) map. The polydispersity map is generated by generating a number of polymers for at least two catalysts. Each polymer is generated at a different hydrogen to ethylene ratio. At least one catalyst generates a higher molecular weight polymer and another catalyst generates a lower molecular weight polymer. A molecular weight for each polymer is measured. The relationship between the molecular weight of the polymers generated by each of the catalysts and the ratio of hydrogen to ethylene is determined. A family of bPDI curves for polymers that would be made using a number of ratios of a blend of the at least two catalysts for each of a number of ratios of hydrogen to ethylene. A ratio for the catalyst blend of the catalysts that generates a polymer having a bPDI that matches a polymer fabrication process is selected, and the product specific polyolefin is made using the catalyst blend. 1. A polymerization catalyst for forming a polyethylene copolymer , comprising:a catalyst support;{'sub': 2', '2', '6', '2, 'sup': −6', '−6, 'a first catalyst that is impregnated on the catalyst support, wherein the first catalyst generates polymers having a slope for a plot of H/Cversus 1/Mw of between about 1.0×10and about 1.5×10, and wherein at a C/Cratio of between about 0.008 and about 0.012, the first catalyst generates a polymer having an MI of about 1.0 dg/10 min, a density of about 0.92 g/cc, and a melt index ratio (MIR) less than about 25; and'}{'sub': 2', '2', '6', '2, 'sup': −6', '−6, 'a second catalyst that is impregnated on the catalyst support with the first catalyst, wherein the second catalyst generates polymers having a slope for a plot of H/Cversus 1/Mw of between about 3.0×10and about 4×10, and wherein at a C/Cratio of between about 0.03 and about 0.04, the second catalyst generates a polymer having an MI of ...

PROCESSES FOR THE PRODUCTION OF HIGH MOLECULAR WEIGHT ETHYLENE/ALPHA-OLEFIN/NON-CONJUGATED INTERPOLYMERS WITH LOW LEVELS OF LONG CHAIN BRANCHING

The invention provides a process to form a polymer composition comprising at least one ethylene/α-olefin/non-conjugated polyene interpolymer, and wherein the polymer composition has at least the following properties: a) a Mw/V0.1 ratio greater than, or equal to, 1.80 (g/mol)/(Pa·s); said process comprising polymerizing one or more mixture(s) comprising ethylene, an α-olefin and a non-conjugated polyene in the presence of a catalyst system comprising a metal-ligand complex of Formula (I), as described herein. 2. The process of claim 1 , wherein the polymer composition has a tan delta (0.1 rad/sec claim 1 , 190° C.) greater than claim 1 , or equal to claim 1 , 1.50.3. The process of claim 1 , wherein the process comprises polymerizing the one or more mixture(s) in one or more reactor(s) claim 1 , and wherein the reactor temperature in at least one reactor is less than 150° C.4. The process of claim 1 , wherein the polymer composition has molecular weight distribution (MWD) from 1.80 to 3.50.5. The process of claim 1 , wherein the process comprises polymerizing the one or more mixture(s) in one reactor or in two reactors.6. The process of claim 1 , wherein the polymer composition comprises two ethylene/α-olefin/non-conjugated polyene interpolymers.7. The process of claim 1 , wherein for Formula I claim 1 , each Z is an oxygen atom.8. The process of claim 1 , wherein for Formula I claim 1 , Rand Rare each C (carbon).9. The process of claim 1 , wherein for Formula I claim 1 , L is selected from the following: —CH2CH2CH2- claim 1 , —CH2CH2- or —CH2-.10. The process of claim 1 , wherein for Formula I claim 1 , M is zirconium.13. A polymer composition formed by the process of .14. A composition comprising the polymer composition of .15. An article comprising at least one component formed from the composition of . The present application claims the benefit of U.S. Provisional Application No. 62/141,110, filed Mar. 31, 2015, and incorporated herein by reference.High molecular ...

Precipitation Process For Preparing Polystyrene Microparticles

A process including combining polystyrene and a first solvent to form a polystyrene solution; heating the polystyrene solution; adding a second solvent to the polystyrene solution with optional stirring whereby polystyrene microparticles are formed via microprecipitation; optionally, cooling the formed polystyrene microparticles in solution; and optionally, removing the first solvent and second solvent. A polystyrene microparticle formed by a microprecipitation process, wherein the polystyrene particle has a spherical morphology, a particle diameter of greater than about 10 micrometers, and a weight average molecular weight of from about 38,000 to about 200,000 Daltons. A method of selective laser sintering including providing polystyrene microparticles formed by a microprecipitation process; and exposing the microparticles to a laser to fuse the microparticles. 1. A process comprising:combining polystyrene and a first solvent to form a polystyrene solution;heating the polystyrene solution;adding a second solvent to the polystyrene solution with optional stirring whereby polystyrene microparticles are formed via microprecipitation;optionally, cooling the formed polystyrene microparticles in solution; andoptionally, removing the first solvent and second solvent.2. The process of claim 1 , further comprising:resuspending the formed polystyrene microparticles in water;mixing; andoptionally, centrifuging;to form concentrated polystyrene microparticles.3. The process of claim 2 , further comprising;freezing the formed concentrated polystyrene microparticles; andoptionally subjecting the freeze dried polystyrene microparticles to a vacuum to remove ice by sublimation.4. The process of claim 1 , wherein the polystyrene has a weight average molecular weight of from about 38 claim 1 ,000 to about 200 claim 1 ,000 Daltons.5. The process of claim 1 , wherein the polystyrene has a glass transition temperature (first heat) and wherein the formed polystyrene microparticles have a ...

CONJUGATED DIENE POLYMER, FORMULATION AND MANUFACTURING METHOD THEREOF

The present invention provides a conjugated diene polymer, formulations, and manufacturing methods for the same. The present invention provides a conjugated diene polymer obtained by polymerizing conjugated diene monomers and vinyl aromatic monomers using an initiator by way of an anionic polymerization, the conjugated diene polymer comprising a plurality of blocks having more than 6 consecutive vinyl aromatic units, wherein a vinyl aromatic monomer content of the plurality of blocks having more than 6 consecutive vinyl aromatic units is less than 5 wt % based on a total vinyl aromatic monomer content of the conjugated diene polymer. The present invention also provides formulations for preparing the conjugated diene polymer and the manufacturing methods for the same. 1. A conjugated diene polymer obtained by polymerizing a conjugated diene monomer and a vinyl aromatic monomer using an initiator via anionic polymerization , the conjugated diene polymer comprising a plurality of blocks having more than six consecutive vinyl aromatic units , wherein a vinyl aromatic monomer content of the plurality of blocks having more than six consecutive vinyl aromatic units is less than 5 wt % based on a total vinyl aromatic monomer content of the conjugated diene polymer.2. The conjugated diene polymer of claim 1 , wherein the conjugated diene polymer comprises a plurality of blocks having four or more than four consecutive vinyl aromatic units claim 1 , and a vinyl aromatic monomer content of the plurality of blocks having four or more than four consecutive vinyl aromatic units is less than 40 wt % claim 1 , less than 30 wt % claim 1 , or less than 25 wt % claim 1 , based on the total vinyl aromatic monomer content of the conjugated diene polymer.3. The conjugated diene polymer of claim 1 , wherein the conjugated diene polymer comprises a plurality of blocks having four to six consecutive vinyl aromatic units claim 1 , and a vinyl aromatic monomer content of the plurality of ...

PROCESS FOR MAKING GRAY EXPANDED POLYSTYRENE

Gray expanded polystyrene achieving target molecular weight, bead size, bead distribution, and cell structure may be reproducibly prepared by suspension polymerization by introducing to the suspension polymerization an additive that is carbon black and/or graphite only after approximately 20 to 60 wt % of the styrene monomer has been converted to polystyrene. Introducing the additive at this point slows the polymerization rate, such as for an optimized period of time to allow for the droplet size to equilibrate to the desired target range. In one nonlimiting embodiment, the styrene polymerization rate has about 35 wt % to about 60 wt % styrene monomer remaining after about 3 hours from the beginning of polymerizing. 1. A method for preparing gray expanded polystyrene (EPS) , the method comprising:polymerizing styrene monomer to polystyrene by suspension polymerization;after approximately 20 to 60 wt % of the styrene monomer has been converted to polystyrene, introducing to the suspension polymerization an additive selected from the group consisting of carbon black, graphite, and combinations thereof; and after a period of polymerizing to allow droplet size to equilibrate to within a desired size range thencontinuing to polymerize the styrene monomer to polystyrene by suspension polymerization to produce gray EPS.2. The method of where the desired droplet size ranges between about 0.1 mm and about 1.0 mm.3. The method of where the gray EPS:has a weight average molecular weight between about 50,000 and about 1,000,000 amu;has a bead size between about 50 and about 1500 microns;has a bead distribution where from about 10 to about 90 weight % of the beads are in the range of about 850 to about 1170 microns; andhas a cell size between about 4 and about 20 cells per millimeter.4. The method of where the gray EPS has a density from about 5 to about 35 g/l.5. The method of where the additive is introduced by a method selected from the group consisting of:introducing the ...

COLOR DEVELOPMENT OF CARBON BLACK IN EXPANDED POLYSTYRENE

When long chain primary alcohols are into expanded polystyrene (EPS) containing an additive such as carbon black or graphite to give gray EPS, the long chain primary alcohols act as color enhancing agents and generate a darker color as compared with an otherwise identical gray EPS absent the additive. 1. A method for preparing gray expanded polystyrene (EPS) , the method comprising:introducing styrene monomer and a polymerization initiator into a suspension polymerization formulation;introducing into the suspension polymerization an additive selected from the group consisting of carbon black, graphite, and combinations thereof;before, during or after introducing the additive, introducing into the suspension polymerization formulation at least one color enhancing agent selected from the group consisting of long chain primary alcohols, long chain primary alcohols modified with a polar group, and combinations thereof, where the long chain primary alcohols have a weight average molecular weight of from about 250 amu to about 2000 amu; andpolymerizing the styrene monomer to polystyrene by suspension polymerization to produce gray EPS.2. The method of where the long chain primary alcohols modified with a polar group comprise long chain primary alcohols modified with 1 to 7 ethoxylate groups.3. The method of where the amount of color enhancing agent ranges from about 500 to about 3000 ppm based on the styrene monomer present.4. The method of where the gray EPS is darker than an identical gray EPS absent the color enhancing agent.5. The method of where the gray EPS:has a weight average molecular weight between about 50,000 and about 1,000,000 amu;has a bead size between about 500 and about 1500 microns;has a bead distribution where from about 10 to about 90 weight % of the beads are in the range of about 850 to about 1170 microns; andhas a cell size between about 4 and about 20 cells per millimeter.6. The method of where the gray EPS has a density from about 5 to about 35 g ...

Dual Catalyst System for Producing High Density Polyethylenes With Long Chain Branching

Disclosed herein are ethylene-based polymers generally characterized by a melt index of less than 1 g/10 min, a density from 0.93 to 0.965 g/cm, a CY-a parameter at 190° C. of less than 0.2, an average number of short chain branches per 1000 total carbon atoms of the polymer in a molecular weight range of 400,000 to 600,000 g/mol that is greater than that in a molecular weight range of 40,000 to 60,000 g/mol, and an average number of long chain branches per 1000 total carbon atoms of the polymer in a molecular weight range of 400,000 to 600,000 g/mol that is greater than that in a molecular weight range of 4,000,000 to 6,000,000 g/mol. The ethylene polymers can be used to fabricate pipes, blown films, and blow molded products, and the ethylene polymers can be produced with a dual catalyst system containing a single atom bridged or two carbon atom bridged metallocene compound with two indenyl groups or an indenyl group and a cyclopentadienyl group, and a single atom bridged metallocene compound with a fluorenyl group and a cyclopentadienyl group with an alkenyl substituent. 1. An ethylene polymer having:a melt index of less than or equal to about 1 g/10 min;{'sup': '3', 'a density in a range from about 0.93 to about 0.965 g/cm;'}a CY-a parameter at 190° C. of less than or equal to about 0.2;an average number of short chain branches (SCB's) per 1000 total carbon atoms of the polymer in a molecular weight range of 400,000 to 600,000 g/mol that is greater than that in a molecular weight range of 40,000 to 60,000 g/mol; andan average number of long chain branches (LCB's) per 1000 total carbon atoms of the polymer in a molecular weight range of 400,000 to 600,000 g/mol that is greater than that in a molecular weight range of 4,000,000 to 6,000,000 g/mol.2. An article of manufacture comprising the polymer of .3. The polymer of claim 1 , wherein:the average number of SCB's per 1000 total carbon atoms of the polymer in the molecular weight range of 400,000 to 600,000 g/mol ...

Polymer Compositions With PBSA Plasticizer

A polymeric composition is disclosed which includes from about 40 to about 99 weight percent of a first polymer and from about 1 to about 60 weight percent of polybutylene(succinate-co-adipate) (“PBSA”). Preferably the first polymer is selected from the group consisting of polyvinyl chloride, polylactic acid, polyhydroxy alkanoates, and mixtures thereof. A method for making the composition is also disclosed.

HEAT-RESISTANT SAN RESIN, METHOD OF PRODUCING THE SAME AND HEAT-RESISTANT SAN RESIN COMPOSITION COMPRISING THE SAME

Disclosed are a heat-resistant SAN resin, a method of producing the same and a heat-resistant SAN resin composition comprising the same. More specifically, disclosed are a heat-resistant SAN resin produced using ingredients comprising 52 to 78% by weight of alpha-methylstyrene, 20 to 40% by weight of a vinyl cyanide compound and 2 to 8% by weight of hydroxyalkyl (meth)acrylate, a method of producing the same and a heat-resistant SAN resin composition comprising the same. Advantageously, provided are a heat-resistant SAN resin with maintained heat resistance, improved polymerization conversion rate and increased weight average molecular weight, a method of producing the same, and a heat-resistant SAN resin composition containing the same with excellent chemical resistance, superior mechanical properties and good balance between properties. 1. A heat-resistant SAN resin produced using ingredients comprising 52 to 78% by weight of alpha-methylstyrene , 20 to 40% by weight of a vinyl cyanide compound and 2 to 8% by weight of hydroxyalkyl (meth)acrylate.2. The heat-resistant SAN resin according to claim 1 , wherein the vinyl cyanide compound comprises one or more selected from the group consisting of acrylonitrile claim 1 , methacrylonitrile and ethacrylonitrile.3. The heat-resistant SAN resin according to claim 1 , wherein the hydroxyalkyl (meth)acrylate comprises one or more selected from the group consisting of hydroxyethyl acrylate claim 1 , 2-hydroxypropyl acrylate claim 1 , 3-hydroxypropyl acrylate claim 1 , 2-hydroxybutyl acrylate claim 1 , 4-hydroxybutyl acrylate claim 1 , 3-hydroxypentyl acrylate claim 1 , 6-hydroxynonyl acrylate claim 1 , hydroxyethyl methacrylate claim 1 , 2-hydroxypropyl methacrylate claim 1 , 3-hydroxypropyl methacrylate claim 1 , 2-hydroxybutyl methacrylate claim 1 , 2-hydroxypentyl methacrylate claim 1 , 5-hydroxypentyl methacrylate claim 1 , 7-hydroxyheptyl methacrylate and 5-hydroxydecyl methacrylate.4. The heat-resistant SAN resin ...

METHOD FOR PREPARING ORIENTED POLYVINYL CHLORIDE

Provided are methods for improving the melt strength of oriented thermoplastic polymer compositions comprising a polyvinyl chloride formulation, comprising adding an acrylic copolymer to the oriented thermoplastic polymer composition, wherein the acrylic copolymer comprises polymerized units derived from (i) 50 to 95 weight % of methyl methacrylate monomers, and (ii) 5 to 50 weight % of C-Calkyl (meth)acrylate monomers, based on the total weight of monomers in the acrylic copolymer, wherein the acrylic copolymer has a M/GPC-PS of 4×10g/mol or more. 1. A method for improving the melt strength of an oriented thermoplastic polymer composition comprising a polyvinyl chloride formulation , comprising adding an acrylic copolymer to the oriented thermoplastic polymer composition , wherein the acrylic copolymer comprises polymerized units derived from (i) 50 to 95 weight % of methyl methacrylate monomers , and (ii) 5 to 50 weight % of C-Calkyl (meth)acrylate monomers , based on the total weight of monomers in the acrylic copolymer , wherein the acrylic copolymer has a M/GPC-PS of 4×10g/mol or more.2. The method according to claim 1 , wherein the polyvinyl chloride formulation comprises a polyvinyl chloride and a component selected from the group consisting of internal lubricants claim 1 , external lubricants claim 1 , stabilizers claim 1 , inorganic fillers claim 1 , and combinations of these.3. The method according to claim 1 , wherein the acrylic copolymer comprises polymerized units derived from (i) 55 to 85 weight % of methyl methacrylate monomers claim 1 , and (ii) 15 to 45 weight % of C-Calkyl (meth)acrylate monomers claim 1 , based on the total weight of the monomers in the acrylic copolymer.4. The method according to claim 1 , wherein the acrylic copolymer comprises polymerized units derived from (i) 60 to 82 weight % of methyl methacrylate monomers claim 1 , and (ii) 18 to 40 weight % of C-Calkyl (meth)acrylate monomers claim 1 , based on the total weight of the ...

Abs molding composition having improved crack and chemical resistance and its use

Thermoplastic molding composition scan be advantageously used in hydrofluoro olefin containing areas, comprising components A, B, C and, D: 10 to 35 wt.-% ABS graft rubber A obtained by emulsion polymerization, 50 to 75 wt.-% SAN copolymer B, 4 to 20 wt.-% copolymer C from ethylene and C1-C6-alkyl(meth)acrylate, and 4 to 20 wt.-% ABS graft rubber copolymer D obtained by mass polymerization.

SMOOTHNESS IMPROVING ADDITIVE FOR CALENDERING PROCESS

Provided are a smoothness improving additive for a calendering process and a polyvinylchloride-based composition including the same. More particularly, a smoothness improving additive allowing, even in the case of using a plasticizer in a smaller amount than the conventional amount used, excellent productivity and excellent processability in a calendering process to accelerate a production speed, excellent mechanical physical properties such as glass transition temperature and tensile strength of a molded body, and manufacture of a molded body having better smoothness is provided. 1. A smoothness improving additive for a calendering process , comprising:a methylmethacrylate-based polymer having a weight average molecular weight of 16,000 to 48,000 g/mol and a melt index of 0.2 to 15 g/10 min, measured at 170° C. under 3.8 kg.2. The smoothness improving additive of claim 1 , wherein the methylmethacrylate-based polymer is any one resin or a mixed resin of two or more selected from the group consisting of a methylmethacrylate homopolymer and a methylmethacrylate copolymer.3. The smoothness improving additive of claim 1 , wherein the methylmethacrylate-based polymer has a glass transition temperature of 90° C. or more.4. The smoothness improving additive of claim 1 , wherein the smoothness improving additive is used in a calendering process of polyvinylchloride-based flooring.5. A base layer for polyvinylchloride-based flooring claim 1 , comprising the smoothness improving additive of .6. The base layer of claim 5 , wherein the base layer has a thickness of 1.0 to 5.0 mm.7. The smoothness improving additive of claim 2 , wherein the smoothness improving additive is used in a calendering process of polyvinylchloride-based flooring.8. A base layer for polyvinylchloride-based flooring claim 2 , comprising the smoothness improving additive of .9. The smoothness improving additive of claim 3 , wherein the smoothness improving additive is used in a calendering process of ...

Resin composition and film comprising resin composition

Provided is a resin composition containing 15% by weight to 80% by weight of the following polymer X and 20% by weight to 85% by weight of the following polymer Y based on the total weight of polymers contained in the resin composition: polymer X: polyvinylidene fluoride resin; and, polymer Y: copolymer having a domain (y1) compatible with the polymer X and a domain (y2) incompatible with the polymer X, and having a molecular weight distribution of 3.0 to 16.0. The weight average molecular weight of the polymer Y determined by gel permeation chromatography as polymethyl methacrylate is preferably 50,000 to 750,000.

One Step Synthesis of Ultrahigh Molecular Weight Block Copolymers

Single-step synthesis processes for production of ultrahigh molecular weight block copolymers are described. The ultrahigh molecular weight copolymers can have a molecular weight of about 10or greater and can be formed within a few hours in a surfactant-free environment. The formation process is controlled by initiator-starvation conditions in a sequential polymerization of monomers exhibiting different solubility in the solvent. 1. A method for forming ultrahigh molecular weight block copolymers comprisingcombining a first monomer and a second monomer in a solvent, the first monomer exhibiting greater solubility in the solvent as compared to the second monomer, the second monomer aggregating in the solvent to form dispersed droplets upon addition of the second monomer to the solvent, the concentration of the first monomer in the solvent being greater than the concentration of the second monomer in the solvent; andadding a polymerization initiator to the solvent at a rate of about 0.1 milligrams initiator per minute or slower, wherein the initiator is soluble in the solvent at the reaction conditions.2. The method of claim 1 , wherein the ultrahigh molecular weight block copolymers have a number average molecular weight of about 500 claim 1 ,000 or greater.3. The method of claim 1 , wherein no surfactants are added to the solvent.4. The method of claim 1 , wherein the ultrahigh molecular weight block copolymers are formed over a period of about 6 hours or less.5. The method of claim 1 , wherein the ultrahigh molecular weight block copolymers are in the form of core/shell nanoparticles.6. The method of claim 5 , wherein the core/shell nanoparticles form inverse polymeric micelles in response to a stimulation.7. The method of claim 1 , wherein the ultrahigh molecular weight block copolymers are high aspect ratio block copolymers.8. The method of claim 1 , wherein the solvent is an aqueous solvent.9. The method of claim 8 , wherein the solvent is water.10. The method ...

FUEL COMPOSITION

A fuel composition for powering a combustion engine the composition comprising: a liquid base fuel; and a copolymer obtainable by copolymerizing at least the following monomers: —at least one bicyclic (meth)acrylate ester; —at least one fatty-alkyl (meth)acrylate; —optionally, and preferably, at least one aromatic vinyl monomer; and —optionally other ethylenically unsaturated monomers. 1. A fuel composition for powering a combustion engine , the composition comprising:a liquid base fuel; anda copolymer obtainable by copolymerizing at least the following monomers:at least one bicyclic (meth)acrylate ester;at least one fatty-alkyl (meth)acrylate;optionally at least one aromatic vinyl monomer; andoptionally other ethylenically unsaturated monomers.2. A fuel composition according to wherein the fatty-alkyl (meth)acrylate is a C-Calkyl (meth)acrylate claim 1 , wherein the C-Calkyl group can be linear or branched claim 1 , substituted or unsubstituted claim 1 , saturated or unsaturated.3. A fuel composition according to wherein the copolymer has a weight averaged molecular weight from 400 claim 1 ,000 to 50 claim 1 ,000 claim 1 ,000 Dalton.5. The fuel composition according to claim 1 , wherein the copolymer comprises:10 to 95 wt % of the bicyclic (meth)acrylate ester;5 to 80 wt %, pref. 5-40, of the fatty-alkyl (meth)acrylate;0 to 65 wt % of the aromatic vinyl monomer;0 to 50 wt % of other ethylenically unsaturated monomers, up to a total of 100 wt %, wherein the weight percentages of the monomer are based on the total weight of all the monomers.6. The fuel composition according to claim 1 , wherein the copolymer comprises:20 to 95 wt % of the bicyclic (meth)acrylate ester;5 to 80 wt %, pref. 5-40, of the fatty-alkyl (meth)acrylate;0 to 65 wt % of the aromatic vinyl monomer;0 to 50 wt % of other ethylenically unsaturated monomers, up to a total of 100 wt %, wherein the weight percentages of the monomer are based on the total weight of all the monomers.7. The fuel ...

POLYETHYLENE MATERIAL AND APPLICATION THEREOF

Provided is a polyethylene material and application thereof. A density distribution of the polyethylene material is in a range of 0.880 g/cm-0.960 g/cm. An amount of a fraction at a temperature of 40° C. obtained by conducting temperature rising elution fractionation on the polyethylene material is in a range of 9.0 wt %-40.0 wt %, preferably in a range of 10.0 wt %-25.0 wt %, more preferably in a range of 9.9 wt %-20.0 wt %. A melting temperature of the polyethylene material is 110° C.-135° C., preferably 116° C.-130° C. The polyethylene material provided by the present application has distinctly improved amount of medium/low-molecular-weight fractions and high-degree-branching fractions, as well as relatively high-molecular-weight fractions which are highly branched. The polyethylene material thus has a relative high melting temperature. 1. A polyethylene material , having a density distribution in a range of 0.880 g/cm3-0.960 g/cm3; an amount of a fraction at a temperature of 40° C. in a range of 9.0 wt %-40.0 wt % , preferably in a range of 10.0 wt %-25.0 wt % , more preferably in a range of 9.9 wt %-20.0 wt % , as determined by conducting temperature rising elution fractionation on the polyethylene material , a melting temperature of the polyethylene material is in a range of 110° C.-135° C. , preferably in a range of 116° C.-130° C.2. The polyethylene material according to claim 1 , wherein the polyethylene material has an amount of a fraction at a temperature of 110° C. in a range of 8.0 wt %-30.0 wt % claim 1 , preferably in a range of 9.0 wt %-18.0 wt %.3. The polyethylene material according to claim 1 , wherein as determined by temperature rising elution fractionation claim 1 , a standard deviation of amounts of two fractions of the polyethylene material at temperatures at an interval of 10° C. from 40° C. to 110° C. is in a range of 0%-6.0% claim 1 , preferably in a range of 0.5%-3.5%.4. The polyethylene material according to claim 1 , wherein a number- ...

Olefin-Block Copolymers and their use in Elastomeric Articles

An elastomeric article comprising an olefin-block copolymer comprising within a range from 4 to 40 mol % of C4 to C12 α-olefin derived units, the remainder being ethylene-derived units, wherein the melting point temperature (T) is within a range from 92° C. to 120° C., and having an M/Mvalue of less than 2.5. The olefin-block copolymer is desirably generated by combining ethylene, C4 to C12 α-olefins, a single site catalyst, preferably a fluxional catalyst, and an activator. The elastomeric article may be an elastic hygiene garment, especially a garment comprising a waistband, stretch ear panels and/or belly bands. 1. An elastomeric article comprising an olefin-block copolymer comprising within a range from 4 to 40 mol % of C4 to C12 α-olefin derived units , the remainder being ethylene-derived units , wherein the melting point temperature (T) is within a range from 92° C. to 120° C. , and having an M/Mvalue of less than 2.5.2. The elastomeric article of claim 1 , wherein the olefin-block copolymer is generated by combining ethylene claim 1 , C4 to C12 α-olefins claim 1 , a single-site catalyst claim 1 , and an activator.3. The elastomeric article of claim 1 , wherein the olefin-block copolymer has a Mwithin a range from 100 claim 1 ,000 g/mole to 300 claim 1 ,000 g/mole and a melt index (MI) of less than 1.4 g/10 min.4. The elastomeric article of claim 1 , wherein the olefin-block copolymer has a peak melting point temperature (T) within a range from 92° C. to 110° C. within a range of 4 mol % to 20 mol % overall comonomer content.5. The elastomeric article of claim 1 , wherein the C4 to C12 α-olefin rich blocks comprise within a range from 20 mol % to 80 mol % C4 to C12 α-olefin derived units claim 1 , and wherein the C4 to C12 α-olefin poor blocks comprise within a range from 40 mol % to 5 mol % C4 to C12 α-olefin derived units.6. The elastomeric article of claim 1 , wherein the C4 to C12 α-olefin derived units comprise 1-hexene or 1-octene claim 1 , preferably 1 ...

SEALANT

A sealant including a block copolymer comprising a polymer block (a) comprising a structural unit derived from an aromatic vinyl compound and a polymer block (b) comprising 1 to 100% by mass of a structural unit (b1) derived from farnesene and 99 to 0% by mass of a structural unit (b2) derived from a conjugated diene other than farnesene, a mass ratio [(a)/(b)] of the polymer block (a) to the polymer block (b) being 5/95 to 45/55, is excellent in molding processability, flexibility, and adhesiveness and also excellent in sound insulation properties and vibration-damping properties (vibration attenuation properties) in a high frequency region in the neighborhood of 4,000 Hz even under high temperatures. 1. A sealant , comprising a block copolymer (A) comprising:a polymer block (a) comprising a structural unit derived from an aromatic vinyl compound; anda polymer block (b) comprising 1 to 100% by mass of a structural unit (b1) derived from a farnesene and 99 to 0% by mass of a structural unit (b2) derived from a conjugated diene other than the farnesene,wherein a mass ratio [(a)/(b)] of the polymer block (a) to the polymer block (b) is being 5/95 to 45/55.2. The sealant according to claim 1 , wherein a peak top molecular weight (Mp) of the block copolymer (A) determined by conversion into standard polystyrene by gel permeation chromatography is 4 claim 1 ,000 to 500 claim 1 ,000.3. The sealant according to claim 1 , wherein a loss factor of the block copolymer (A) in the range of from 40 to 80° C. under an excitation condition with a frequency of 4 claim 1 ,000 Hz is 0.07 or more.4. The sealant according to claim 1 , wherein the aromatic vinyl compound is styrene.5. The sealant according to claim 1 , wherein the farnesene is β-farnesene.6. The sealant according to claim 1 , wherein the conjugated diene other than the farnesene is at least one selected from isoprene claim 1 , butadiene claim 1 , and myrcene.7. The sealant according to claim 1 , wherein a molecular ...

Olefin-based Copolymer And Process For Preparing Same

The present invention relates to an olefin-based copolymer having novel crystalline properties and capable of providing a molded article with further improved strength and impact strength when compounded with other resins, and a method for preparing the same. The olefin-based copolymer is an olefin-based copolymer comprising an ethylene repeating unit and an α-olefinic repeating unit. The olefin-based copolymer comprises polymer fractions defined by three different peaks at a predetermined temperature when analyzed by cross-fractionation chromatography. 1. An olefin-based copolymer comprising an ethylene repeating unit and an α-olefin-based repeating unit ,wherein when the olefin-based copolymer is analyzed by cross-fractionation chromatography (CFC), it includesa first fraction defined as a first peak appearing at a first elution temperature (Te1) of −20″C to 50° C.,a second fraction defined as a second peak appearing at a second elution temperature (Te2) of 50° C. to 85° C., anda third fraction defined as a third peak appearing at a third elution temperature (Te3) higher than that of the second elution temperature (Te2), for example, at a temperature of 85° C. to 130° C.,and wherein the fraction ratio of the second fraction defined by the integral area of the second peak is 7 to 75%.2. The olefin-based copolymer according to claim 1 , wherein the central peak temperature of the second peak of the olefin-based copolymer is 50° C. to 85° C.3. The olefin-based copolymer according to claim 1 , wherein the central peak temperature of the first peak of the olefin-based copolymer is −15° C. to 15° C. claim 1 , and the fraction ratio of the first fraction defined by the integral area of the first peak is 50 to 75%.4. The olefin-based copolymer according to claim 1 , wherein the central peak temperature of the third peak is 85° C. to 100° C. claim 1 , and the fraction ratio of the third fraction defined by the integral area of the third peak is 5 to 75%.5. The olefin-based ...

PREPOLYMER, METHOD OF PREPARING THE SAME, RESIN COMPOSITION AND ARTICLE MADE THEREFROM

A prepolymer, which is prepared by subjecting an unsaturated bond-containing compound and a bis(vinylphenyl) compound monomer or a polymer thereof to a prepolymerization reaction, is provided. The bis(vinylphenyl) compound contains between 80% and 99% of para-para vinyl groups and has a monomer content of between 80% and 100%. Moreover, a resin composition comprising the prepolymer and an additive, a method of preparing the prepolymer, and an article made from the resin composition are also provided. 2. The prepolymer of claim 1 , wherein the unsaturated bond-containing compound comprises acrylate claim 1 , styrene claim 1 , t-butyl styrene claim 1 , divinylbenzene claim 1 , triallyl isocyanurate claim 1 , triallyl cyanurate claim 1 , 1 claim 1 ,2 claim 1 ,4-trivinyl cyclohexane claim 1 , polyphenylene oxide claim 1 , cyanate ester claim 1 , maleimide resin or a combination thereof.3. The prepolymer of claim 1 , wherein the prepolymerization reaction is performed in the presence of a peroxide.4. The prepolymer of claim 3 , wherein the peroxide comprises benzoyl peroxide claim 3 , dicumyl peroxide claim 3 , 2 claim 3 ,5-dimethyl-2 claim 3 ,5-di(t-butylperoxy)hexane claim 3 , 2 claim 3 ,5-dimethyl-2 claim 3 ,5-di(t-butylperoxy)-3-hexyne claim 3 , di-t-butyl peroxide claim 3 , di(t-butylperoxyisopropyl)benzene claim 3 , di(t-butylperoxy)phthalate claim 3 , di(t-butylperoxy)isophthalate claim 3 , t-butyl peroxybenzoate claim 3 , 2 claim 3 ,2-di(t-butylperoxy)butane claim 3 , 2 claim 3 ,2-di(t-butylperoxy)octane claim 3 , 2 claim 3 ,5-dimethyl-2 claim 3 ,5-di(benzoylperoxy)hexane claim 3 , lauroyl peroxide claim 3 , t-hexyl peroxypivalate claim 3 , dibutylperoxyisopropylbenzene claim 3 , bis(4-t-butylcyclohexyl) peroxydicarbonate or a combination thereof.5. The prepolymer of claim 1 , wherein the prepolymerization reaction is performed in the presence of a molecular weight regulator.6. The prepolymer of claim 5 , wherein the molecular weight regulator comprises n-butyl ...

CATALYST COMPOSITION AND A PROCESS FOR MAKING ULTRA HIGH MOLECULAR WEIGHT POLY (ALPHA-OLEFIN) DRAG REDUCING AGENTS

A method of producing ultra high molecular weight (UHMW) C-Cα-olefin drag reducing agent (DRA). The method includes polymerizing in a reactor a first α-olefin monomer in the presence of catalyst and hydrocarbon solvent to produce the DRA. The catalyst consists essentially of at least one tertiary monophenyl amine having a formula RRN-aryl, where Rand Rare the same or different, and each is a hydrogen, an alkyl, or a cycloalkyl group, where at least one of Rand Rcontain at least one carbon atom; at least one titanium halide having a formula TiX, where m is from 2.5 to 4.0 and X is a halogen containing moiety; and at least one cocatalyst having a formula AlRYwhere R is a hydrocarbon radical, Y is a halogen or hydrogen, and n is 1-20. Further, the catalyst is absent of a carrier or support. 1. A method of producing ultra high molecular weight (UHMW) C-Cα-olefin drag reducing agent (DRA) comprising:{'sub': 4', '30, 'claim-text': [{'sup': 1', '2, 'at least one tertiary monophenyl amine having a formula RRN-aryl,'}, {'sup': 1', '2', '1', '2, 'where Rand Rare the same or different, and each is a hydrogen, an alkyl, or a cycloalkyl group, where at least one of Rand Rcontain at least one carbon atom;'}, {'sub': 'm', 'at least one titanium halide having a formula TiX, where m is from 2.5 to 4.0 and X is a halogen containing moiety; and'}, {'sub': n', '3-n, 'at least one cocatalyst having a formula AlRYwhere R is a hydrocarbon radical, Y is a halogen or hydrogen, and n is 1-20,'}, 'where the catalyst is absent of a carrier or support., 'polymerizing in a reactor a first α-olefin monomer in the presence of a catalyst and a hydrocarbon solvent to produce the UHMW C-Cα-olefin polymer DRA, where the catalyst consists essentially of2. The method of where the UHMW C-Cα-olefin polymer DRA is a homopolymer claim 1 , copolymer claim 1 , or a terpolymer.3. The method of where the polymerizing step involves copolymerizing the first α-olefin monomer with a second α-olefin comonomer claim ...

PROCESS AND CATALYST COMPOSITION FOR PRODUCING SELECTIVELY HYDROGENATED CONJUGATED DIENE POLYMER

A catalyst composition for selectively hydrogenating a conjugated diene polymer in a homogeneous system is provided, wherein the conjugated diene polymer comprises a conjugated diene monomer or a combination of a conjugated diene monomer and a vinyl aromatic monomer. The catalyst composition includes the catalyst components of (a) a titanium compound; (b) an organometallic compound; and (c) an oligomer containing a polyglycol segment. The hydrogenated polymer produced using the catalyst composition and the method thereof is also provided. 2. The catalyst composition according to claim 1 , wherein the catalyst component (c) is a homopolymer of ethylene glycol or propylene glycol claim 1 , a block copolymer of ethylene glycol and propylene glycol claim 1 , or a random copolymer of ethylene glycol and propylene glycol.3. The catalyst composition according to claim 2 , wherein the catalyst component (c) is a poly(ethylene glycol)-block-poly(propylene glycol) (PEG-b-PPG) or a poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) (PEG-b-PPG-b-PEG).4. The catalyst composition according to claim 1 , wherein the catalyst component (c) is a poly(dimethylsiloxane-b-ethylene oxide) claim 1 , methyl terminated (PDMS-PEG).5. The catalyst composition according to claim 1 , wherein the catalyst component (c) has a weight average molecular weight (Mw) from 400 to 10 claim 1 ,000.6. The catalyst composition according to claim 1 , wherein a molar ratio of the catalyst component (a) to the catalyst component (b) is from 0.01 to 50.7. The catalyst composition according to claim 1 , wherein a molar ratio of the catalyst component (c) to the catalyst component (a) is from 0.1 to 10.8. The catalyst composition according to claim 1 , wherein the catalyst component (a) is present in an amount of 0.0001 mmole to 50 mmole based on 100 g of the conjugated diene polymer.9. The catalyst composition according to claim 1 , wherein the catalyst composition can hydrogenate ...

HIGH DENSITY ROTOMOLDING RESIN

The present disclosure provides high density polyethylene resins having good low temperature impact resistance. The resins are suitable for use in rotomolding application for large parts. The resin is a bi- or trimodal resin produced using solution phase polymerization in the presence of a single site catalyst. 1. A polyethylene resin comprising less than 1 weight % of 1-octene and the balance ethylene , having a density from 0.948 to 0.953 g/cc , a melt index determined according to ASTM1238 under a load of 2.16 kg at a temperature of 190° C. (I) from 1.0 to 1.5 g/10 minutes; a melt index determined according to ASTM1238 under a load of 21.6 kg at a temperature of 190° C. (I) from 32 to 55 g/10 minutes; a weight average molecular weight (Mw) determined by gel permeation chromatography from 90 ,000 to 130 ,000; a number average molecular weight (Mn) determined by gel permeation chromatography (GPC) from 20 ,000 to 40 ,000; a z average molecular weight (Mz) from 240 ,000 to 360 ,000; an Mw/Mn from 2.9 to 4; an Mz/Mw from 2.9 to 3.2; and having a CBDI (50) from 80 to 95 , the molecular weight distribution determined by GPC of said polymer being deconvoluted into at least two components comprising:from 20 to 40 weight % of a first component having a calculated weight average molecular weight (Mw) being from 200,000 to 250,000; a calculated number average molecular weight from 90,000 to 135,000; a z average molecular weight 390,000 to 490,000 and an estimated density from 0.921 to 0.930 g/cc;from 60 to 80 weight % of a second component having a calculated weight average molecular weight (Mw) being from 37,000 to 57,000; a calculated number average molecular weight (Mn) from 18,000 to 30,000; a z average molecular weight 60,000 to 85,000 and an estimated density from 0.948 to 0.953 g/cc, provided that the density difference between component two and component one is less than 0.030 g/cc.2. The polyethylene resin according to claim 1 , having a flex secant modulus 1% from ...

Thermoplastic Polyolefin Compositions

This invention relates to a thermoplastic polyolefin composition with (a) a polypropylene having a melting point of greater than 130° C. and a melt flow rate from 10 to 80 g/10 min; (b) an ethylene-propylene copolymer with 40 wt % to 80 wt % ethylene derived units and a Mooney Viscosity (1+4, 125° C.) of greater than 20 Mooney units, a Mw/Mn of from 1.8 to 4.0, and a weight average molecular weight of 50,000 to 300,000 g/mole; and (c) a propylene-based elastomer having 5 wt % to 25 wt % ethylene derived units and having a melting point of less than 110° C. and a Mw/Mn from 2.0 to 4.0; wherein the room temperature notch impact of the thermoplastic polyolefin composition is at least four times greater than the room temperature notch impact of a composition without the propylene-based elastomer. 1. A thermoplastic polyolefin composition comprising:{'sub': 'm', 'a polypropylene having a melting point temperature (T) of greater than 130° C. and a melt flow rate (230° C./2.16 kg) within the range from 10 g/10 min to 80 g/10 min;'}an ethylene-propylene copolymer comprising within the range from 40 wt % to 80 wt % ethylene derived units and having a Mooney Viscosity (1+4, 125° C.) of greater than about 20 Mooney units, a Mw/Mn within the range from 1.8 to 4.0, and a weight average molecular weight (Mw) within a range of from 50,000 g/mole to 300,000 g/mole; and{'sub': 'm', 'a propylene-based elastomer having within the range from 5 to 25 wt % ethylene derived units and having a melting point temperature (T) of less than 110° C. and a Mw/Mn within the range from 2.0 to 4.0,'}wherein the room temperature notch impact of the thermoplastic polyolefin composition is at least four times greater than the room temperature notch impact of a composition without the propylene-based elastomer.2. The thermoplastic polyolefin composition of claim 1 , wherein the room temperature notch impact of the thermoplastic polyolefin composition is at least ten times greater than the room ...

Protective structure

A protective structure is provided, which includes a porous layer and a surface layer disposed on the porous layer. The porous layer includes a first copolymer, a plurality of pores, and a plurality of first silica particles, wherein the first copolymer is polymerized from a first monomer composition. The first monomer composition includes N,N-dimethylacrylamide and N-vinylpyrrolidone. The surface layer includes a second copolymer, a plurality of fibers, and a plurality of second silica particles, wherein the second copolymer is polymerized from a second monomer composition. The second monomer composition includes N,N-dimethylacrylamide and N-vinylpyrrolidone.

Catalysts that Produce Polyethylene with Broad, Bimodal Molecular Weight Distribution

The present disclosure relates to ansa-metallocene catalyst compounds that include (1) a first indenyl ligand substituted at the 3-position with a substituted or unsubstituted C4-C40 hydrocarbyl group, wherein the hydrocarbyl group is branched at the β-position, and (2) a second indenyl ligand substituted at its 3-position with a substituted or unsubstituted alkyl group or a β-branched alkyl group. Catalyst systems prepared with the catalyst compounds, polymerization methods using such catalyst systems, and polyolefins made using the polymerization methods are also described.

POLYETHYLENE, METHOD FOR PREPARING THE SAME AND SEPARATOR USING THE SAME

Disclosed herein is a polyethylene. The polyethylene has a melt flow index of about 0.4 g/10 min to about 0.6 g/10 min, a weight average molecular weight of about 500,000 g/mol to about 700,000 g/mol, and a molecular weight distribution of about 3 to about 5 and is prepared by polymerization in the presence of a catalyst retaining at least about 50% of an initial reactivity level (during initial 30 minutes) for a period of time exceeding about 4 hours. 1. A polyethylene having a melt flow index of about 0.4 g/10 min to about 0.6 g/10 min , as measured at a temperature of 190° C. and under a load of 2.16 kg , a weight average molecular weight of about 500 ,000 g/mol to about 700 ,000 g/mol , and a molecular weight distribution of about 3 to about 5 , wherein the polyethylene is prepared by polymerization in the presence of a catalyst retaining at least about 50% of an initial reactivity level (during initial 30 minutes) for a period of time exceeding about 4 hours.2. The polyethylene according to claim 1 , wherein the catalyst is a Ziegler-Natta catalyst in which a titanium compound is supported on a magnesium support.3. The polyethylene according to claim 1 , wherein the polyethylene has a melting transition heat capacity of about 180 J/g or less claim 1 , as measured by differential scanning calorimetry claim 1 , and an average particle diameter of about 80 μm to about 180 μm.4. A method of preparing the polyethylene according to claim 1 , the method comprising:polymerizing ethylene in the presence of a catalyst retaining at least about 50% of an initial reactivity level (during initial 30 minutes) for a period of time exceeding about 4 hours.5. The method according to claim 4 , wherein a molecular weight of the polyethylene is controlled by adjusting an input of hydrogen in the range of about 350 ppm to about 800 ppm.6. The method according to claim 4 , wherein the catalyst is a Ziegler-Natta catalyst in which a titanium compound is supported on a magnesium ...

Polyolefin-based Film

The present disclosure provides a polyolefin-based film including an olefin polymer which is controlled in the content of the branched polymer structure in the polymer and the weight average molecular weight of the main chain in the structure to exhibit excellent processability and transparency. Therefore, the polyolefin-based film not only exhibits high transparency independent of processing conditions, but also reduces the increase in film haze even when the thickness of the film increases. 1. A polyolefin-based film comprising an olefin polymer satisfying the following conditions (a) to (d):{'sup': 3', '3, '(a) a density: 0.910 g/cmto 0.930 g/cm'}(b) a melt index (measured according to ASTM D1238 at a temperature of 190° C. under a load of 2.16 kg): 0.5 g/10 min to 2.0 g/10 min(c) a content of a branched polymer structure: 1 to 7 wt % based on the total weight of the olefin polymer(d) a weight average molecular weight of main chain in the branched polymer structure: 100,000 to 600,000 g/mol.2. The polyolefin-based film of claim 1 , wherein MFRR (21.6/2.16) claim 1 , a value that the melt flow rate (MFR) measured at a temperature of 190° C. under a load of 21.6 kg according to ISO 1133 is divided by the melt flow rate (MFR) measured at a temperature of 190° C. under a load of 2.16 kg according to ISO 1133 claim 1 , is 20 or more and less than 40.3. The polyolefin-based film of claim 1 , wherein the olefin polymer has a weight average molecular weight of 90 claim 1 ,000 g/mol to 600 claim 1 ,000 g/mol.4. The polyolefin-based film of claim 1 , wherein the olefin polymer has a Z average molecular weight (Mz+1) of 400 claim 1 ,000 g/mol to 600 claim 1 ,000 g/mol.5. The polyolefin-based film of claim 1 , wherein the olefin polymer has a polydispersity index of 1 to 3.6. The polyolefin-based film of claim 1 , wherein the olefin polymer is a copolymer of ethylene and an alpha-olefin.7. The polyolefin-based film of claim 1 , wherein the olefin polymer is a copolymer of ...

Bimodal Polyethylene Resins and Pipes Produced Therefrom

Disclosed herein are ethylene-based polymers generally characterized by a density of at least 0.94 g/cm, a high load melt index from 4 to 20 g/10 min, a zero-shear viscosity at 190° C. from 20,000 to 400,000 kPa-sec, and a relaxation time at 190° C. from 225 to 3000 sec. These ethylene polymers can be produced by peroxide-treating a broad molecular weight distribution Ziegler-catalyzed resin, and can be used in large diameter, thick wall pipes and other end-use applications. 1. A process for preparing an ethylene polymer , the process comprising:contacting a base resin with a peroxide compound to produce the ethylene polymer, wherein the ethylene polymer is characterized by:{'sup': '3', 'a density of at least about 0.94 g/cm;'}{'sub': '21', 'a HLMI (I) in a range from about 4 to about 20 g/10 min;'}{'sub': '0', 'a zero-shear viscosity (η) at 190° C. in a range from about 20,000 to about 400,000 kPa-sec; and'}{'sub': 'η', 'a relaxation time (τ) at 190° C. in a range from about 225 to about 3000 sec.'}2. The process of claim 1 , wherein the base resin is characterized by:{'sup': '3', 'a density of at least about 0.94 g/cm;'}{'sub': '21', 'a HLMI (I) in a range from about 4 to about 25 g/10 min;'}a Mw in a range from about 200,000 to about 500,000 g/mol; anda ratio of Mw/Mn in a range from about 12 to about 40.3. The process of claim 2 , wherein: a Mn in a range from about 8,000 to about 20,000 g/mol;', 'a Mz in a range from about 1,000,000 to about 2,500,000 g/mol; and', {'sub': '5', 'a ratio of HLMI/Iin a range from about 20 to about 45; and'}], 'the base resin hasthe base resin comprises an ethylene homopolymer, an ethylene/1-butene copolymer, an ethylene/1-hexene copolymer, an ethylene/1-octene copolymer, or a combination thereof.4. The process of claim 3 , wherein:the base resin is produced using a Ziegler-Natta catalyst system; andthe base resin comprises a higher molecular weight component and a lower molecular weight component; wherein: [{'sup': '3', 'a density ...

METHOD OF PREPAING MICROPOROUS MEMBRANE, MICROPOROUS MEMBRANE, BATTERY SEPARATOR, AND SECONDARY BATTERY

A polyolefin microporous membrane has excellent strength, permeability and heat resistance, which is obtained by using UHMwPE and employing a sequential stretching system, and a production method of the microporous membrane. In producing a microporous membrane by using a primary material A having a molecular weight (Mw) of less than 1.0×10, a secondary material B having a molecular weight of 1.0×10or more, and a plasticizer, when the endothermic quantity of a mixture of the primary material and the plasticizer and the endothermic quantity of a mixture of the secondary material and the plasticizer are denoted as Q1 and Q2, respectively, respective resins are designed such that the ratio of endothermic quantity Q2 to endothermic quantity Q1 (endothermic quantity Q2/endothermic quantity Q1) becomes 1 or more over a temperature range of 110 to 118° C. 112-. (canceled)13. A method of producing a microporous membrane comprising:{'sup': 6', '6, '1) melt-kneading a primary material having a molecular weight (Mw) of less than 1.0×10, a secondary material having a molecular weight of 1.0×10or more, and a plasticizer;'}2) extruding the molten mixture obtained in step 1) through a spinneret to mold into a sheet shape;3) stretching the sheet obtained in step 2) by a sequential stretching method including a roll system or a tenter system; and4) extracting the plasticizer from the stretched film obtained in step 3) to produce a polyolefin microporous membrane,wherein, when an endothermic quantity of a mixture of the primary material and the plasticizer and an endothermic quantity of a mixture of the secondary material and the plasticizer are denoted as Q1 and Q2, respectively,a ratio of the endothermic quantity Q2 to the endothermic quantity Q1, (endothermic quantity Q2/endothermic quantity Q1), is 1 or more over a temperature range of 110 to 118° C.14. The method according to claim 13 , wherein claim 13 , when an endothermic quantity of a mixture of the primary material claim 13 ...

CATALYSTS FOR PREPARATION OF ULTRA HIGH MOLECULAR WEIGHT POLYETHYLENE (UHMWPE) AND PROCESS FOR PREPARATION THEREOF

The present invention relates to novel polymerization catalysts. More particularly, the present invention relates to a novel catalysts for the preparation of ultra high molecular weight polyethylene (UHMWPE) and process for preparation thereof. The present invention further relates to a process for the preparation of disentangled ultra high molecular weight polyethylene (dis-UHMWPE). 2. The novel olefin polymerization catalyst as claimed in claim 1 , wherein said transition metals are selected from titanium claim 1 , zirconium claim 1 , hafnium claim 1 , vanadium claim 1 , ytterbium and niobium.3. The novel olefin polymerization catalyst as claimed in claim 1 , wherein said compound of Formula (I) is selected from Bis[2-(((2 claim 1 ,3 claim 1 ,4 claim 1 ,5 claim 1 ,6-pentaflourophenyl)imino)methyl)benzenesulfonato]titanium(IV) Dichloride or Bis[2-(((4-methoxybenzylidene)amino)benzoate]Ti(IV) Dichloride.4. A process for the preparation of catalyst of Formula (I) as claimed in comprising the steps of:a) stirring the reaction mixture of sodium salt of aldehyde and amine in suitable solvent in presence of alkyl/aryl sulfonic acid followed by refluxing the reaction mixture at temperature ranging from 140 to 160° C. for the period ranging from 4 h to 6 h to obtain imine compound;b) adding organic solvent solution of metal halide to a stirred solution of compound of step (a) in suitable solvent at the temperature ranging from −78° C. to 80° C. followed by stirring the reaction mixture for the time period ranging from 18 to 20 h at the temperature ranging from 25° C. to 40° C. to obtain compound of Formula (I) wherein B is sulfonate group.5. The process as claimed in claim 4 , wherein said sodium salt of aldehyde is selected from 2-formylbenzenesulfonic acid claim 4 , sodium 2-formyl-6-methylbenzenesulfonate claim 4 , sodium 2-(tert-butyl)-6-formylbenzenesulfonate.6. The process as claimed in claim 4 , wherein said amine is aliphatic or aromatic; said amine is aromatic ...

PRODUCING POLYOLEFIN PRODUCTS

Catalyst systems and methods for making and using the same are described. A method includes selecting a catalyst blend using a blend polydispersity index (bPDI) map. The polydispersity map is generated by generating a number of polymers for at least two catalysts. Each polymer is generated at a different hydrogen to ethylene ratio. At least one catalyst generates a higher molecular weight polymer and another catalyst generates a lower molecular weight polymer. A molecular weight for each polymer is measured. The relationship between the molecular weight of the polymers generated by each of the catalysts and the ratio of hydrogen to ethylene is determined. A family of bPDI curves for polymers that would be made using a number of ratios of a blend of the at least two catalysts for each of a number of ratios of hydrogen to ethylene. A ratio for the catalyst blend of the catalysts that generates a polymer having a bPDI that matches a polymer fabrication process is selected, and the product specific polyolefin is made using the catalyst blend. 17.-. (canceled)8. A method of making a product specific polyolefin , comprising: generating a plurality of polymers for at least two catalysts, wherein each polymer is generated at a different hydrogen to ethylene ratio, wherein one of the at least two catalysts generates a higher molecular weight polymer and another of the at least two catalysts generates a lower molecular weight polymer;', 'measuring the molecular weight for each polymer;', 'determining the relationship between the molecular weight of the polymers generated by each of the at least two catalysts and the ratio of hydrogen to ethylene; and', 'generating a family of bPDI curves for polymers that would be made using a plurality of ratios of a blend of the at least two catalysts for each of a plurality of ratios of hydrogen to ethylene; and', 'selecting a ratio for the catalyst blend of the at least two catalysts that generates a polymer having a bpdi that matches a ...

Convertible Pressure Sensitive Adhesives Comprising Urethane (Meth)Acrylate Oligomers

Pressure sensitive adhesives which can be converted to form structural adhesives are described. The pressure sensitive adhesives include a blend of acrylic PSA resins in combination with one or more particular urethane (meth)acrylate oligomers. 1. A convertible pressure sensitive adhesive (PSA) composition , that upon conversion forms a structural adhesive , the PSA composition comprising:an acrylic PSA resin; (i) a polyisocyanate and a hydroxy functional (meth)acrylate,', '(ii) a monoisocyanate (meth)acrylate and a glycol,', '(iii) a diisocyanate, a glycol, and a hydroxy functional (meth)acrylate,, 'a urethane (meth)acrylate oligomer which is a reaction product of one ofwherein the urethane (meth)acrylate oligomer has a weight average molecular weight (Mw) of less than 3,000 g/mol.2. The PSA composition of wherein the acrylic PSA resin has a weight average molecular weight (Mw) in the range of from about 100 claim 1 ,000 g/mol to about 1 claim 1 ,000 claim 1 ,000 g/mol.3. The PSA composition of wherein prior to conversion to the structural adhesive claim 1 , the acrylic PSA resin has a glass transition temperature (Tg) in the range of from about −70° C. to about 30° C.4. The PSA composition of wherein the acrylic PSA resin includes an acid functional group.5. The PSA composition of wherein the acrylic PSA resin is present in the PSA claim 1 , prior to curing claim 1 , at a weight proportion in a range of from 30% to 95%.6. The PSA composition of wherein the acrylic PSA resin is formed using a controlled radical polymerization process.7. The PSA composition of wherein the acrylic PSA resin includes at least one functional group selected from the group consisting of hydroxyl claim 1 , carboxyl claim 1 , carbonyl claim 1 , carbonate ester claim 1 , isocyanate claim 1 , epoxy claim 1 , vinyl claim 1 , amine claim 1 , amide claim 1 , imide claim 1 , anhydride claim 1 , mercapto (thiol) claim 1 , acid claim 1 , acrylamide claim 1 , acetoacetyl groups claim 1 , alkoxy ...

METHOD OF PRODUCING POLYETHYLENE AND POLYETHYLENE THEREOF

A system and method of producing polyethylene, including: polymerizing ethylene in presence of a catalyst system in a reactor to form polyethylene, wherein the catalyst system includes a first catalyst and a second catalyst; and adjusting reactor conditions and an amount of the second catalyst fed to the reactor to control melt index (MI), density, and melt flow ratio (MFR) of the polyethylene. 116.-. (canceled)17. A polymer comprising: in a polymerization reactor via a polymerization catalyst system comprising a first catalyst and a second catalyst; and', 'by adjusting operating conditions of the polymerization reactor and an amount of the second catalyst fed to the polymerization reactor to control melt index (MI) and density of the polyethylene based on a target melt flow ratio (MFR) and a desired MWD and CD combination., 'polyethylene formed18. The polymer of claim 17 , wherein the polyethylene comprises a copolymer of ethylene and an alpha olefin comonomer having from 4 to 20 carbon atoms.19. The polymer of claim 18 , wherein the alpha olefin comonomer comprises 1-hexene.20. The polymer of claim 17 , wherein the polyethylene comprises a bimodal polyethylene with respect to molecular weight (Mw).21. The polymer of claim 17 , wherein the MI of the polyethylene is in a range from 0.1 to 5.0 dg/min.2249.-. (canceled) This application claims the benefit of U.S. Provisional Patent Applications having the following serial numbers: Ser. No. 61/938,466, by Ching-Tai Lue et al., filed Feb. 11, 2014 (2014U002.PRV); Ser. No. 61/938,472, by Ching-Tai Lue et al., filed Feb. 11, 2014 (2014U003.PRV); Ser. No. 61/981,291, by Francis C. Rix et al., filed Apr. 18, 2014 (2014U010.PRV); Ser. No. 61/985,151, by Francis C. Rix et al., filed Apr. 28, 2014 (2014U012.PRV); Ser. No. 62/032,383, by Sun-Chueh Kao et al., filed Aug. 1, 2014 (2014U018.PRV); Ser. No. 62/087,905, by Francis C. Rix et al., filed Dec. 5, 2014 (2014U035.PRV); Ser. No. 62/088,196, by Daniel P. Zilker, Jr. et al., ...

Acrylated and acylated or acetalized polyol as a biobased substitute for hard, rigid thermoplastic and thermoset materials

The present invention relates to a homopolymer, copolymer, block copolymer, and statistical copolymer comprising plural polyol monomeric units. The polyol monomeric units being acrylated and acylated or acetalized. The acrylated and acylated or acetalized polyol monomeric units have an average degree of acrylation which is 1 or more, but less than the number of the hydroxyl groups of the polyol and have an average degree of acylation or acetalization which is 1 or more, but less than the number of the hydroxyl groups of the polyol. The present invention also relates to a method of making the homopolymers, copolymers, block copolymers, and statistical copolymers, and using them in various applications, such as asphalt rubber modifiers, adhesives, or an additive in a fracking fluid for oil fracking.

Copolymer End-Functionalized With Functional Silane, Compositions Thereof And Related Processes

Disclosed herein are copolymers end-functionalized with functionalized silanes of specified structure, rubber compositions comprising the copolymer, and related processes for preparing the end-functionalized copolymer. The present disclosure also relates to tires having at least one component (e.g., a tread) containing the end-functionalized copolymer or a rubber composition thereof. The copolymer comprises 55-80% by weight of a conjugated diene monomer and 20-45% by weight of an aromatic vinyl monomer lacking any nitrogen substitution on its aromatic ring, wherein the total amount of conjugated diene monomer and aromatic vinyl monomer comprise 100% (of the total monomers in the copolymer), and the end-functionalization comprises at least one group having formula (I). 121-. (canceled)23. The end-functionalized copolymer of claim 22 , wherein the vinyl bond content in the butadiene portion of the copolymer is greater than 35%.24. The end-functionalized copolymer of claim 22 , wherein b is 0.25. The end-functionalized copolymer of claim 22 , wherein at least one of the following is met:a. the copolymer has a Mw of 100,000 to 800,000 g/mole (SBR standard); orb. the copolymer has a Tg of −20 to −70° C.26. The end-functionalized copolymer of claim 22 , wherein X is substituted with at least one group selected from C1-C10 alkyl groups claim 22 , C6 to C20 aryl groups claim 22 , C2 to C10 alkenyl groups claim 22 , C3-C10 non-terminal alkynyl groups claim 22 , each optionally containing one or more heteroatoms selected from O claim 22 , Si claim 22 , N claim 22 , S claim 22 , and P wherein any heteroatom lacks active hydrogen.27. The end-functionalized copolymer of claim 22 , wherein b is 1 and W comprises S.28. The end-functionalized copolymer of claim 22 , wherein X comprises a 5 or 6 membered aromatic ring containing 1 or 2 nitrogen claim 22 , optionally substituted with at least one substituent on the aromatic ring.29. The end-functionalized copolymer of claim 22 , ...

PRODUCING POLYOLEFIN PRODUCTS

Catalyst systems and methods for making and using the same. A method of methylating a catalyst composition while substantially normalizing the entiomeric distribution is provided. The method includes slurrying the organometallic compound in dimethoxyethane (DME), and adding a solution of RMgBr in DME, wherein R is a methyl group or a benzyl group, and wherein the RMgBr is greater than about 2.3 equivalents relative to the organometallic compound. After the addition of the RMgBr, the slurry is mixed for at least about four hours. An alkylated organometallic is isolated, wherein the methylated species has a meso/rac ratio that is between about 0.9 and about 1.2. 16.. (canceled)12. The catalyst composition of claim 7 , comprising a third catalyst.1326.-. (canceled) This application is a Divisional Application, which claims priority to U.S.C. § 371 National Stage application Ser. No. 15/118,307, filed Aug. 11, 2016 and published as U.S. Publication No. 2017-0183433 A1 on Jun. 29, 2017, which also claims priority to the following International Application Number PCT/US2015/015130, filed Feb. 10, 2015 and published as WO 2015/123171 on Aug. 20, 2015, which claims the benefit to the following U.S. Provisional Applications: 61/938,466, filed Feb. 11, 2014; 61/938,472, filed Feb. 11, 2014; 61/981,291, filed Apr. 18, 2014; 61/985,151, filed Apr. 28, 2014; 62/032,383, filed Aug. 1, 2014; 62/087,911, filed Dec. 5, 2014; 62/087,914, filed Dec. 5, 2014; 62/087,905, filed Dec. 5, 2014; 62/088,196, filed Dec. 5, 2014; the entire contents of which are incorporated herein by reference in its entirety.Ethylene alpha-olefin (polyethylene) copolymers are typically produced in a low pressure reactor, utilizing, for example, solution, slurry, or gas phase polymerization processes. Polymerization takes place in the presence of catalyst systems such as those employing, for example, a Ziegler-Natta catalyst, a chromium based catalyst, a metallocene catalyst, or combinations thereof.A number ...

HIGH MOLECULAR WEIGHT POLYMERS HAVING IMPROVED CRYSTALLIZATION

This disclosure relates to a high molecular weight polypropylene-based composition with high nucleation density and short crystallization half time. The composition may contain up to about 2 wt % ethylene. 1. A high molecular weight polypropylene-based composition , comprising from 0 to about 2% by weight ethylene;wherein the composition has a melt flow rate of about 1.0 g/10 min or lower; and{'sup': '2', 'wherein the composition has a nucleation density greater than 18,000 nuclei/cm, when nuclei are grown from a melt at 135° C. without the addition of an external nucleating agent, as measured by optical microscopy.'}2. The composition of claim 1 , wherein the composition comprises from about 0.1% to about 1.0% by weight ethylene.3. The composition of claim 1 , wherein the melt flow rate is about 1.0 g/10 min or less.4. The composition of claim 1 , wherein the nucleation density is greater than 100 claim 1 ,000 nuclei/cm.5. The composition of claim 1 , wherein the composition has a crystallization half time of about 24 minutes or shorter claim 1 , when nuclei are grown from a melt at 135° C. claim 1 , as measured by isothermal differential scanning calorimetry.6. The composition of claim 5 , wherein the crystallization half time is about 15 minutes or shorter.7. The composition of claim 1 , wherein the composition has a crystallization half time ranging from about 0.1 minute to about 0.9 minute claim 1 , when nuclei are grown from a melt at 120° C. claim 1 , as measured by isothermal differential scanning calorimetry.8. The composition of claim 7 , wherein the composition comprises from about 0.1% to about 1.0% by weight ethylene.9. A method for preparing the high molecular weight polypropylene-based composition of claim 1 , the method comprising:polymerizing propylene and ethylene, if present, with a Ziegler-Natta catalyst system to form the high molecular weight polypropylene-based composition; andextruding the high molecular weight polypropylene-based composition ...

SILVER-CONTAINING ELECTRICALLY-CONDUCTIVE COMPOSITIONS

An electrically-conductive composition essentially has (a) an electrically-conductive material consisting essentially of silver nanoparticles that have a d50 of less than or equal to 60 μm and a d90 of less than or equal to 500 μm; (b) particles having a Young's modulus that is different from the Young's modulus of the (a) electrically-conductive material by at least 10%, which (b) particles have a d50 of 500 nm to 300 μm and a polydispersity coefficient of less than or equal to 3; (c) a binder material that is non-electrically-conductive; and (d) a solvent medium in an amount of less than or equal to 90 weight %, based on the total composition weight, which solvent medium is at least 50 weight % water. The weight ratio of the (b) particles to the (a) electrically-conductive material is at least 0.01:1 and up to and including 7:1. 1. A composition consisting essentially of:(a) an electrically-conductive material consisting essentially of silver nanoparticles that have a d50 of less than or equal to 60 μm and a d90 of less than or equal to 500 μm;(b) particles having a Young's modulus that is different from the Young's modulus of the (a) electrically-conductive material by at least 10%, and which (b) particles have a d50 of at least 500 nm and up to and including 300 μm and a polydispersity coefficient that is less than or equal to 3;(c) a binder material that is non-electrically-conductive and comprises one or more polyurethanes, acrylate polymers, polyvinyl acetals, or polyacrylate precursors to an acrylate polymer; and(d) a solvent medium in an amount of less than or equal to 90 weight %, based on the total composition weight, which solvent medium is at least 50 weight % water;provided that:the weight ratio of the (b) particles to the (a) electrically-conductive material is at least 0.01:1 and up to and including 7:1, andwhen the composition is coated and dried on an insulating substrate, a resulting dried composition exhibits a resistivity of less than 10,000 ...

POLYPROPYLENE RESIN COMPOSITION FOR LASER WELDING AND MOLDED PRODUCT FOR VEHICLE INCLUDING THE SAME

Disclose herein a polypropylene resin composition for laser welding, which includes a base resin, a thermoplastic elastomer, an inorganic filler, and an organic pigment. The base resin includes an isotactic polypropylene resin and an atactic polypropylene resin. 1. A polypropylene resin composition for laser welding , comprising:a base resin;a thermoplastic elastomer;an inorganic filler; andan organic pigment,wherein the base resin comprises an isotactic polypropylene resin and an atactic polypropylene resin.2. The polypropylene resin composition of claim 1 , wherein the atactic polypropylene resin is a random copolymer obtained by polymerization of a homopolypropylene resin with one comonomer selected from a group consisting of propylene claim 1 , ethylene claim 1 , butylenes claim 1 , and octene claim 1 , or a block copolymer of polypropylene and ethylene-propylene rubber.3. The polypropylene resin composition of claim 1 , wherein the atactic polypropylene resin has a weight-average molecular weight of 1 claim 1 ,000 claim 1 ,000 g/mol to 2 claim 1 ,500 claim 1 ,000 g/mol.4. The polypropylene resin composition of claim 1 , wherein the polypropylene resin composition comprises the base resin in an amount of 40 to 90 parts by weight claim 1 , based on 100 parts by weight of the polypropylene resin composition.5. The polypropylene resin composition of claim 1 , wherein the base resin comprises an amount of 50 to 100 parts by weight of the atactic polypropylene resin claim 1 , based on 100 parts by weight of the isotactic polypropylene resin.6. The polypropylene resin composition of claim 1 , wherein the thermoplastic elastomer comprises an olefin copolymer of ethylene and α-olefin with a carbon number of 3 to 30 claim 1 , or a styrene-based copolymer.7. The polypropylene resin composition of claim 1 , wherein the polypropylene resin composition comprises the thermoplastic elastomer in an amount of 1 to 50 parts by weight claim 1 , based on 100 parts by weight of the ...

POLYPROPYLENE RESIN COMPOSITION AND ARTICLE PREPARED THEREFROM

A polypropylene resin composition may include an amount of 40 to 60 wt % of a polypropylene resin, an amount of 1 to 10 wt % of a polyethylene resin, an amount of 10 to 20 wt % of an olefin elastomer, and an amount of 1 to 20 wt % of a reinforcing material wherein all the wt % are based on the total weight of the polypropylene resin composition. Accordingly, a high gloss may be obtained without a coating process and moldability of the polypropylene resin may be obtained. Further provided is a molded article of an interior material or an exterior material of a vehicle manufactured by using the polypropylene resin composition. 1. A polypropylene resin composition comprising:an amount of 40 to 60 wt % of a polypropylene resin, based on the total weight of the polypropylene resin composition;an amount of 1 to 10 wt % of a polyethylene resin, based on the total weight of the polypropylene resin composition;an amount of 10 to 20 wt % of an olefin elastomer, based on the total weight of the polypropylene resin composition; andan amount of 1 to 20 wt % of a reinforcing material, based on the total weight of the polypropylene resin composition.2. The polypropylene resin composition of claim 1 , further comprising a pigment.3. The polypropylene resin composition of claim 2 , wherein the pigment is in an amount of 3 to 5 wt % based on the total weight of the polypropylene resin composition.4. The polypropylene resin composition of claim 1 , wherein the polypropylene resin comprises one or more materials selected from the group consisting of a first polypropylene having a melt index of 10 claim 1 , a second polypropylene having a melt index of 30 claim 1 , a third polypropylene having a melt index of 30 claim 1 , and a fourth polypropylene having a melt index of 60.5. The polypropylene resin composition of claim 4 , wherein the first polypropylene is in an amount of 20 to 25 wt % based on the total weight of the polypropylene resin composition and the third polypropylene is in ...

Catalyst composition including novel transition metal compound

The present invention relates to a catalyst composition including a transition metal compound represented by the following Formula 1; and one or more of a compound represented by the following Formula 2, a compound represented by the following Formula 3 and a compound represented by the following Formula 4. The catalyst composition according to the present invention has excellent copolymerization properties, and can be usefully used as a catalyst for a polymerization reaction for preparing an olefin-based polymer having a high molecular weight.

OLEFIN-BASED POLYMER

The present invention provides an olefin-based polymer which satisfies the following conditions of (1) to (4) and is capable of exhibiting improved impact strength without degrading mechanical properties such as tensile strength: 1. An olefin-based polymer satisfying the following conditions of (1) to (4):(1) density (d): from 0.850 to 0.910 g/cc,(2) melting index (MI, 190° C., 2.16 kg load conditions): from 0.1 to 100 g/10 min,(3) molecular weight distribution (MWD): from 1.5 to 3.0, and(4) two peaks are shown in a temperature range of −20° C. to 120° C. when taking measurements of temperature rising elution fractionation (TREF), and a relation of T(90)−T(50)≥60° C. is satisfied (where T(90) is a temperature at which 90 wt % of the olefin-based polymer is eluted, and T(50) is a temperature at which 50 wt % of the olefin-based polymer is eluted).2. The olefin-based polymer of claim 1 , wherein the olefin-based polymer has two peaks in a temperature range of −20° C. to 120° C. when taking measurements of temperature rising elution fractionation claim 1 , and T(90)−T(50) is from 70° C. to 110° C.3. The olefin-based polymer of claim 1 , wherein the olefin-based polymer has two peaks in a temperature range of −20° C. to 120° C. when taking measurements of temperature rising elution fractionation claim 1 , and a relation of T(90)≥70° C. is satisfied claim 1 , where T(90) is a temperature at which 90 wt % of the olefin-based polymer is eluted.4. The olefin-based polymer of claim 1 , wherein the olefin-based polymer has two peaks in a temperature range of −20° C. to 120° C. when taking measurements of temperature rising elution fractionation claim 1 , and T(90) is from 85° C. to 120° C. claim 1 , where T(90) is a temperature at which 90 wt % of the olefin-based polymer is eluted.5. The olefin-based polymer of claim 1 , wherein an accumulated elution amount of the olefin-based polymer via purging of less than −20° C. claim 1 , or in a temperature range of −20° C. to 10° C. ...

COMPOSITIONS CONTAINING LOW MOLECULAR WEIGHT PROPYLENE-BASED POLYMERS

The present disclosure provides a composition comprising: A) a propylene/C4-C10 alpha-olefin interpolymer; (i)) a total unsaturation per mole of propylene from 0.010% to 0.030%, (ii) a density from 0.855 g/cc to 0.890 g/cc, and (iii) a melt viscosity, at 177 C, from 500 cP to 200,000 cP. 1. A composition comprising:A) a propylene/C4-C10 alpha-olefin interpolymer comprising the following properties:(i) a total unsaturation per mole of propylene from 0.010 mole % to 0.030 mole %,(ii) a density from 0.855 g/cc to 0.890 g/cc, and(iii) a melt viscosity, at 177° C., from 500 cP to 200,000 cP.2. The composition of claim 1 , wherein the interpolymer further comprises an isotacticity (mm) greater than 0.85.3. The composition of claim 1 , further comprising the following:A) at least one tackifier;B) optionally, at least one oil;C) optionally at least one wax.4. The composition of claim 1 , wherein the propylene/C4-C10 alpha-olefin interpolymer has a g′ value (at Mn) greater than 0.98.5. The composition of claim 1 , wherein the propylene/C4-C10 alpha-olefin interpolymer has a weight average molecular weight (Mw) from 10 claim 1 ,000 to 500 claim 1 ,000 g/mole.6. The composition of claim 1 , wherein the propylene/C4-C10 alpha-olefin interpolymer has a melt viscosity claim 1 , at 177° C. claim 1 , from 500 cP to 50 claim 1 ,000 cP.7. The composition of claim 1 , wherein propylene/C4-C10 alpha-olefin interpolymer has a melt viscosity claim 1 , at 177° C. claim 1 , from 2000 cP to 10 claim 1 ,000 cP8. The composition of claim 1 , wherein the composition further comprises a propylene-based polymer wax that has a density 0.89 g/cc to 0.91 g/cc.9. The composition of claim 1 , wherein the composition has a melt viscosity claim 1 , at 150° C. claim 1 , from 500 cP to 50 claim 1 ,000 cP.10. An article comprising at least one component formed from the composition of . The present application claims the benefit of U.S. Provisional Application No. 62/196,342, filed on Jul. 24, 2015, and ...

METHOD FOR WELDING A POLYOLEFIN PLASTIC AND AN ADDITIONAL PLASTIC

The invention relates to a method for welding a polyolefin plastic and a plastic consisting of a polymer with at least one aromatic unit in the polymer main chain, using a primer which contains at least one polymer built from at least one monomer with at least one double bond. The invention also relates to correspondingly welded products. 1. A method for welding a polyolefin plastic and a second plastic containing a polymer with at least one aromatic unit in the polymer main chain , using a primer which contains at least one polymer built from at least one monomer with at least one double bond.2. The welding method according to claim 1 , characterized in that the polyolefin plastic is selected from the groups of polyethylene plastic claim 1 , in particular HD polyethylene claim 1 , MD polyethylene claim 1 , LD polyethylene claim 1 , UHMW polyethylene claim 1 , or LLD polyethylene plastic claim 1 , and polypropylene plastic claim 1 , preferably is a polypropylene plastic.3. The welding method according to claim 1 , characterized in that the polyolefin plastic contains a polyolefin polymer claim 1 , in particular a polyethylene and/or polypropylene to an extent of more than 90 wt. % claim 1 , in each case in relation to the total polyolefin plastic claim 1 , and/or the polyolefin plastic has molar masses (weight-average Mw) of greater than 10 claim 1 ,000 g/mol.4. The welding method according to claim 1 , characterized in that the second plastic is selected from polycarbonate plastics and plastics formed from vinyl aromatic polymers claim 1 , in particular the second plastic is a polycarbonate plastic formed from a bisphenol claim 1 , in particular is a polymer containing bisphenol A and/or bisphenol F claim 1 , or the second plastic is selected from SMMA claim 1 , SAN claim 1 , ASA claim 1 , ABS and AES plastics claim 1 , in particular is an ABS plastic claim 1 , or the second plastic is formed from a mixture of a polycarbonate and a vinyl aromatic polymer.5. The ...

METHOD FOR WELDING TWO POLYAMIDE PLASTICS

The present invention relates to a method for welding two polyamide plastics using a primer, the primer containing at least one polymer synthesized from at least one maleic anhydride or maleic anhydride derivative. The invention also relates to correspondingly welded products. 1. A method for welding two polyamide plastics using a primer , the primer containing at least one polymer synthesized from at least one maleic anhydride or maleic anhydride derivative.2. The welding method according to claim 1 , characterized in that the polyamide plastics are selected from the group consisting of polyamide 6 claim 1 , polyamide 6.6 claim 1 , polyamide 6.10 claim 1 , polyamide 6.12 claim 1 , polyamide 10.10 claim 1 , polyamide 11 claim 1 , polyamide 12 claim 1 , polyamide 10.12 claim 1 , polyphthalamides claim 1 , optically transparent polyamides or mixtures based on said polyamides claim 1 , in particular the first join partner is selected from the polyamide plastics from the group consisting of polyamide 6 claim 1 , polyamide 6.6 claim 1 , polyamide 6.10 claim 1 , polyamide 6.12 and/or the second join partner is selected from the polyamide plastics from the group consisting of polyamide 10.10 claim 1 , polyamide 11 claim 1 , polyamide 12.3. The welding method according to claim 1 , characterized in that the polymer is a copolymer consisting of at least one styrene or styrene derivative and at least one maleic anhydride or maleic anhydride derivative.4. The welding method according to claim 3 , characterized in that the at least one copolymer has a molar ratio of styrene to maleic anhydride of from 1:0.01 to 1:2 claim 3 , preferably 1:0.05 to 1:1 claim 3 , particularly preferably 1:0.1 to 1:0.3.5. The welding method according to claim 1 , characterized in that the at least one polymer has a maleic anhydride content of 0.1-50 wt. % claim 1 , in particular 0.5-40 wt. % claim 1 , preferably 4-30 wt. % claim 1 , particularly preferably 8-26 wt. % claim 1 , based on the polymer.6 ...

METHOD FOR WELDING POLYAMIDE AND POLY(METH)ACRYLATE PLASTICS

The invention relates to a method for welding a polyamide plastic and a poly(meth)acrylate—particularly a polymethyl methacrylate—plastic using a primer, said primer containing at least one copolymer synthesised from at least one styrene or styrene derivative and at least one maleic anhydride or maleic anhydride derivative. The invention also relates to correspondingly welded products. 1. A method for welding a polyamide plastics and a poly(meth)acrylate , in particular poly(methylmethacrylate) , plastics using a primer , wherein the primer contains at least one copolymer synthesized from at least one styrene or styrene derivative and at least one maleic anhydride or maleic anhydride derivative.2. The welding method according to claim 1 , characterized in that the polyamide plastics is selected from the group consisting of polyamide 6 claim 1 , polyamide 6.6 claim 1 , polyamide 6.10 claim 1 , polyamide 6.12 claim 1 , polyamide 10.10 claim 1 , polyamide 11 claim 1 , polyamide 12 claim 1 , polyamide 10.12 claim 1 , polyphthalamides claim 1 , optically transparent polyamides or mixtures based on said polyamides.3. The welding method according to claim 1 , characterized in that the poly(meth)acrylate plastics is made up of 50 to 100 wt. % claim 1 , in particular 70 to 100 wt. % methyl methacrylate claim 1 , and/or the poly(methylmethacrylate) plastics has molar masses (weight average Mw) of more than 50000 g/mol claim 1 , and/or the poly(meth)acrylate plastics is a poly(methylmethacrylate) plastics.4. The welding method according to claim 1 , characterized in that the at least one copolymer has a molar ratio of styrene to maleic anhydride of from 1:0.01 to 1:2 claim 1 , preferably 1:0.05 to 1:1 claim 1 , particularly preferably 1:0.1 to 1:0.3.5. The welding method according to claim 1 , characterized in that the at least one copolymer also further monomers incorporated by polymerization claim 1 , preferably a monomer selected from the group of acrylates and ...

Thermoplastic Resin Composition and Molded Article Using the Same

Disclosed are a thermoplastic resin composition including about 100 parts by weight of a base resin including (A-1) about 50 wt % to about 70 wt % of a polycarbonate resin and (A-2) about 30 wt % to about 50 wt % of a rubber modified vinyl-based copolymer, (B) about 1 to about 3 parts by weight of a cross-linkable styrene-acrylonitrile copolymer; and (C) about 1 to about 3 parts by weight of a methyl methacrylate-butyl acrylate copolymer, and a molded article using the same. 1. A thermoplastic resin composition , comprising:about 100 parts by weight of a base resin comprising:(A-1) about 50 to about 70 wt % of a polycarbonate resin, and(A-2) about 30 wt % to about 50 wt % of a rubber modified vinyl-based copolymer,(B) about 1 to about 3 parts by weight of a cross-linkable styrene-acrylonitrile copolymer; and(C) about 1 to about 3 parts by weight of a methyl methacrylate-butyl acrylate copolymer.2. The thermoplastic resin composition of claim 1 , wherein the rubber modified vinyl-based copolymer (A-2) comprises (A-2-1) an acrylonitrile-butadiene-styrene graft copolymer comprising a butadiene-based rubbery polymer having an average particle diameter of about 200 nm to about 400 nm and (A-2-2) an acrylonitrile-butadiene-styrene copolymer comprising a butadiene-based rubbery polymer having an average particle diameter of about 400 nm to about 1 claim 1 ,000 nm.3. The thermoplastic resin composition of claim 2 , wherein the acrylonitrile-butadiene-styrene graft copolymer (A-2-1) comprises:a core of the butadiene-based rubbery polymer, anda shell formed by graft-polymerization of a styrene-acrylonitrile copolymer on the core.4. The thermoplastic resin composition of claim 3 , wherein the core is included in an amount of about 40 wt % to about 50 wt % based on 100 wt % of the acrylonitrile-butadiene-styrene graft copolymer (A-2-1).5. The thermoplastic resin composition of claim 2 , wherein the acrylonitrile-butadiene-styrene copolymer (A-2-2) comprises:a dispersion phase ...

METHOD FOR TREATING A POLYMER WORKPIECE FOR USE IN A JOINT IMPLANT

The present invention provides a method for treating a polymer workpiece () for use in a joint implant. It comprises the steps of placing the polymer workpiece in an explosion chamber, introducing a combustible gas mixture into the explosion chamber and igniting the combustible gas mixture. Igniting the gas mixture in the explosion chamber produces a temperature that lies above the melting point of a polymer of the polymer workpiece. 19-. (canceled)111. Method according to claim 10 , where the polymer workpiece () comprises a thermoplastic claim 10 , preferably polyethylene claim 10 , and more preferably UHMWPE.12. Method according to claim 10 , where the temperature produced by the explosion lies within a range of 1500° C. to 2800° C. claim 10 , and preferably within a range of 2000° C. to 2500° C.13. Method according to claim 11 , where the temperature produced by the explosion lies within a range of 1500° C. to 2800° C. claim 11 , and preferably within a range of 2000° C. to 2500° C.14. Method according to claim 10 , where the gas mixture to be exploded is introduced at a pressure of 1.5 to 2.1 bar claim 10 , and preferably at 1.7 to 1.9 bar.15. Method according to claim 12 , where the gas mixture to be exploded is introduced at a pressure of 1.5 to 2.1 bar claim 12 , and preferably at 1.7 to 1.9 bar.16. Method according to claim 13 , where the gas mixture to be exploded is introduced at a pressure of 1.5 to 2.1 bar claim 13 , and preferably at 1.7 to 1.9 bar.171. Method according to claim 10 , where the polymer workpiece () is pre-treated by means of machining.181. Method according to claim 11 , where the polymer workpiece () is pre-treated by means of machining.191. Method according to claim 16 , where the polymer workpiece () is pre-treated by means of machining.20. Method according to claim 10 , where the temperature produced by exploding the gas mixture of at least 1500° C. claim 10 , preferably of at least 2000° C. claim 10 , is maintained over a period of ...

High-stiffness and energy-reducing polypropylene for foaming

The present invention relates to a polypropylene having excellent stiffness and achieving energy reduction during foaming.

POLYPROPYLENE-BASED COMPOSITE MATERIAL

The present invention provides a polypropylene-based composite material capable of exhibiting excellent strength properties and impact strength properties, particularly, markedly improved impact strength properties at a low temperature without using a separate additive by including (A) polypropylene, and (B) an olefin-based polymer which satisfies the conditions of the following (b1) to (b4): (b1) density (d): from 0.850 to 0.910 g/cc, (b2) melt index (MI, 190° C., 2.16 kg load conditions): from 0.1 g/10 min to 100 g/10 min, (b3) molecular weight distribution (MWD): from 1.5 to 3.0, and (b4) i) two peaks are shown in a temperature range of −20° C. to 120° C. when taking measurements of temperature rising elution fractionation, and ii) a relation of T(90)−T(50)≥60° C. is satisfied (where T(90) is a temperature at which 90 wt % of the olefin-based polymer is eluted, and T(50) is a temperature at which 50 wt % of the olefin-based polymer is eluted). 1. A polypropylene-based composite material comprising: (A) polypropylene; and (B) an olefin-based polymer satisfying the following conditions of (b1) to (b4):(b1) density: from 0.850 g/cc to 0.910 g/cc,(b2) melt index (190° C., 2.16 kg load conditions): from 0.1 g/10 min to 100 g/10 min,(b3) molecular weight distribution: from 1.5 to 3.0, and(b4) i) two peaks are shown in a temperature range of −20° C. to 120° C. when taking measurements of temperature rising elution fractionation (TREF), and ii) a relation of T(90)−T(50)≥60° C. is satisfied (where T(90) is a temperature at which 90 wt % of the olefin-based polymer is eluted, and T(50) is a temperature at which 50 wt % of the olefin-based polymer is eluted).2. The polypropylene-based composite material of claim 1 , wherein the olefin-based polymer has two peaks in a temperature range of −20° C. to 120° C. when taking measurements of temperature rising elution fractionation claim 1 , and a relation of T(90)≥70° C. is satisfied claim 1 , where T(90) is a temperature at which ...

POLYMER COMPOUND, METHOD FOR PREPARING MODIFIED AND CONJUGATED DIENE-BASED POLYMER USING THE SAME, AND MODIFIED AND CONJUGATED DIENE-BASED POLYMER

The present invention relates to a polymer compound used as a polymer modifier, a conjugated diene-based polymer including a functional group derived therefrom, and a method for preparing a modified and conjugated diene-based polymer using the polymer compound. A rubber modifier compound obtained therefrom is used as a modifier for rubber, particularly, as a modifier of a conjugated diene-based polymer and is bonded to a chain of the conjugated diene-based polymer to easily introduce a functional group having affinity with a filler. 2. The polymer compound of claim 1 , wherein in Formula 1 claim 1 ,{'sub': 1', '1-10, 'Xis Calkyl, ester or alkylaryl substituted with halogen.'}3. The polymer compound of claim 1 , wherein in Formula 1 claim 1 ,{'sub': 2', '6-10', '1-3', '3-10, 'Xis Caryl unsubstituted or substituted with Calkyl or Ccycloalkyl.'}7. The polymer compound of claim 1 , wherein the polymer compound is a modifier for a conjugated diene-based polymer.10. The modified and conjugated diene-based polymer of claim 8 , wherein the polymer comprises from 100 ppm to 10 claim 8 ,000 ppm of a silane group based on a total amount of the polymer.11. The modified and conjugated diene-based polymer of claim 8 , wherein the polymer comprises 40 wt % or less of a derived unit from an aromatic vinyl-based monomer.12. The modified and conjugated diene-based polymer of claim 8 , wherein the polymer has a number average molecular weight of 10 claim 8 ,000 g/mol to 1 claim 8 ,000 claim 8 ,000 g/mol.15. The method for preparing the modified and conjugated diene-based polymer of claim 13 , wherein the organo-alkali metal compound is used in a molar ratio of 0.01 mmol to 10 mmol based on 100 g of a total of the monomers.16. The method for preparing the modified and conjugated diene-based polymer of claim 13 , wherein the polymerizing in step 1) is conducted by further adding a polar additive.17. The method for preparing the modified and conjugated diene-based polymer of claim 16 , ...

Polymerization Process

A process including contacting one or more monomers, at least one catalyst system, and a condensing agent including propane and isobutane under polymerizable conditions to produce a polyolefin polymer is provided. 1. A polymerization process , the process comprising contacting one or more monomers , at least one catalyst system , and a condensing agent , wherein a majority of the condensing agent comprises propane and isobutane , under polymerizable conditions to produce a polyolefin polymer.2. The process of claim 1 , wherein the production rate of the polyolefin polymer is at least 5% greater than the same process polymerizing with a condensing agent consisting essentially of isopentane.3. The process of claim 1 , wherein the polyolefin density (ASTM D1505) is ≤0.912 g/cmand the space time yield is >14.0 lb/ft/hr (224. kg/m/hr).4. The process of claim 1 , wherein the space time yield is >17.5 lb/ft/hr (280. kg/m/hr).5. The process of claim 1 , wherein the production rate when producing a polyolefin polymer having density ≤0.912 g/cmis ≥80% of the production rate when producing a polyolefin polymer having a density ≥0.918 g/cm claim 1 , density measured by ASTM D1505.6. The process of claim 1 , wherein the reactor pressure is from 20 to 29 barg.7. The process of claim 1 , wherein the reactor pressure is from 20 to 26 barg.8. The process of claim 1 , wherein the reactor pressure is from 20 to 25 barg.9. The process of claim 1 , wherein the molar ratio of isobutane to propane in the condensing agent is from 0.1 to 10.10. The process of claim 1 , wherein the condensing agent comprises ≥10 mol % isobutane and <90 mol % propane.11. The process of claim 1 , wherein the condensing agent comprises ≥10 mol % propane and <90 mol % isobutane.12. The process of claim 1 , wherein the condensing agent further comprises at least one additional C-Ccondensing agent.13. The process of claim 11 , wherein the at least one additional C-Ccondensing agent comprises n-butane claim 11 , n- ...

HIGH DENSITY ROTOMOLDING RESIN

The present disclosure provides high density polyethylene resins having good low temperature impact resistance. The resins are suitable for use in rotomolding application for large parts. The resin is a bi- or trimodal resin produced using solution phase polymerization in the presence of a single site catalyst. 116-. (canceled)17. A polyethylene resin comprising from 0.7 to 1.2 weight % of 1-octene and the balance ethylene , having a density from 0.948 to 0.953 g/cc , a melt index determined according to ASTM1238 under a load of 2.16 kg at a temperature of 190° C. (I) from 1.0 to 1.5 g/10 minutes; a melt index determined according to ASTM1238 under a load of 21.6 kg at a temperature of 190° C. (I) from 32 to 55 g/10 minutes; a weight average molecular weight (Mw) determined by gel permeation chromatography from 95 ,000 to 120 ,000; a number average molecular weight determined by gel permeation chromatography (GPC) from 20 ,000 to 40 ,000; a z average molecular weight (Mz) from 240 ,000 to 360 ,000; an Mw/Mn from 2.7 to 4.3; an Mz/Mw from 2.5 to 3.5; and having a CBDI (50) from 80 to 95 , the molecular weight distribution determined by GPC of said polymer being deconvoluted into at least two components comprising:from 20 to 40 weight % of a first component having a calculated weight average molecular weight (Mw) being from 200,000 to 250,000; a calculated number average molecular weight from 90,000 to 140,000; a z average molecular weight 390,000 to 520,000 and an estimated density from 0.921 to 0.930 g/cc;from 60 to 80 weight % of a second component having a calculated weight average molecular weight (Mw) being from 20,000 to 57,000; a calculated number average molecular weight (Mn) from 10,000 to 27,000; a z average molecular weight from 30,000 to 72,000 and an estimated density from 0.948 to 0.953 g/cc, provided that the difference in calculated density between component two and component one is less than 0.030 g/cc.18. The polyethylene resin according to having a ...

HIGH PERFORMANCES MULTIMODAL ULTRA HIGH MOLECULAR WEIGHT POLYETHYLENE

The present invention relates to a reactor system for a multimodal polyethylene polymerization process, comprising; (a) a first reactor; (b) a hydrogen removal unit arranged between the first reactor and a second reactor comprising at least one vessel connected with a depressurization equipment, preferably selected from vacuum pump, compressor, blower, ejector or a combination thereof, the depressurization equipment allowing to adjust an operating pressure to a pressure in a range of 100-200 kPa (abs); (c) the second reactor; and (d) a third reactor and use thereof as a sheet. 1. A reactor system for a multimodal polyethylene polymerization process , comprising;(a) a first reactor;(b) a hydrogen removal unit arranged between the first reactor and a second reactor comprising at least one vessel connected with a depressurization equipment, preferably selected from vacuum pump, compressor, blower, ejector or a combination thereof, the depressurization equipment allowing to adjust an operating pressure to a pressure in a range of 100-200 kPa (abs);(c) the second reactor; and(d) a third reactor.2. The reactor system according to claim 1 , wherein the depressurization equipment allows to adjust the operating pressure in the hydrogen removal unit to a pressure in the range of 103-145 kPa (abs) claim 1 , preferably 104-130 kPa (abs) claim 1 , most preferably 105 to 115 kPa (abs).3. The reactor system according to claim 1 , wherein the hydrogen removal unit further contains a stripping column for the separation of hydrogen and a liquid diluent.4. A process for producing a multimodal polyethylene composition in the reactor system according to claim 1 , comprising;(a) polymerizing ethylene in an inert hydrocarbon medium in the first reactor in the presence of a catalyst system, selected from Ziegler-Natta catalyst or metallocene, and hydrogen in an amount of 0.1-95% by mol with respect to the total gas present in the vapor phase in the first reactor to obtain a low molecular ...

PROCESS FOR PRODUCING HIGH MOLECULAR WEIGHT POLYETHYLENE

In a process for producing polyethylene, ethylene is contacted under polymerization conditions with a slurry of a catalyst composition comprising a particulate support and a Group 4 metal complex of a phenolate ether ligand carried by the support and present in an amount so as to provide about 0.1 to about 35 μιηo of Group 4 metal per gram of the support. The resultant polyethylene has a molecular weight of at least 3×105 g/mol as determined by ASTM 4020, an average particle size, d50, of less 300 microns, preferably about 100 to 250 microns, and a span, log(d/d), of less than 0.4. 1. A process for producing polyethylene , the process comprising:(a) providing a catalyst composition comprising a particulate support and a Group 4 metal complex of a phenolate ether ligand carried by the support and present in an amount so as to provide 0.1 to 35 μmol of Group 4 metal per gram of the support; and{'sup': '5', 'sub': 10', '90', '10, '(b) contacting ethylene with a slurry of the catalyst composition under polymerization conditions such as to produce polyethylene having a molecular weight of at least 3×10g/mol as determined by ASTM 4020, an average particle size, d50, of less 300 microns, preferably 100 to 250 microns, and a span, log(d/d), of less than 0.4.'}2. The process of wherein the Group 4 metal loading is from 1 to 30 μmol/gram of the support.3. The process of wherein the Group 4 metal loading is from 2 to 25 μmol/gram of the support.4. The process of wherein the particulate support has an average particle size claim 1 , d50 claim 1 , of less than 58 microns.5. The process of wherein the particulate support has an average particle size claim 1 , d50 claim 1 , of less than 50 microns.6. The process of wherein the particulate support has an average particle size claim 1 , d50 claim 1 , of less than 30 microns.7. The process of wherein the particulate support has an average particle size claim 1 , d50 claim 1 , of about 4 to about 25 microns.8. The process of wherein ...

PREPARATION METHOD OF SUPERABSORBENT POLYMER AND SUPERABSORBENT POLYMER PREPARED THEREBY

A preparation method of a superabsorbent polymer, and a superabsorbent polymer prepared thereby are provided. The preparation method of the superabsorbent polymer according to the present disclosure prevents polymer particles from being broken or the surface thereof from being damaged during preparation and handling of the superabsorbent polymer, thereby providing a superabsorbent polymer having excellent absorption properties and permeability. 2. The preparation method of the superabsorbent polymer of claim 1 , wherein the polycarboxylic acid-based copolymer is mixed in an amount of 0.001 parts by weight to 5 parts by weight claim 1 , based on 100 parts by weight of the surface-crosslinked polymer.3. The preparation method of the superabsorbent polymer of claim 1 , wherein the polycarboxylic acid-based copolymer has a weight average molecular weight of 500 to 1 claim 1 ,000 claim 1 ,000.4. The preparation method of the superabsorbent polymer of claim 1 , wherein the drying of the water-containing gel polymer is performed at a temperature of 120° C. to 250° C.5. The preparation method of the superabsorbent polymer of claim 1 , further comprising pulverizing the water-containing gel polymer to have a particle size of 1 mm to 10 mm claim 1 , before drying the water-containing gel polymer.6. The preparation method of the superabsorbent polymer of claim 1 , wherein the pulverizing of the dried polymer is performed such that the pulverized polymer has a particle size of 150 μm to 850 μm.7. The preparation method of the superabsorbent polymer of claim 1 , wherein the surface crosslinking of the pulverized polymer is performed at a temperature of 100° C. to 250° C.8. The preparation method of the superabsorbent polymer of claim 1 , wherein the surface crosslinking is performed by reacting one or more surface crosslinking agents selected from the group consisting of ethylene glycol diglycidyl ether claim 1 , polyethylene glycol diglycidyl ether claim 1 , glycerol ...

NANOCLAY FILLED BARRIER ADHESIVE COMPOSITIONS

A barrier adhesive composition comprising a resin system and organically modified nanoclay. The resin system comprises (a) a first polyisobutylene resin having a viscosity average molecular weight of about 300,000 to about 500,000 g/mol, (b) a second polyisobutylene resin having a viscosity average molecular of about 700,000 to about 900,000 g/mol and (c) tackifier. 1. A barrier adhesive composition comprising a resin system and organically modified nanoclay , the resin system comprising:(a) a first polyisobutylene resin having a viscosity average molecular weight of about 300,000 to about 500,000 g/mol;(b) a second polyisobutylene resin having a viscosity average molecular of about 700,000 to about 900,000 g/mol; and(c) tackifier.20. The barrier adhesive composition of claim wherein the resin system comprises about 15 to about 35 wt. % of the first polyisobutylene resin relative to the total weight of the resin system.3. The barrier adhesive composition of wherein the resin system comprises about 40 to about 60 wt. % of the second polyisobutylene resin relative to the total weight of the resin system.4. The barrier adhesive composition of wherein the resin system comprises about 15 to about 35 wt. % of the tackifier relative to the total weight of the resin system.5. The barrier adhesive composition of comprising about 2 to about 15 wt. % of the nanoclay relative to the total weight of the resin system and the nanoclay.6. The barrier adhesive composition of wherein the tackifier is a hydrogenated petroleum resin.7. The barrier adhesive composition of further comprising solvent.8. The barrier adhesive composition of comprising about 70 to about 90 wt. % of solvent relative to the total weight of the barrier adhesive composition.9. The barrier adhesive composition of wherein the solvent comprises heptane claim 7 , toluene or a combination thereof.10. The barrier adhesive composition of wherein the solvent comprises heptane.11. The barrier adhesive composition of ...

Dual Catalyst System for Producing LLDPE Copolymers with Improved Processability

Disclosed herein are ethylene-based polymers generally characterized by a density from 0.89 to 0.93 g/cm, a ratio of Mw/Mn from 3 to 6.5, a Mz from 200,000 to 650,000 g/mol, a CY-a parameter at 190° C. from 0.2 to 0.4, and a reverse short chain branching distribution. The ATREF profile of these polymers can have a high temperature peak from 92 to 102° C., and a low temperature peak from 18 to 36° C. less than that of the high temperature peak. These polymers can have comparable physical properties to that of a metallocene-catalyzed LLDPE, but with improved processability, shear thinning, and melt strength, and can be used in blown film and other end-use applications. 118-. (canceled)19. An olefin polymerization process , the process comprising contacting a catalyst composition with an olefin monomer and an olefin comonomer in a polymerization reactor system under polymerization conditions to produce an olefin polymer , wherein:the catalyst composition comprises a half-metallocene titanium compound, a bridged metallocene compound, an activator, and a co-catalyst; and [{'sup': '3', 'a density in a range from about 0.89 to about 0.93 g/cm;'}, 'a ratio of Mw/Mn in a range from about 3 to about 6.5;', 'a Mz in a range from about 200,000 to about 650,000 g/mol;', 'a CY-a parameter at 190° C. in a range from about 0.2 to about 0.4; and', "a number of short chain branches (SCB's) per 1000 total carbon atoms of the polymer at Mz that is greater than at Mn."], 'the olefin polymer is characterized by20. The process of claim 19 , wherein:the olefin monomer comprises ethylene;{'sub': 3', '10, 'the olefin comonomer comprises a C-Calpha-olefin; and'}the polymerization reactor system comprises a slurry reactor, a gas-phase reactor, a solution reactor, or a combination thereof21. The process of claim 20 , wherein the olefin polymer is an ethylene polymer having the following polymer fractions in an ATREF test:from about 0.1 to about 8 wt. % of the polymer eluted below a temperature ...

HYDROPHILIC SUBSTRATE

The present invention provides a hydrophilic substrate including a hydrophilic polymer layer having a smooth surface and formed of a special polymer (hydrophilic polymer). Included is a hydrophilic substrate including on its surface a hydrophilic polymer layer formed of a hydrophilic polymer having a number average molecular weight of 40,000 or more. 1. A hydrophilic substrate , comprising on its surface a hydrophilic polymer layer formed of a hydrophilic polymer having a number average molecular weight of 40 ,000 or more.2. The hydrophilic substrate according to claim 1 ,wherein the hydrophilic substrate is obtained by surface coating with a solution of the hydrophilic polymer.4. The hydrophilic substrate according to claim 1 ,wherein the hydrophilic polymer layer has a thickness of 10 to 1000 nm. The present invention relates to a hydrophilic substrate including a layer formed of a hydrophilic polymer having a predetermined molecular weight.It has been proposed to coat the surface of substrates with special polymers in order to prepare devices for capturing specific cells (e.g. blood cells, cancer cells present in blood or biological fluid) from blood or biological fluid.However, it is difficult for some special polymers to form a smooth surface by coating. Since the surface smoothness of the substrates affects the ability to capture specific cells, there is a need for substrates having a smooth surface with excellent properties, e.g. in terms of ability to capture specific cells such as cancer cells.Patent Literature 1: JP 2005-523981 TThe present invention aims to solve the problem and provide a hydrophilic substrate including a hydrophilic polymer layer having a smooth surface and formed of a special polymer (hydrophilic polymer).The present invention relates to a hydrophilic substrate, including on its surface a hydrophilic polymer layer formed of a hydrophilic polymer having a number average molecular weight of 40,000 or more.Preferably, the hydrophilic ...

BIOMIMETIC SYNTHETIC RUBBER AND METHODS FOR CONTROLLING ITS PHYSICAL PROPERTIES THROUGH BACKBONE DOUBLE BOND STEREOCHEMISTRY BY MONOMER SELECTION AND END GROUP MODIFICATION

In various embodiments, the present invention provides a strong, synthetic elastomer materials (and related methods for making same) with mechanical properties that are controlled by the stereochemically-defined double bonds within their backbone, yet have physical properties that are derived from monomer selection and defined, modifiable, chain end groups. The use of the organocatalyzed, stereospecific addition of thiols to activated alkynes, affords isolated high molar mass materials (>100 kDa) via step-growth polymerization with high levels of cis- or trans-double bond content. Furthermore, in various aspects of the present invention, it has been found that changing the monomer composition and chain end groups provides additional control over the materials' physical properties to provide more efficient compounding with polar additives. Using this approach to elastomer synthesis, further end group modification and toughening through various vulcanization strategies are also possible. 1. A thiol-yne elastomer composition comprising the residue of a multi-functional alkyne monomer and the residue of a multi-functional thiol monomer , said thiol-yne elastomer composition having a cis-trans double bond ratio of from 99:1 to about 1:99.5. The thiol-yne elastomer of having a weight average molecular mass (M) of from about 1 claim 1 ,000 Da or more to about 1 claim 1 ,000 claim 1 ,000 Da or less.6. The thiol-yne elastomer composition of having a glass transition temperature (T) of from about −50° C. or more to about 10° C. or less.7. The thiol-yne elastomer composition of having an elastic modulus (E) of from about 1.0 MPa to about 90 MPa.8. The thiol-yne elastomer composition of having an elongation at break (Ð) of from 50% or more to 3000% or less.9. The thiol-yne elastomer composition of having an molecular mass distribution (Ð) of from about 1.5 or more to about 5.0 or less.10. The thiol-yne elastomer composition of further comprising one or more functional end ...

A preparation method of itaconate-butadiene bio-based engineering rubber

A preparation method of itaconate-butadiene bio-based engineering rubber belongs to the bio-based engineering rubber area. The bio-based engineering rubber of the present disclosure is formed through chemical crosslinking of copolymers, which are formed by polymerization of itaconate and butadiene emulsion. The number average molecular weight of the itaconate-butadiene copolymer is about 53000-1640000, and weight-average molecular weight is about 110000-2892000. Itaconate-butadiene copolymers are formed by polymerization of itaconate and butadiene emulsion, then and chemical crosslinking of the copolymer is performed to form bio-based engineering rubber using a traditional sulfur vulcanizing system. The bio-based engineering rubber of the present disclosure has high molecular weights as well as lower glass-transition temperatures and can be vulcanized using the traditional sulfur vulcanizing system. The bio-based engineering rubber of the present disclosure has same physic-mechanical property as well as processability as compared to rubber prepared using conventional techniques and may be used for manufacturing tire treads and conveyor belts. 110.-. (canceled)12. The method of claim 11 , wherein Rand Rare n-butyl claim 11 , n-amyl or isoamyl.13. The method of claim 11 , wherein the emulsifier comprises at least one of disproportionate sodium abietate claim 11 , disproportionated potassium rosinate claim 11 , sodium aliphatate soap claim 11 , potassium aliphatate soap claim 11 , sodium dodecyl sulfate claim 11 , sulfate sodium dodecyl benzene sulfonate claim 11 , or sodium dodecyl sulfonate.14. The method of claim 11 , wherein the electrolyte comprises at least one of potassium chloride claim 11 , potassium phosphate claim 11 , EDTA claim 11 , TAOM-L claim 11 , phosphate claim 11 , or potassium hydroxide.15. The method of claim 11 , wherein the activator is a mixture of sodium formaldehyde sulfoxylate and EDTA ferric or a mixture of sodium formaldehyde sulfoxylate ...

Methods and Systems for Operating a High Pressure Ethylene Polymerization Unit

Disclosed are high-pressure polymerization methods and systems using optimized operation sequence logic established at least partly from an analysis of a database containing data of previous operations. The optimized operation sequence logic and collected current process and system data are used to automate the operation of a high pressure ethylene polymerization process and unit.

PERFLUORINATED IONOMER NANOPARTICLE DISPERSION SOLUTION, AND PREPARATION METHOD THEREFOR

Disclosed are: an ionomer nanoparticle dispersion solution formed by dispersing a perfluorinated ionomer having an ion conductive functional group in a solvent mixture including water and an alcohol, and carrying out a reaction under a supercritical condition; and a preparation method thereof. The ionomer nanoparticle dispersion solution has a high azeotropic mixture content in a continuous phase, which is a liquid phase, so as to readily remove a solvent therefrom, and thus a product using the ionomer nanoparticle dispersion solution can be readily fabricated and preparation costs can be reduced. In addition, uniformity of the product is improved because a perfluorinated ionomer having various ion conductive functional groups and various salts thereof is nano-dispersed, in a narrow molecular weight distribution, in the ionomer nanoparticle dispersion solution. 1. An ionomer nanoparticle dispersion solution comprising:a continuous-phase ionomer mixed solution comprising water and alcohols; andionomer nanoparticles prepared with a perfluorinated ionomer which is conventionally insoluble in both water and alcohols,wherein an azeotropic mixture content in the ionomer mixed solution is 20 wt % or more.2. The ionomer nanoparticle dispersion solution of claim 1 , wherein the azeotropic mixture content is 25 wt % to 50 wt % in the ionomer mixed solution.3. The ionomer nanoparticle dispersion solution of claim 1 , wherein the ionomer has one or more ion conductive functional groups selected from a group consisting of sulfonic acid claim 1 , a sulfonate claim 1 , carboxylic acid claim 1 , a carboxylate claim 1 , and a fluorosulfonyl.4. The ionomer nanoparticle dispersion solution of claim 3 , wherein the sulfonate has lithium sulfonate claim 3 , sodium sulfonate claim 3 , potassium sulfonate claim 3 , calcium sulfonate claim 3 , magnesium sulfonate claim 3 , ammonium sulfonate claim 3 , or alkylammonium sulfonate.5. The ionomer nanoparticle dispersion solution of claim 3 , ...

Polyethylene formulations for large part blow molding applications

In various embodiments, a polyethylene formulation has a density of greater than 0.940 g/cm 3 when measured according to ASTM D792, and a high load melt index (I 21 ) of 1.0 g/10 min to 10.0 g/10 min when measured according to ASTM D1238 at 190° C. and a 21.6 kg load. Moreover, the polyethylene formulation has a peak molecular weight (M p(GPC) ) of less than 50,000 g/mol, a number average molecular weight (M n(GPC) ) of less than 30,000 g/mol, and a weight fraction (w1) of molecular weight (MW) less than 10,000 g/mol of less than or equal to 10.5 wt %, as determined by Gel Permeation Chromatography (GPC). Articles made from the polyethylene formulation, such as articles made by blow molding processes are also provided.