БЛОК-СОПОЛИМЕРЫ ЭТИЛЕНА/α-ОЛЕФИНОВ

Изобретение относится к блок-сополимерам этилена/α-олефинов. Блоксополимер этилена/α-олефина, содержащий полимеризованные звенья этилена и α-олефина, характеризуется средним показателем блочности более 0,1 и до приблизительно 1,0 и молекулярно-массовым распределением, Mw/Mn, от 1,3 до примерно 3,5. Кроме того, блок-сополимер этилена/α-олефина альтернативно характеризуется наличием, по меньшей мере, одной фракции, полученной фракционированием при элюировании с повышением температуры ("TREF"), где фракция обладает показателем блочности более приблизительно 0,3 и до приблизительно 1,0. Распределение таких показателей блочности оказывает влияние на общие физические свойства блок-интерполимеров. Подбор условий полимеризации позволяет изменять распределение показателей блочности, тем самым предоставляя возможность проектирования желательных полимеров. Такие блоксополимеры имеют множество конечных применений, например, их можно использовать для получения полимерных смесей, волокон, пленок, литых ...

СПОСОБ ПЕРЕХОДА

FIELD: chemistry. SUBSTANCE: method includes the stages of: a) conducting the first polymerisation reaction in the reactor using the first catalyst system for the polymerization of the first polymer, b) stopping the first polymerisation reaction and removing at least the greater part of the polymer from the reactor, c) introducing a seed layer into the reactor, containing not less than 50 ppm of contaminants, where during storage the content of contaminants in the seed layer was maintained equal to not less than 50 ppm, but less than 500 ppm of contaminants, d) processing the seed layer in the reactor to reduce the amount of contaminants, and e) conducting the second polymerisation reaction in the reactor to receive the second polymer. EFFECT: method allows to obtain a conditioned polymer product immediately after the start of the second reaction. 21 cl, 4 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 643 817 C2 (51) МПК C08F 2/34 (2006.01) C08F 295/00 (2006.01) C08F 210/16 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C08F 2/34 (2006.01); C08F 2/01 (2006.01); C08F 2/42 (2006.01); C08F 210/16 (2006.01); C08F 295/00 (2006.01) (21)(22) Заявка: 2015129347, 13.12.2013 13.12.2013 (73) Патентообладатель(и): ИНЕОС ЮРОУП АГ (CH) Дата регистрации: 06.02.2018 20040167299 A1, 26.08.2004. RU 2292356 C2, 27.01.2007. WO2010009860 A1, 28.01.2010. 18.12.2012 EP 12197874.6; 18.12.2012 EP 12197833.2 (43) Дата публикации заявки: 25.01.2017 Бюл. № 3 (45) Опубликовано: 06.02.2018 Бюл. № 4 C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 20.07.2015 (86) Заявка PCT: EP 2013/076531 (13.12.2013) 2 6 4 3 8 1 7 (87) Публикация заявки PCT: R U 2 6 4 3 8 1 7 (56) Список документов, цитированных в отчете о поиске: US 20040127655 A1, 01.07.2004. US Приоритет(ы): (30) Конвенционный приоритет: R U (24) Дата начала отсчета срока действия патента: (72) Автор(ы): ШАМЬЮ Жан-Луи (FR), ЛИ Стивен Кевин (GB) WO 2014/095626 ( ...

ПРИДАНИЕ УДАРОПРОЧНОСТИ ТЕРМОПЛАСТИКАМ ПОСРЕДСТВОМ ИНТЕРПОЛИМЕРОВ ЭТИЛЕНА/α-ОЛЕФИНОВ

... 1. Композиция, включающая A) термопластичную полимерную композицию, и B) придающий ударопрочность интерполимер этилена/α-олефина, где интерполимер этилена/α-олефина представляет собой блок-интерполимер, содержащий, по меньшей мере, 50 моль.% этилена, и: (a) имеет Mw/Mn от приблизительно 1,7 до приблизительно 3,5, по меньшей мере, одну температуру плавления, Tпл, в градусах Цельсия, и плотность, d, в граммах/кубический сантиметр, где числовые значения Tпл и d соответствуют зависимости Tпл>-2002,9+4538,5(d)-2422,2(d)2; или (b) имеет Mw/Mn от приблизительно 1,7 до приблизительно 3,5 и характеризуется теплотой плавления, ΔH, в Дж/г, и изменением величины, ΔT, в градусах Цельсия, определенной как разница температур между наивысшим пиком ДСК и наивысшим пиком CRYSTAF, где числовые значения ΔT и ΔH удовлетворяют следующим зависимостям: ΔT>-0,1299(ΔH)+62,81 для ΔH более нуля и до 130 Дж/г, ΔT≥48°C для ΔH более 130 Дж/г, где пик CRYSTAF определяют с использованием, по меньшей мере, 5% совокупного ...

Use of polymers comprising two segments as polymer additives

A two-segment polymer material and use of the two-segment polymer material as a polymer additive or in a mixture comprising a polymer and the two-segment polymer material wherein the two-segment polymer material has the following structure: Wherein R and R1 are the same or different and each independently is alkyl or aryl group, X is H or C1-C20 alkyl group which may be branched or linear and wherein the aromatic ring substituent joined to polymer B is positioned meta or para to the aromatic ring substituent joined to polymer A, and wherein polymer A is a non-polar polymer, such as, for example it comprises a chain of ethylenically structural units, optionally copolymerised with 1-alkene co-monomers higher than ethylene, formed by metallocene catalysis. Polymer B, such as, for example it is derived from one or more alpha, beta-unsaturated monomers selected from styrene, (meth) acrylate and dienes and vinyl/fumarate/itaconate esters, maleic anhydride and derivatives thereof, and is formed ...

THERMOPLASTIC VULKANISAT WITH INTERCPOLYMERS OF ETHYL OLEFINEN

NEW ABA TRI BLOCK AND DIBLOCK OF COPOLYMERS AND PROCEDURES FOR THEIR PRODUCTION

COMPOSITIONS FROM ETHYLEN/ALPHA OLEFINMULTIBLOCK MORE INTERPOLYMER FOR FLEXIBLE FOILS AND LAMINATES

Procedure for the production of block polymers

POLYMER BLENDS FROM INTERPOLYMERS OF ETHYLENE/ALPHA-OLEFINS AND FLEXIBLE MOLDED ARTICLES MADE THEREFROM

Polymer blends comprises 1) at least one ethylene/.alpha.-olefin interpolymer and 2) at least one polyolefin, or at least one styrenic block copolymer, or a combination thereof. Such polyolefins include, but are not limited to, high melt strength high density polyethylene and high melt strength polypropylene. The ethylene/.alpha.-olefin interpolymers are random block copolymers comprising at least a hard block and at least a soft block. The polyolefins can be homopolymers or interpolymers. The resulting polymer blends can be used to make flexible molded articles.

THREE-BLOCK COPOLYMERS AND METHOD FOR PRODUCING THEM

USE OF POLYMERS COMPRISING TWO SEGMENTS AS POLYMER ADDITIVES

Materials having structure (1), wherein R and R1 may be the same or different and each independently represents an alkyl or aryl group, X may be hydrogen or a C1 to C20 alkyl group which may be branched or linear and wherein the aromatic ring substituent joined to polymer B is positioned meta or para to the aromatic ring substituent joined to polymer A and, wherein polymer A is a non-polar polymer formed by metallocene catalysis and polymer B is a polymer formed by radical catalysis of a polar monomer are used as polymer additives particularly to improve the compatibility of mixtures of polymers.

PROCEDE DE COPOLYMERISATION DE MONOMERES DE TYPES DIFFERENTS

Verfahren zur Herstellung von Blockpolymeren

Procédé pour la production de copolymères à partir de monomères de types différents

Préparation de polyoléfines peroxydées en bout de chaîne, et leur utilisation pour la synthèse de copolymères blocs

STEREOREGULYaRNYEDVUKhBLOChNYE POLYBUTADIENES, HAVING 1.4 - CIS/SINDIOTAKTIChESKUYu 1.2 STRUCTURE, OBTAINED BY MEANS OF STEREOSPECIFIC POLYMERIZATION OF

Cationic latices of copolymers based on conjugated dienes

TERPOLYMERES SEQUENCES AND PROCESS FOR THEIR PRODUCTION

PROCEDE DE PREPARATION DE CAOUTCHOUC DE POLYBUTADIENE A RESISTANCE MECANIQUE AMELIOREE

SELON L'INVENTION LA TENEUR EN EAU D'UNE SOLUTION DE 1,3-BUTADIENE DANS UN SOLVANT ORGANIQUE INERTE EST AJUSTEE ENTRE 0,2 ET 5 MILLIMOLES PAR LITRE DE SOLUTION DE 1,3-BUTADIENE; UN PREMIER MELANGE DE POLYMERISATION EST PREPARE EN 4 A PARTIR DE LA SOLUTION DE 1,3-BUTADIENE AJUSTEE, D'UN COMPOSE DE COBALT; LE PREMIER MELANGE DE POLYMERISATION EST SOUMIS EN 5 A UNE POLYMERISATION CIS-1,4; UN SECOND MELANGE DE POLYMERISATION COMPRENANT LE CIS-1,4-POLYBUTADIENE RESULTANT, DU 1,3-BUTADIENE QUI N'A PAS REAGI, LE SOLVANT ORGANIQUE INERTE, ET UN CATALYSEUR CONSTITUE D'UN COMPOSE D'ALUMINIUM ORGANIQUE, D'UN COMPOSE DE COBALT ET DE DISULFURE DE CARBONE EST SOUMIS EN 6 A UNE POLYMERISATION 1,2, POUR PRODUIRE UN CAOUTCHOUC DE POLYBUTADIENE AYANT DE 5 A 30 EN POIDS D'UNE FRACTION INSOLUBLE DANS LE N-HEXANE BOUILLANT ET DE 70 A 95 EN POIDS D'UNE FRACTION SOLUBLE DANS LE N-HEXANE BOUILLANT ET POSSEDANT UNE EXCELLENTE RESISTANCE MECANIQUE; PUIS LA REACTION DE POLYMERISATION 1,2 EST BLOQUEE EN 40 ET LE CAOUTCHOUC ...

IMPACT MODIFICATION OF THERMOPLASTICS WITH ETHYLENE/a- OLEFIN INTERPOLYMERS

IMPACT MODIFICATION OF THERMOPLASTICS WITH ETHYLENE/a-OLEFIN INTERPOLYMERS Compositions having good impact performance can be made from a thermoplastic (e.g., a polyolefin such as polypropylene or HDPE) and an ethylene multi- block copolymer. The compositions are easily molded and often have particular utility in making, for example, automotive facia, parts and other household articles. Fig. 13 ...

NOVEL ABA TRIBLOCK AND DIBLOCK COPOLYMERS AND METHODS OF PREPARING THE SAME

L'invention concerne un procédé de préparation d'un copolymère à trois séquences de formule (I), consistant à: (a) mettre en contact un cycloalcène avec un agent de transfert de chaîne de formule: Z- Y=Y-Z en présence d'un catalyseur de métathèse de carbène métallique pour constituer un polymère téléchélique, et (d) mettre en contact le polymère téléchélique avec un alcène de formule (II) en présence d'un catalyseur organométallique de polymérisation de radical de transfert d'atome (ATRP). Dans la formule de cette invention, n et m sont des nombres entiers, Z est un initiateur ATRP et -Y=Y- est un groupe alcényle, et, R' est sélectionné dans le groupe contenant aryle, nitrile et C¿1-C¿20 carboxylate, R' est substitué ou non substitué. L'invention concerne également un procédé de préparation d'un copolymère à deux séquences. En outre, cette invention a trait à un copolymère à trois séquences qui ne possède pas de structure 1,2-polybutadiéne dans la partie polybutadiène du copolymère.

Process for the preparation of prostaglandins and analogues thereof

Disclosed are processes for the synthesis and purification of prostaglandins and analogues thereof, especially analogues of PGF_2alpha.

Copolymers prepared by using both anionic polymerization techniques and coordination catalysts

A process for forming a copolymer comprising the steps of (i) preparing a living polymer segment by using anionic polymerization techniques, (ii) modifying the living polymer by reacting it with an alkyl metal halide to form an organometallic polymeric intermediate, and (iii) preparing a second polymer segment from the organometallic polymeric intermediate by combining the intermediate, conjugated diene monomer, and a coordination catalyst that will polymerize the conjugated diene monomer.

CATALYST COMPOSITION AND PROCESS FOR PRODUCING COPOLYMER

POLYMERS OF FLUORINATED MONOMERS AND HYDROCARBON MONOMERS

Functionalized ethylene/alpha-olefin interpolymer compositions

The invention relates to functionalized interpolymers derived from base olefin interpolymers, which are prepared by polymerizing one or more monomers or mixtures of monomers, such as ethylene and one or more comonomers, to form an interpolymer products having unique physical properties. The functionalized olefin interpolymers contain two or more differing regions or segments (blocks), resulting in unique processing and physical properties.

FUNCTIONAL BLOCK COPOLYMER AND PROCESS FOR PREPARING THE SAME

A copolymer having a compatibility for forming blend polymers with synthetic resins including condensation polymers, particularly aromatic ester polymers, and vinylic polymers; a block copolymer for imparting functions, such as ultraviolet absorption and flame retardancy; a process for preparing the same; and a modifier utilizing the functional polymer. The compatibilizing agent is prepared by incorporating a condensation polymer segment into a polyazo compound to prepare a macroazo polymerization initiator and polymerizing a vinyl monomer at the position of the azo group to prepare a condensation polymer-vinyl block copolymer. The functional block copolymer is prepared by block-copolymerizing a radical-polymerizable, function, imparting monomer with a polyazo compound having as the repeating unit a segment of a condensation or vinyl polymer and an azo group, using the azo group as a radical polymerization initiator. This copolymer may be utilized as a modifier for other synthetic resins ...

ПОЛИМЕРНЫЕ СМЕСИ ИЗ ИНТЕРПОЛИМЕРОВ ЭТИЛЕН/α-ОЛЕФИН С УЛУЧШЕННОЙ СОВМЕСТИМОСТЬЮ

Изобретение относится к полимерной смеси с улучшенной совместимостью, предназначенной для изготовления формованных изделий. Смесь содержит два различных полиолефина и этилен/α-олефиновый сополимер. Этилен/α-олефиновый сополимер представляет собой блок-сополимер, содержащий, по меньшей мере, один твердый блок и, по меньшей мере, один мягкий блок. Этилен/α-олефиновый сополимер может выполнять функцию компонента, улучшающего совместимость между двумя полиолефинами, которые могут быть несовместимы. Полимерные смеси по изобретению могут быть использованы для изготовления различных изделий, таких как шины, шланги, ремни, прокладки, обувные подошвы, отливки и формованные детали. Они особенно полезны для вариантов применения, требующих высокой прочности расплава, таких как большие детали, полученные формованием с раздувом, пены и арматурные пучки. 26 з.п. ф-лы, 10 ил., 13 табл.

ВОЛОКНА, ИЗГОТОВЛЕННЫЕ ИЗ СОПОЛИМЕРОВ ПРОПИЛЕНА/α-ОЛЕФИНОВ

Изобретение относится к технологии производства синтетических волокон, в частности, из пропилен/α-олефинового полиблок-интерполимера. Пропилен/α-олефиновый полиблок-интерполимер характеризуется упругим восстановлением Re в процентах, при деформации 300% и 1 цикле и плотностью d в грамм/кубический сантиметр, где упругое восстановление и плотность удовлетворяют следующему соотношению: Re>1481-1629(d). Mw/Mn составляет 1,7-3,5. Температура плавления Тпл соответствует следующему соотношению Tпл>-2002,9+4538,5(d)-2422,2(d)2, содержание сомономера в TREF фракции, которая элюируется от 40 до 130°С, составляет (-0,2013)Т+21,07, где Т - численное значение температуры элюирования пика ATREF, измеренной в °С. Волокна, изготовленные из полиблок-интерполимера, имеют относительно высокое упругое восстановление и относительно низкий коэффициент трения. При желании волокна могут быть сшиты. Из таких волокон могут быть изготовлены тканые и нетканые материалы. Изобретение обеспечивает получение эластичных ...

ТЕРМОПЛАСТИЧНЫЙ ВУЛКАНИЗАТ, СОДЕРЖАЩИЙ ИНТЕРПОЛИМЕРЫ ЭТИЛЕНА/α-ОЛЕФИНОВ

... 1. Термопластичный вулканизат, содержащий или получаемый из реакционной смеси, содержащей: (i) способный к вулканизации эластомер; (ii) термопластичный полиолефин; (iii) сшивающий агент; и (iv) этилен/α-олефиновый интерполимер, где этилен/α-олефиновый интерполимер имеет содержание этилена, по меньшей мере, 50 мас.% из расчета на общую массу интерполимера и: (а) имеет Mw/Mn от приблизительно 1,7 до приблизительно 3,5, по меньшей мере, одну температуру плавления Тпл, °С, и плотность, d, в г/см3, где числовые значения Тпл и d соответствуют соотношению: Тпл>-2002,9+4538,5(d)-2422,2(d)2; или (b) имеет Mw/Mn от приблизительно 1,7 до приблизительно 3,5 и характеризуется теплотой плавления ΔН, Дж/г, и величиной дельта ΔТ, °С, определяемой как разница температур между наиболее высоким пиком ДСК и наиболее высоким пиком CRYSTAF, где числовые значения ΔТ и ΔН имеют следующие соотношения: ΔТ>-0,1299(ΔН)+62,81 для ΔН более нуля и до 130 Дж/г, ΔТ≥48°С для ΔН более 130 Дж/г, где пик CRYSTAF определяют ...

ТРЕХМЕРНЫЕ СТАТИСТИЧЕСКИЕ ПЕРЕПЛЕТЕННЫЕ СТРУКТУРЫ, ИЗГОТОВЛЕННЫЕ ИЗ ИНТЕРПОЛИМЕРОВ ЭТИЛЕНА/α-ОЛЕФИНОВ, И ИХ ПРИМЕНЕНИЕ

... 1. Амортизирующая сетчатая структура, содержащая множество статистических переплетений, причем каждое статистическое переплетение соединено из расплава, по меньшей мере, с одним дополнительным переплетением, где статистические переплетения содержат непрерывное волокно и где волокно содержит этилен/α-олефиновый интерполимер, который представляет собой блок-сополимер, содержащий, по меньшей мере, 50 мол.% этилена и: (a) имеет Mw/Мn от приблизительно 1,7 до приблизительно 3,5, по меньшей мере, одну температуру плавления, Тпл, в градусах Цельсия, и плотность, d, в грамм/кубический сантиметр, где числовые значения Тпл и d соответствуют соотношению: Tпл>-2002,9+4538,5(d)-2422,2(d)2, (b) имеет Мw/Мn от приблизительно 1,7 до приблизительно 3,5 и характеризуется теплотой плавления, ΔН, в Дж/г, и величиной дельта, ΔТ, в градусах Цельсия, определяемой как разница температур между наиболее высоким пиком ДСК и наиболее высоким пиком CRYSTAF, где числовые значения ΔТ и ΔН имеют следующие соотношения: ...

КОМПОЗИЦИИ ИЗ ПОЛИБЛОЧНОГО ИНТЕРПОЛИМЕРА ЭТИЛЕНА/α-ОЛЕФИНА ДЛЯ ЭЛАСТИЧНЫХ ПЛЕНОК И ЛАМИНАТОВ

... 1. Композиция, подходящая для использования в эластичных пленках и ламинатах, содержащая, по меньшей мере, один интерполимер этилена/α-олефина, где интерполимер этилена/α-олефина представляет собой блок-сополимер, содержащий, по меньшей мере, 50 моль.% этилена: (a) имеет Mw/Mn от приблизительно 1,7 до приблизительно 3,5, по меньшей мере, одну температуру плавления, Tпл, в градусах Цельсия, и плотность, d, в граммах/кубический сантиметр, где числовые значения Tпл и d соответствуют зависимости: Tпл>-2002,9+4538,5(d)-2422,2(d)2; или (b) имеет Mw/Mn от приблизительно 1,7 до приблизительно 3,5, и характеризуется теплотой плавления, ΔH, в Дж/г, и изменением величины, ΔT, в градусах Цельсия, определенной как разница температур между наивысшим пиком ДСК и наивысшим пиком CRYSTAF, где числовые значения ΔT и ΔH удовлетворяют следующим зависимостям: ΔT>-0,1299(ΔH)+62,81 для ΔH более нуля и до 130 Дж/г, ΔT≥ 48°C для ΔH более 130 Дж/г, где пик CRYSTAF определяют с использованием, по меньшей мере, 5% ...

ВОЛОКНА, ИЗГОТОВЛЕННЫЕ ИЗ СОПОЛИМЕРОВ ПРОПИЛЕНА/α-ОЛЕФИНОВ

... 1. Волокно, которое может быть получено из пропилен/α-олефинового интерполимера или содержит пропилен/α-олефиновый интерполимер, где пропилен/α-олефиновый интерполимер характеризуется одним или несколькими следующими свойствами: (а) Mw/Mn от приблизительно 1,7 до приблизительно 3,5, по меньшей мере, одной температурой плавления, Тпл, в градусах Цельсия, и плотностью, d, в грамм/кубический сантиметр, где числовые значения Тпл и d соответствуют соотношению: Тпл>-2002,9+4538,5(d)-2422,2(d)2; или (b) Mw/Mn от приблизительно 1,7 до приблизительно 3,5 и теплотой плавления, ΔН, в Дж/г, и величиной дельта, ΔТ, в градусах Цельсия, определяемой как разница температур между наиболее высоким пиком ДСК и наиболее высоким пиком CRYSTAF, где числовые значения ΔТ и ΔН имеют следующие соотношения: ΔТ>-0,1299(ΔН)+62,81 для ΔН более нуля и до 130 Дж/г, ΔТ≥48°С для ΔН более 130 Дж/г, где пик CRYSTAF определяют с использованием, по меньшей мере, 5% совокупного полимера, и если менее 5% полимера имеют поддающийся ...

PROCESS FOR THE PREPARATION OF BLOCK COPOLYMERS

ETHYLEN / ALPHA-OLEFIN BLOCK-COPOLYMERE

Verfahren zur Herstellung einer wässrigen Polymerisatdispersion

Verfahren zur Herstellung einer wässrigen Polymerisatdispersion durch Polymerisation wenigstens eines ethylenisch ungesättigten Monomeren B in wässrigem Medium in Anwesenheit von Polymerisatteilchen A und wenigstens eines Dispergiermittels.

Polymerisation in umgekehrter Phase.

Improved adhesion of polyolefins to polyesters

A block copolymer of the following structure: Wherein R and R1 is alkyl or aryl group, X is hydrogen, or C1-C20 alkyl group may be branched or linear and wherein the aromatic ring substituent joined to polymer B is preferably positioned meta or para to the aromatic ring substituent joined to polymer A, and wherein polymer A is a polymer (or copolymer) of ethylene and polymer B is a polymer of vinyl acetate. Also disclosed is use of 0.1-15 wt% block copolymer as additive to polyethylene or polyethylene terephthalate; a process for producing a laminate of polyethylene and polyethylene terephthalate comprising the block copolymer. Also disclosed is a laminate comprising a layer of paper bonded to a layer of polyethylene bonded to a layer of terephthalate wherein at least one layer of polyethylene and the layer of polyethylene contains the block copolymer, and the laminate can be used as packaging material for foods and beverages.

POLYMERISATION PROCESS

... 1417002 Polymerization of butadiene BP CHEMICALS INTERNATIONAL Ltd 13 Feb 1973 [1 March 1972] 9536/72 Heading C3P Butadiene or a mixture of butadiene containing not more than 50 mole per cent of other monomers is polymerized in a 2 stage process in a substantially oxygen gas free environment wherein the second step (and preferably the first step) is carried out in the presence of (a) an ether or tertiary amine and (b) a chain transfer agent which is an aromatic hydrocarbon containing at least one hydrogen atom capable of replacement by a lithium atom and the steps comprise (1) contacting 1 to 30% by weight of monomer with an organolithium compound soluble in the reaction medium, so that the mole ratio of monomer to the lithium compound is 1 : 0À005 to 1 : 0À25 at -60‹ to 150‹ C. and allowing polymerization till all the lithium compound has reacted and (2) adding to the polymerization mixture thus obtained at least one alkali metal compound soluble in the reaction medium and selected from ...

Improved adhesion of polyolefins to polyesters

Use of polymers comprising two segments as polymer additives

Use of polymers comprising two segments as polymer additives

MULTI-STAGE PROCESS FOR (CO) - POLYMERIZING OF OLEFINEN

ETHYLS/ALPHA OLEFIN OF BLOCK COPOLYMERS

FROM COPOLYMERS OF ETHYLEN/ALPHA OLEFINEN MANUFACTURE FIBERS

NEW PHOTO INITIATORS AND THEIR APPLICATIONS

FOIL-SUITED COMPOSITIONS OF ETHYLEN/ALPHA OLEFIN MEHRBLOCKMISCHPOLYMER ONE

DIRECT TRANSFER OF A BY A ZIEGLERKATALYSATOR CATALYZED POLYMERIZATION REACTION INTO A BY A CHROME CATALYST CATALYZED REACTION.

Impact modification of thermoplastics with ethylene/alpha-olefin interpolymers

Multistage process for the (co)polymerization of olefins

ADHESIVE AND MARKING COMPOSITIONS MADE FROM INTERPOLYMERS OF ETHYLENE/ALPHA-OLEFINS

An adhesive composition comprises: (i) at least one ethylene/.alpha.-olefin interpolymer, (ii) at least one tackif╥er; and (iii) optionally at least one additive, such as a plasticizer, wax and antioxidant. Preferably, the ethylene/.alpha.-olefm interpolymer has a Mw/Mn from about 1.7 to about 3.5, at least one melting point, Tm, in degrees Celsius, and a density, d, in grams/cubic centimeter, wherein the numerical values of Tm and d correspond to the relationship: Tm >= 858.91 - 1825.3(d) + 1112.8(d)2. The composition has relatively higher SAFT temperature and can be used in hot melt adhesives pressure-sensitive adhesives, and thermoplastic marking paints.

VISCOSITY INDEX IMPROVER FOR LUBRICANT COMPOSITIONS

A lubricant composition comprises a base oil and a viscosity modifier including an ethylene/.alpha.-olefm interpolymer. The ethylene/.alpha.-olefm interpolymer is a block copolymer having at least a hard block and at least a soft block. The soft block comprises a higher amount of comonomers than the hard block. The block copolymer has a number of unique characteristics disclosed here. Such block copolymers offer the possibility of improved low temperature performance and flexibility in formulating motor oil, gear lubricants and greases, etc.

ETHYLENE/ALPHA-OLEFINS BLOCK INTERPOLYMERS

Embodiments of the invention provide a class of ethylene/.alpha.-olef╥n block interpolymers. The ethylene/.alpha.-olef╥n interpolymers are characterized by an average block index, ABI, which is greater than zero and up to about 1.0 and a molecular weight distribution, Mw/Mn, greater than about 1.3. Preferably, the block index is from about 0.2 to about 1. In addition or alternatively, the block ethylene/.alpha.-olefin interpolymer is characterized by having at least one fraction obtained by Temperature Rising Elution Fractionation ("TREF"), wherein the fraction has a block index greater than about 0.3 and up to about 1.0 and the ethylene/.alpha.-olefin interpolymer has a molecular weight distribution, Mw/Mn, greater than about 1.3.

PROCESS FOR THE PREPARATION OF BLOCK COPOLYMERS

PRESS FOR THE PREPARATION OF BLOCK COPOLYMERS Block copolymers are prepared by using two successive and different catalytic processes, a Ziegler-Natta type polymerization followed by an anionic polymerization.

PROCESS FOR PRODUCING POLYBUTADIENE RUBBER WITH ENHANCED MECHANICAL STRENGTH

PROCESS FOR PRODUCING POLYBUTADIENE RUBBER WITH ENHANCED MECHANICAL STRENGTH A polybutadiene rubber having an enhanced mechanical strength is produced by a process comprising two successive steps of: (A) cis-1,4-polymerizing 1,3-butadiene in a polymerization medium in the presence of a catalyst comprising a cobalt compound and a dialkyl aluminium halide of the formula (I): A?R2X, wherein R = C2-8 alkyl and X = halogen, and; (B) subjecting a mixture of the resultant cis-1,4- -polybutadiene and the non-reacted 1,3-butadiene in the polymerization medium to a 1,2-polymerization in the presence of a catalyst comprising a cobalt compound, a dialkyl aluminium halide of the formula (I), carbon disulfide and an electron donative organic compound.

FOAMS MADE FROM INTERPOLYMERS OF ETHYLENE/.ALPHA.-OLEFINS

Foamable compositions and foams comprise at least an ethylene/.alpha.-olefin interpolymer. The foam has a density from greater than 150 to about 500 kg/m . The foamable compositions further comprise a blowing agent and a crosslinking agent. The ethylene/.alpha.-olefin interpolymers are a multi-block copolymer comprising at least one soft block and at least one hard block. Methods of making the foamable compositions and foams; and foamed articles made from the foams are also described.

STRUCTURED BLOCK COPOLYMERS

The invention provides new polyvinylamide and/or acryl acid based copolymers. The new structured block copolymers are based on the block copolymerization of N-vinyl formamide (NVF) with other monomers by using a bifunctional initiator. Further, a method of preparing the structured block copolymer is provided, and especially a method wherein the NVF-based block is at least partially hydrolyzed to obtain PVAm. Also the use of the new structured block copolymers in sludge dewatering and in papermaking processes is disclosed.

OLEFIN BLOCK COMPOSITIONS FOR HEAVY WEIGHT STRETCH FABRICS

Heavy weight stretch fabrics comprising ethylene/alpha-olefin interpolymer are described. The fabric often has a weight of at least 10 ounces per square yard measured according to ASTM 3776 and has a stretch of at least 10 percent measured according to ASTM D3107. These fabrics exhibit excellent chemical resistance (for example chlorine or caustic resistance) and durability, that is they retain their shape and feel over repeated exposure to processing conditions, such as stone-washing, dye-stripping, PET-dyeing and the like, and industrial laundry conditions.

ADDITIVES FOR FUELS AND OILS COMPRISING FUNCTIONALISED DIBLOCK COPOLYMERS

Concentrates containing specific functionalised diblock copolymers serve as effective additives for improving the cold flow behaviour of fuels and oils, the copolymers being derived from a terminally-unsaturated intermediate polymer obtained via a metallocene process involving hydrogen.

STEREOREGULYaRNYEDVUKhBLOChNYE POLYBUTADIENES, HAVING 1.4 - CIS/SINDIOTAKTIChESKUYu 1.2 STRUCTURE, OBTAINED BY MEANS OF STEREOSPECIFIC POLYMERIZATION OF

From the isotacticity polymerization with 1, 4 - cis/syndiotactic 1, 2 with the gauge sets up the construction of the structure of the diblock polybutadiene

PROCESS OF PRODUCTION OF COPOLYMERS SEQUENCES

LATEX CATIONIQUES DE COPOLYMERES A BASE DE DIENES CONJUGUES

L'invention vise des latex cationiques de copolymères à base de diènes conjugués obtenus en deux étapes : - une première étape consistant à préparer une dispersion aqueuse cationique de particules en polymérisant en émulsion un composé azoté tertiaire insaturé non hydrolysable et un monomère non ionogène copolymérisable au sein d'un milieu réactionnel contenant des charges essentiellement cationiques apportées par une substance génératrice de charges cationiques liables chimiquement aux polymères obtenus ; - une deuxième étape consistant à polymériser, au sein de la dispersion aqueuse cationique obtenue à la première étape, un diène conjugué en présence d'un amorceur non chargé ou générateur de charges cationiques. Les latex cationiques peuvent être utilisés comme liants pour le couchage du papier, pour la préparation de voiles de non-tissés, pour le revêtement de substrats métalliques.

FUNCTIONALIZED ETHYLENE/α-OLEFIN INTERPOLYMER COMPOSITIONS

ADHESIVE AND MARKING COMPOSITIONS MADE FROM INTERPOLYMERS OF ETHYLENE/ALPHA-OLEFINS

STRETCH FABRICS WITH WRINKLE RESISTANCE AND GARMENT

Compositions having good wrinkle resistance and other properties when made into garments that can be made from an ethylene multi-block copolymer. The resulting fabrics and garments often have good chemical resistance, heat-resistances, and are dimensionally stable. © KIPO & WIPO 2009 ...

[...]/ethylene alpha-olefin

FUNCTIONALIZED ETHYLENE/a-OLEFIN INTERPOLYMER COMPOSITIONS

The invention relates to functionalized interpolymers derived from base olefin interpolymers, which are prepared by polymerizing one or more monomers or mixtures of monomers, such as ethylene and one or more comonomers, to form an interpolymer products having unique physical properties. The functionalized olefin interpolymers contain two or more differing regions or segments (blocks), resulting in unique processing and physical properties.

RHEOLOGY MODIFICATION OF INTERPOLYMERS OF ETHYLENE/ALPHA-OLEFINS AND ARTICLES MADE THEREFROM

RHEOLOGY MODIFICATION OF INTERPOLYMERS OFETHYLENE/ALPHA-OLEFINS AND ARTICLES MADE THEREFROM Rheology modification of an ethylene/a-olefin interpolymer is achieved by blending the interpolymer with at least one branched polyolefm. The polyolefins can be homopolymers or interpolymers and have a branching index of less than 1. The ethylene/[err]-olefin interpolymeris a block copolymer having at least a hard block and at least a soft block. The soft block comprises a higher amount of comonomers than the hard block. The block interpolymer has a number of unique characteristics disclosed here. Rheology- modified ethylene/[err]-olefin interpolymer, i.e., the resulting polymer blends, can be extruded or molded into many useful articles, such as films, sheets, profiles, gaskets; foams, etc.

VISCOSITY INDEX IMPROVER FOR LUBRICANT COMPOSITIONS

A lubricant composition comprises a base oil and a viscosity modifier including an ethylene/ α-olefin interpolymer. The ethylene/α-olefin interpolymer is a block copolymer having at least a hard block and at least a soft block. The soft block comprises a higher amount of comonomers than the hard block. The block copolymer has a number of unique characteristics disclosed here. Such block copolymers offer the possibility of improved low temperature performance and flexibility in formulating motor oil, gear lubricants and greases, etc.

FUNCTIONALIZED ETHYLENE/α-OLEFIN INTERPOLYMER COMPOSITIONS

The invention relates to functionalized interpolymers derived from base olefin interpolymers, which are prepared by polymerizing one or more monomers or mixtures of monomers, such as ethylene and one or more comonomers, to form an interpolymer products having unique physical properties. The functionalized olefin interpolymers contain two or more differing regions or segments (blocks), resulting in unique processing and physical properties.

Multistage process for the (co)polymerization of olefins

Multistage process for the polymerization of olefins CH2=CHR, where R is hydrogen or an alkyl, cycloalkyl or aryl radical with 1-10 carbon atoms, comprising two stages of polymerization. In a first stage, in the presence of a titanium or a vanadium catalyst and working in one or more reactors, an olefinic polymer with particular values of porosity is prepared; in a second stage, in the presence of the said porous polymer and a metallocene compound and/or their reaction products, one or more olefins, that are equal to or different from those polymerized in the first stage, are polymerized in ore or more reactors.

Monofunctional polymers of olefins and block copolymers obtained therefrom

ФУНКЦИОНАЛИЗИРОВАННЫЕ КОМПОЗИЦИИ ИНТЕРПОЛИМЕРОВ ЭТЛЕНА/α-ОЛЕФИНА

... 1. Композиция, включающая, по меньшей мере, один функционализированный олефиновый интерполимер, где интерполимер представляет собой блок-интерполимер, содержащий, по меньшей мере, 50 мол.% этилена, и где функционализированный олефиновый интерполимер сформирован из олефинового интерполимера, имеющего, по меньшей мере, одну температуру плавления, Тпл, в градусах Цельсия, и плотность, d*, в граммах/кубический сантиметр, и где числовые значения переменных соответствуют зависимости: Тпл>-2002,9+4538,5(d*)-2422,2(d*)2, и где олефиновый интерполимер имеет Мw/Мn от 1,7 до 3,5. 2. Композиция по п.1, где олефиновый интерполимер функционализирован, по меньшей мере, одним ненасыщенным соединением, содержащим, по меньшей мере, один гетероатом. 3. Композиция по п.1, где олефиновый интерполимер функционализирован, по меньшей мере, одним содержащим карбонил соединением. 4. Композиция по п.3, где, по меньшей мере, одно содержащее карбонил соединение выбрано из группы, состоящей из малеинового ангидрида, ...

ПОЛИМЕРНЫЕ СМЕСИ ИЗ ИНТЕРПОЛИМЕРОВ ЭТИЛЕНА/α-ОЛЕФИНОВ И ПОЛУЧАЕМЫЕ ИЗ НИХ МЯГКИЕ ЛИТЫЕ ИЗДЕЛИЯ

... 1. Полимерная смесь, содержащая: (i) по меньшей мере, один интерполимер этилена/α-олефина, где интерполимер этилена/α-олефина представляет собой блок-интерполимер и: (a) имеет Mw/Mn от приблизительно 1,7 до приблизительно 3,5, по меньшей мере, одну температуру плавления, Tпл, в градусах Цельсия, и плотность, d, в граммах/кубический сантиметр, где числовые значения Tпл и d соответствуют зависимости: Tпл>-2002,9+4538,5(d)-2422,2(d)2; или (b) имеет Mw/Mn от приблизительно 1,7 до приблизительно 3,5 и характеризуется теплотой плавления, ΔH, в Дж/г, и изменением величины, ΔT, в градусах Цельсия, определенной как разница температур между наивысшим пиком ДСК и наивысшим пиком CRYSTAF, где числовые значения ΔT и ΔH удовлетворяют следующим зависимостям: ΔT>-0,1299(ΔH)+62,81 для ΔH более нуля и до 130 Дж/г, ΔT≥48°C для ΔH более 130 Дж/г, где пик CRYSTAF определяют с использованием, по меньшей мере, 5% совокупного полимера, а если идентифицируемому пику CRYSTAF соответствуют менее 5% полимера, тогда ...

СМЕСИ ИНТЕРПОЛИМЕРОВ ЭТИЛЕНА/α-ОЛЕФИНОВ И ПРОФИЛИ, И ПРОКЛАДКИ, ИЗГОТОВЛЕННЫЕ ИЗ НИХ

... 1. Полимерная смесь, содержащая: (i) по меньшей мере, один этилен/α-олефиновый интерполимер, где этилен/α-олефиновый интерполимер представляет собой блок-сополимер и: (а) имеет Mw/Mn от приблизительно 1,7 до приблизительно 3,5, по меньшей мере, одну температуру плавления, Тпл, в градусах Цельсия, и плотность, d, в грамм/кубический сантиметр, где числовые значения Тпл и d соответствуют соотношению: Тпл>-2002,9+4538,5(d)-2422,2(d)2; (b) имеет Mw/Mn от приблизительно 1,7 до приблизительно 3,5 и характеризуется теплотой плавления, ΔН, в Дж/г, и величиной дельта, ΔТ, в градусах Цельсия, определяемой как разница температур между наиболее высоким пиком ДСК и наиболее высоким пиком CRYSTAF, где числовые значения ΔТ и ΔН имеют следующие соотношения: ΔТ>-0,1299(ΔН)+62,81 для ΔН более нуля и до 130 Дж/г, ΔТ≥48°С для ΔН более 130 Дж/г, где пик CRYSTAF определяют с использованием, по меньшей мере, 5%-ного совокупного полимера, и если менее 5% полимера имеют поддающийся определению пик CRYSTAF, то температура ...

ПРЕПЯТСТВУЮЩИЕ СЛИПАНИЮ КОМПОЗИЦИИ, СОДЕРЖАЩИЕ ИНТЕРПОЛИМЕРЫ ЭТИЛЕН/ОЛЕФИНЫ

... 1. Полимерная композиция, включающая: (i) по меньшей мере, один этилен/α-олефиновый интерполимер, где этилен/α-олефиновый интерполимер представляет собой блок-интерполимер и: (а) имеет Mw/Mn от приблизительно 1,7 до приблизительно 3,5, по меньшей мере, одну температуру плавления, Тпл, °С, и плотность, d, г/см2, где числовые значения Тпл и d соответствуют соотношению: Тпл≥-2002,9+4538,5(d)-2422,2(d)2; или (b) имеет Mw/Mn от приблизительно 1,7 до приблизительно 3,5 и характеризуется теплотой плавления, ΔН, Дж/г, и величиной дельта, ΔТ, °С, определяемой как разница температур между наиболее высоким пиком ДСК и наиболее высоким пиком CRYSTAF, где числовые значения ΔТ и ΔН имеют следующие соотношения: ΔТ>-0,1299(ΔН)+62,81 для ΔН более нуля и до 130 Дж/г, ΔТ≥48°С для ΔН более 130 Дж/г, где пик CRYSTAF определяют с использованием, по меньшей мере, 5% совокупного полимера, и, если менее 5% полимера имеют поддающийся определению пик CRYSTAF, то температура CRYSTAF равна 30°С; или (с) характеризуется ...

КОМПОЗИЦИИ ПОЛИБЛОЧНОГО ИНТЕРПОЛИМЕРА ЭТИЛЕНА/α-ОЛЕФИНА, ПОДХОДЯЩИЕ ДЛЯ ПЛЕНОК

... 1. Пленка, содержащая, по меньшей мере, один интерполимер этилена/α-олефина, где интерполимер этилена/α-олефина представляет собой блок-интерполимер, содержащий, по меньшей мере, 50 моль.% этилена и (a) имеет Mw/Mn от приблизительно 1,7 до приблизительно 3,5, по меньшей мере, одну температуру плавления, Tпл, в градусах Цельсия, и плотность, d, в граммах/кубический сантиметр, где числовые значения Tпл и d соответствуют зависимости Tпл>-2002,9+4538,5(d)-2422,2(d)2; или (b) имеет Mw/Mn от приблизительно 1,7 до приблизительно 3,5 и характеризуется теплотой плавления, ΔH, в Дж/г, и изменением величины, ΔT, в градусах Цельсия, определенной как разница температур между наивысшим пиком ДСК и наивысшим пиком CRYSTAF, где числовые значения ΔT и ΔH удовлетворяют следующим зависимостям: ΔT>-0,1299(ΔH)+62,81 для ΔH более нуля и до 130 Дж/г, ΔT≥48°C для ΔH более 130 Дж/г, где пик CRYSTAF определяют с использованием, по меньшей мере, 5% совокупного полимера, а если идентифицируемому пику CRYSTAF соответствуют ...

СПОСОБ ПОЛУЧЕНИЯ КОЛЛОИДНОГО РАСТВОРА УЗКОДИСПЕРСНОГО ПО МОЛЕКУЛЯРНОЙ МАССЕ АМФИФИЛЬНОГО БЛОКСОПОЛИМЕРА БУТИЛАКРИЛАТА И АКРИЛОВОЙ КИСЛОТЫ С УЗКИМ РАСПРЕДЕЛЕНИЕМ МИЦЕЛЛ ПО РАЗМЕРУ

Изобретение относится к способу получения коллоидных растворов блоксополимера бутилакрилата и акриловой кислоты. Способ получения коллоидных растворов узкодисперсного по молекулярной массе амфифильного блоксополимера бутилакрилата и акриловой кислоты с узким распределением мицелл по размеру включает на первой стадии полимеризацию одного мономера в присутствии радикального инициатора и низкомолекулярного агента обратимой передачи цепи (ОПЦ-агента) и на второй стадии включает сополимеризацию полученного полимерного ОПЦ-агента со вторым мономером. Способ отличается тем, что на первой стадии проводят блочную полимеризацию БА при следующем соотношении компонентов (в.ч.): бутилакрилат 97,2-99,72; радикальный инициатор 0,1-1; ОПЦ-агент 0,18-1,8; на второй стадии проводят растворную полимеризацию АК в смеси алифатический спирт - вода в присутствии полибутилакрилатного ОПЦ-агента, полученного на первой стадии, и водорастворимого радикального инициатора при следующем соотношении компонентов (в.ч.

Способ получения карбоцепных полимеров, содержащих перекисные группы

PROCEDURE FOR THE PRODUCTION OF AN AQUEOUS POLYMER DISPERSION

CATALYST COMPOSITION WITH SHUTTLUNG MEANS FOR THE PRODUCTION OF ETHYL MULTI-BLOCK COPOLYMER

POLYMERE ONE FROM FLUORIDATED MONOMERS AND HYDROCARBON MONOMERS

FROM COPOLYMERS OF PROPYLENE /ALPHA OLEFINEN MANUFACTURE FIBERS

FILLED POLYMER COMPOSITIONS MADE FROM INTERPOLYMERS OF ETHYLENE/ALPHA-OLEFINS AND USES THEREOF

A filled polymer composition comprises (i) an ethylene/.alpha.-olefin interpolymer, and (ii) a filler. The ethylene/.alpha.-olefm interpolymer is a block copolymer having at least a hard block and at least a soft block. The soft block comprises a higher amount of comonomers than the hard block. The block interpolymer has a number of unique characteristics disclosed here. The filled polymer compositions provided herein, in certain embodiments, have relatively higher heat resistance and improved noise, vibration and harshness properties and can be used in automotive floorings, roofings, wire and cable coating applications.

RHEOLOGY MODIFICATION OF INTERPOLYMERS OF ETHYLENE/ALPHA-OLEFINS AND ARTICLES MADE THEREFROM

Rheology modification of an ethylene/.alpha.-olefin interpolymer is achieved by blending the interpolymer with at least one branched polyolefm. The polyolefins can be homopolymers or interpolymers and have a branching index of less than 1. The ethylene/.alpha.-olefin interpolymeris a block copolymer having at least a hard block and at least a soft block. The soft block comprises a higher amount of comonomers than the hard block. The block interpolymer has a number of unique characteristics disclosed here. Rheology- modified ethylene/.alpha.-olefin interpolymer, i.e., the resulting polymer blends, can be extruded or molded into many useful articles, such as films, sheets, profiles, gaskets; foams, etc.

PREPARATION DE POLYOLEFINES PEROXYDEES EN BOUT DE CHAINE, ET LEU R APPLICATION A LA SYNTHESE OPOLYMERES BLOCS

INVERSE PHASE POLYMERIZATION

It is sometimes advantageous to disperse crystalline polymers throughout rubbery elastomers. For instance, the cold flow characteristics and green strength of polydiene rubbers can be improved by dispersing syndiotactic-1,2-polybutadiene therein. This invention discloses a process for preparing a highly dispersed blend of a crystalline polymer in a rubbery elastomer which comprises (1) polymerizing at least one diene monomer in an organic solvent under solution polymerization conditions to form a polymer cement of the rubbery elastomer in the organic solvent, (2) polymerizing additional monomers in the polymer cement into the crystalline polymer to form a rubbery cement having the crystalline polymer dispersed therein, and (3) recovering the highly dispersed blend of the crystalline polymer in the rubbery elastomer from the organic solvent in the rubber cement.

COPOLYMERS PREPARED BY USING BOTH ANIONIC POLYMERIZATION TECHNIQUES AND COORDINATION CATALYSTS

A process for forming a copolymer comprising the steps of (i) preparing a living polymer segment by using anionic polymerization techniques, (ii) modifying the living polymer by reacting it with an alkyl metal halide to form an organometallic polymeric intermediate, and (iii) preparing a second polymer segment from the organometallic polymeric intermediate by combining the intermediate, conjugated diene monomer, and a coordination catalyst that will polymerize the conjugated diene monomer.

OLEFIN BLOCK COMPOSITIONS FOR STRETCH FABRICS WITH WRINKLE RESISTANCE

Compositions having good wrinkle resistance and other properties when mad e into garments that can be made from an ethylene multi-block copolymer. The resulting fabrics and garments often have good chemical resistance, heat-re sistances, and are dimensionally stable.

CYCLOOLEFIN POLYMERS

The present invention relates to a cycloolefin polymer having a solution viscosity > 0.25 dl/g and containing polymerized units of at least one cycloolefin and, if desired, polymerized units of one or more acyclic olefins, wherein the cycloolefin polymer has at one or both ends an olefinically unsaturated group having at least 3 carbon atoms.

MULTISTAGE PROCESS FOR THE (CO)POLYMERIZATION OF OLEFINS

Multistage process for the polymerization of olefins CH2=CHR, where R is hydrogen or an alkyl, cycloalkyl or aryl radical with 1-10 carbon atoms, comprising two stages of polymerization. In a first stage, in the presence of a titanium or a vanadium catalyst and working in one or more reactors, an olefinic polymer with particular values of porosity is prepared; in a second stage, in the presence of the said porous polymer and a metallocene compound and/or their reaction products, one or more olefins, that are equal to or different from those polymerized in the first stage, are polymerized in ore or more reactors.

PROCEEDED OF PREPARATION OF POLYBUTADIENE RUBBER MECHANICAL RESISTANCE AMELIOREE HAS

Peroxided polymers - for making graft or sequenced copolymers of controlled structure

Process for the preparation of prostaglandins and analogues thereof

RHEOLOGY MODIFICATION OF INTERPOLYMERS OF ETHYLENE/ALPHA-OLEFINS AND ARTICLES MADE THEREFROM

Rheology modification of an ethylene/α-olefin interpolymer is achieved by blending the interpolymer with at least one branched polyolefm. The polyolefins can be homopolymers or interpolymers and have a branching index of less than 1. The ethylene/α-olefin interpolymeris a block copolymer having at least a hard block and at least a soft block. The soft block comprises a higher amount of comonomers than the hard block. The block interpolymer has a number of unique characteristics disclosed here. Rheology-modified ethylene/α-olefin interpolymer, i.e., the resulting polymer blends, can be extruded or molded into many useful articles, such as films, sheets, profiles, gaskets; foams, etc.

POLYMER BLENDS WITH ETHYLENE/α-OLEFIN INTERPOLYMERS

Embodiments of the invention provide an impact modified composition comprising ethylene/α-olefin interpolymers. The ethylene/α-olefin interpolymers are characterized by an average block index, ABI, which is greater than zero and up to about 1.0 and a molecular weight distribution, Mw/Mn, greater than about 1.3. In addition or alternatively, the block ethylene/α-olefin interpolymer is characterized by having at least one fraction obtained by Temperature Rising Elution Fractionation ("TREF"), wherein the fraction has a block index greater than about 0.3 and up to about 1.0 and the ethylene/α-olefin interpolymer has a molecular weight distribution, Mw/Mn, greater than about 1.4.

FIBERS MADE FROM COPOLYMERS OF PROPYLENE/ALPHA-OLEFINS

A fiber is obtainable from or comprises a propylene/α-olefin interpolymer characterized by an elastic recovery, Re, in percent at 300 percent strain and 1 cycle and a density, d, in grams/cubic centimeter, wherein the elastic recovery and the density satisfy the following relationship: Re >1481-1629(d). Such interpolymer can also be characterized by other properties. The fibers made therefrom have a relatively high elastic recovery and a relatively low coefficient of friction. The fibers can be cross-linked, if desired. Woven or non- woven fabrics can be made from such fibers.

Polymer composition and a molded article thereof

A polymer composition comprising a methacrylic resin (A) having not less than 50% by mass of repeated units derived from methyl methacrylate, a block copolymer (B) having a polymer block (a) composed of repeated units derived from an alkyl(meth)acrylate ester and a polymer block (b) composed of repeated units derived from a conjugated diene compound and flowable polyorganosiloxane (C), wherein the amount of the block copolymer (B) is 1 to 80 parts by mass relative to 100 parts by mass of the methacrylic resin (A), the amount of the flowable polyorganosiloxane (C) is 0.05 to 0.5 part by mass relative to 100 parts by mass of the block copolymer (B), and a phase composed of the block copolymer (B) is dispersed in a continuous phase composed of the methacrylic resins (A).

OLEFIN BLOCK COPOLYMER AND SHEET-SHAPED MOLDED BODY

The present description relates to an olefin block copolymer preferably useful to form nonslip pads due to excellences in elasticity and heat resistance, and a sheet-shaped molded body comprising the olefin block copolymer The olefin block copolymer includes a plurality of blocks or segments, each of which includes an ethylene or propylene repeating unit and an α-olefin repeating unit at different weight fractions. The olefin block copolymer satisfies a defined relationship when a load of 5 to 10 kg is applied to a sheet-shaped molded body of the block copolymer for 12 hours or longer at a temperature of 60° C. or higher, and then removed. 1. An olefin block copolymer comprising a plurality of blocks or segments , each comprising an ethylene or propylene repeating unit and an α-olefin repeating unit at different weight fractions , {'br': None, 'i': T', '−T', 'T, 'sub': 0', '0, '60%≧{()}×100\u2003\u2003[Mathematical Formula 1]'}, 'wherein the olefin block copolymer satisfies the following Mathematical Formula 1 when a load of 5 to 10 kg is applied to a sheet-shaped molded body of the block copolymer for 12 hours or longer at a temperature of 60° C. or higher, and then removed{'sub': '0', 'wherein Tis the initial thickness of the sheet-shaped molded body of the block copolymer; and T is the thickness of the sheet-shaped molded body after removal of the load.'}2. The olefin block copolymer as claimed in claim 1 , wherein the olefin block copolymer comprises a hard segment comprising a first weight fraction of the α-olefin repeating unit and a soft segment comprising a second weight fraction of the α-olefin repeating unit claim 1 ,wherein the second weight fraction is greater than the first weight fraction.3. The olefin block copolymer as claimed in claim 2 , wherein the weight fraction of the α-olefin repeating unit contained in the entire block copolymer has a value between the first and second weight fractions.4. The olefin block copolymer as claimed in claim 2 , ...

SHEET MOLDING COMPOUND, FIBER-REINFORCED COMPOSITE MATERIAL, AND METHOD FOR PRODUCING FIBER-REINFORCED COMPOSITE MATERIAL

A sheet molding compound according to a first aspect of the present invention comprises: 1. A sheet molding compound comprising:a thickened product of a resin composition comprising a vinyl ester resin, a thickener, a polymerization initiator, a polymerization inhibitor and isobornyl methacrylate; anda reinforcing fiber.2. The sheet molding compound according to claim 1 , wherein a content of said polymerization inhibitor is from 0.01 to 1.0% by mass with respect to a total mass of said vinyl ester resin and an unsaturated polyester resin which is optionally comprised in said resin composition.3. The sheet molding compound according to claim 1 , wherein said polymerization initiator comprises a compound having a 10-hour half-life temperature of from 70 to 120° C.4. The sheet molding compound according to claim 1 , wherein when said resin composition is allowed to stand at 23° C. after production claim 1 , a rate of increase of a viscosity after 50 days of production with respect to a viscosity after 7 days of production of said resin composition is 100% or less.5. The sheet molding compound according to claim 1 , wherein an absolute value of a rate of change of an indentation hardness after 50 days of production with respect to an indentation hardness after 7 days of production is 30% or less when allowed to stand at 23° C. after production.6. A sheet molding compound according to claim 1 , wherein an absolute value of a rate of change of an indentation hardness is 30% or less when allowed to stand at 23° C. for 43 days.7. The sheet molding compound according to claim 1 , wherein said reinforcing fiber comprises a carbon fiber.8. The sheet molding compound according to claim 1 , wherein a cured product of said sheet molding compound has a glass transition temperature Tg of 165° C. or higher.9. The sheet molding compound according to claim 1 , wherein a cured product of said sheet molding compound has a flexural strength at 80° C. of 250 MPa or more.10. The sheet ...

OLEFIN BLOCK COPOLYMER AND PREPARATION METHOD THEREOF

The present description relates to an olefin block copolymer having excellences in elasticity and heat resistance and its preparation method. The olefin block copolymer includes a plurality of blocks or segments, each of which includes an ethylene or propylene repeating unit and an α-olefin repeating unit at different weight fractions. The olefin block copolymer has a density of 0.85 to 0.92 g/cm, and density X (g/cm) and TMA (Thermal Mechanical Analysis) value Y (° C.) satisfy a defined relationship. 112-. (canceled)14. The method as claimed in claim 13 , wherein the catalyst composition further comprises at least one cocatalyst compound selected from the group consisting of compounds represented by the following Chemical Formulas 3 claim 13 , 4 and 5:{'br': None, 'i': J', 'R, 'sup': '4′', 'sub': '3', '()\u2003\u2003[Chemical Formula 3]'}wherein J is aluminum (Al) or boron (B); and{'sup': '4′', 'sub': 1', '20, 'claim-text': {'br': None, 'sup': +', '−', '+', '−, 'sub': 4', '4, '[L-H][ZA] or [L][ZA]\u2003\u2003[Chemical Formula 4]'}, 'Rs are independently a halogen or a halogen-substituted or unsubstituted C-Chydrocarbyl radical,'}wherein L is a neutral or cationic Lewis acid; H is hydrogen;Z is a Group 13 element; and{'sub': 6', '20', '1', '20', '1', '20', '1', '20, 'claim-text': {'br': None, 'sup': '5′', 'sub': 'a', '—[Al(R)—O]—\u2003\u2003[Chemical Formula 5]'}, 'As are independently C-Caryl or C-Calkyl in which at least one hydrogen is substituted by a halogen, a C-Chydrocarbyl group, a C-Calkoxy group, or a phenoxy group,'}{'sup': '5', 'sub': 1', '20, 'wherein Ris a halogen or a halogen-substituted or unsubstituted C-Chydrocarbyl radical; and'}a is an integer of 2 or greater.15. The method as claimed in claim 13 , wherein the catalyst composition further comprises at least one polymerization aid selected from the group consisting of an aluminum compound containing a C-Chydrocarbyl substituent claim 13 , a zinc compound containing a C-Chydrocarbyl substituent ...

Polyolefin Compositions

A composition comprising vinyl-terminated polyethylene having an Mn from about 200 g/mol to about 10,000 g/mol; and a comb polyolefin having polyethylene arms attached to a random copolymer backbone, said backbone including units derived from an alpha-olefin having 3 or more carbon atoms, where the polyethylene arms have an Mn from about 200 g/mol to about 10,000 g/mol, and where the comb polyolefin has an Mp from about 7,500 to about 400,000 g/mol. 1. A composition comprising:(i) vinyl-terminated polyethylene having an Mn from about 200 g/mol to about 10,000 g/mol; and(ii) a comb polyolefin having polyethylene arms attached to a random copolymer backbone, said backbone including units derived from an alpha-olefin having 3 or more carbon atoms, where the polyethylene arms have an Mn from about 200 g/mol to about 10,000 g/mol, and where the comb polyolefin has an Mp from about 7,500 to about 400,000 g/mol.2. The composition of claim 1 , where the vinyl-terminated polyethylene have an Mn from about 1500 g/mol to about 6 claim 1 ,000 g/mol.3. The composition of claim 1 , where the comb polyolefin has an Mp from about 20 claim 1 ,000 to about 200 claim 1 ,000.4. The composition of claim 1 , where the alpha-olefin having 3 or more carbon atoms is propylene.5. The composition of claim 1 , where the backbone includes units derived from propylene and units derived from ethylene claim 1 , where the majority of the total units in the polymer backbone are units derived from propylene.6. The composition of claim 1 , where the comb polyolefin is a random copolymer including units derived from vinyl-terminated polyethylene claim 1 , from ethylene claim 1 , and from alpha-olefin having 3 or more carbon atoms.7. The composition of claim 1 , where the composition includes from about 5 to about 50 wt % of the vinyl-terminated polyethylene and from about 50 to about 95 wt % of the comb polyolefin.8. The composition of claim 1 , where the composition includes from about 15 to about 40 ...

POLYMER TECHNOLOGY FOR USE IN FLOW REACTORS

Techniques regarding catalyzing one or more ring-opening polymerizations within one or more flow reactors using one or more organometallic bases are provided. For example, one or more embodiments described herein can comprise a method, which can include forming a polymer, via a ring-opening polymerization within a flow reactor, from a cyclic monomer in the presence of an organometallic base and a primary alcohol initiator. 1. A method , comprising:forming a polymer, via a ring-opening polymerization within a flow reactor, from a cyclic monomer in the presence of an organometallic base and a primary alcohol initiator.2. The method of claim 1 , wherein the cyclic monomer is selected from the group consisting of: an epoxide claim 1 , an episulfide claim 1 , an aziridine claim 1 , a thiolactone claim 1 , a cyclic ester claim 1 , a cyclic amide claim 1 , a cyclo-siloxane claim 1 , a cyclic carbonate claim 1 , a cyclic carbosilane claim 1 , and a cyclic phosphoester.3. The method of claim 1 , wherein the organometallic base is selected from the group consisting of an organometallic amide and an organometallic alkoxide.4. The method of claim 1 , wherein the cyclic monomer is ε-valerolactone claim 1 , and wherein the organometallic base is selected from the group consisting of potassium t-butoxide and potassium bis(trimethylsilyl)amide.5. The method of claim 1 , wherein the cyclic monomer is ε-caprolactone claim 1 , and wherein the organometallic base is selected from the group consisting of potassium t-butoxide and potassium bis(trimethylsilyl)amide.6. The method of claim 1 , wherein the organometallic base catalyzes the ring-opening polymerization via a deprotonation of the primary alcohol.7. The method of claim 1 , further comprising:forming a block copolymer, via a second ring-opening polymerization within the flow reactor, from the polymer in the presence of a second cyclic monomer and an organocatalyst.8. The method of claim 7 , further comprising:switching an active ...

STEREOREGULAR DIBLOCK POLYBUTADIENES HAVING A 1,4-CIS/SYNDIOTACTIC 1,2 STRUCTURE FROM STEREOSPECIFIC POLYMERIZATION

Stereoregular diblock polybutadiene composed of a polybutadiene block having a 1,4-cis structure and a polybutadiene block having a syndiotactic 1,2 structure. Said stereoregular diblock polybutadiene can be advantageously used in both the footwear industry (for example, in the production of soles for shoes) and in the production of tires for motor vehicles and/or trucks. 2. The stereoregular diblock polybutadiene according to claim 1 , wherein said stereoregular diblock polybutadiene has the following characteristics:{'sup': −1', '−1, 'upon infrared analysis (FT-IR), bands typical of the 1,4-cis and 1,2 sequences centered at 737 cmand at 911 cm, respectively;'}{'sup': '13', 'upon C-NMR analysis; signals characteristic of the junctions between the polybutadiene block having a 1,4-cis structure and the polybutadiene block having a 1,2 structure at 30.7 ppm, at 25.5 ppm and at 41.6 ppm.'}3. The stereoregular diblock polybutadiene according to claim 1 , wherein claim 1 , in said stereoregular diblock polybutadiene:{'sub': m', 'c, 'the block having a 1,4-cis structure has a glass transition temperature (TO lower than or equal to −100° C., a melting point (T) lower than or equal to −2° C., and a crystallization temperature (T) lower than or equal to −25° C.,'}{'sub': g', 'm', 'c, 'the block having a 1,2 syndiotactic structure has a glass transition temperature (T) lower than or equal to −10° C., a melting point (T) higher than or equal to 70° C., and a crystallization temperature (T) higher than or equal to 55° C.'}4. The stereoregular diblock polybutadiene according to claim 1 , wherein said stereoregular diblock polybutadiene has a polydispersion index (PDI) corresponding to a M/Mratio (M=weight average molecular weight; M=number average molecular weight) ranging from 1.9 to 2.2.5. The stereoregular diblock polybutadiene according to claim 1 , wherein in said stereoregular diblock polybutadiene claim 1 , the polybutadiene block having a 1 claim 1 ,4-cis structure is ...

STEREOREGULAR DIBLOCK POLYBUTADIENES HAVING A 1,4-CIS/SYNDIOTACTIC 1,2 STRUCTURE FROM STEREOSPECIFIC POLYMERIZATION

Stereoregular diblock polybutadiene composed of a polybutadiene block having a 1,4-cis structure and a polybutadiene block having a syndiotactic 1,2 structure. Said stereoregular diblock polybutadiene can be advantageously used in both the footwear industry (for example, in the production of soles for shoes) and in the production of tires for motor vehicles and/or trucks. 1: A stereoregular diblock polybutadiene , having formula (I):{'br': None, 'sub': 1', '2, 'PB—PB\u2003\u2003(I)'} [{'sub': '1', 'PBrepresents a polybutadiene block comprising a 1,4-cis structure;'}, {'sub': '2', 'PBrepresents a polybutadiene block comprising a 1,2 syndiotactic structure; and'}], 'whereinthe stereoregular diblock polybutadiene is essentially free of 1,4-trans units.2: The stereoregular diblock polybutadiene according to claim 1 , which{'sup': −1', '−1, 'upon infrared analysis (FT-IR), has bands typical of the 1,4-cis and 1,2 sequences centered at 737 cmand 911 cm, respectively; and'}{'sup': '13', 'upon C-NMR analysis, has signals characteristic of junctions between the polybutadiene block comprising a 1,4-cis structure and the polybutadiene block comprising a 1,2 structure at 30.7 ppm, 25.5 ppm and 41.6 ppm.'}3: The stereoregular diblock polybutadiene according to claim 1 , wherein{'sub': g', 'm', 'c, 'the block comprising a 1,4-cis structure has a glass transition temperature (T) lower than or equal to −100° C., a melting point (T) lower than or equal to −2° C., and a crystallization temperature (T) lower than or equal to −25° C.;'}{'sub': g', 'm', 'c, 'the block comprising a 1,2 syndiotactic structure has a glass transition temperature (T) lower than or equal to −10° C., a melting point (T) higher than or equal to 70° C., and a crystallization temperature (T) higher than or equal to 55° C.'}4: The stereoregular diblock polybutadiene according to claim 1 , which has a polydispersion index (PDI) corresponding to a M/Mratio ranging from 1.9 to 2.2 claim 1 , where Mis a weight average ...

POLYMERIC ANION-CONDUCTING MEMBRANE

The present invention provides compounds, especially polymeric compounds, having at least one imidazole and/or imidazolium structural unit, a process for preparation thereof and for the use thereof. 2. The compound according to claim 1 , wherein the compound is an oligomer or polymer having at least 2 units of the formula (Ia) or (Ib).3. The compound according to claim 1 , wherein Rand Rrepresent a polymer radical.4. The compound according to claim 1 , wherein at least one of the Ror Rradicals is an oligomer or polymer radical attached via an oxygen atom to the ring carbon atom.11. The process according to claim 10 , having a process step in which the compound of the formula (Ia) is reacted with a compound of the formula (Ia′) to give an oligomer of the formula (Ia″).14. The process according to claim 13 , having a process step of in which the compound of the formula (Ia) is reacted with a compound of the formula (Ia′) to give an oligomer of the formula (Ia″) and reacting the oligomer of the formula (Ia″) with an alkylating reagent claim 13 , preferably methylating reagent.15. An anion-conducting membrane comprising the compound according to .16. (canceled)17. An electrolyzer comprising the compound according to .{'sub': 1', '2', '3', '4, 'wherein R, R, Rand Rare the same or different and are —H or any desired group,'}{'sub': 5', '11, 'Rand Rare the same or different and are an alkyl or perfluoroalkyl radical,'}{'sub': 6', '10, 'Rand Rare the same or different and are an oligomer or polymer radical and'}{'sub': 7', '8', '9, 'R, Rand Rare the same or different and are —H or any desired group.'}18. The compound according to claim 1 , wherein{'sub': 1', '2', '3', '4, 'R, R, Rand Rare —H, and'}{'sub': 7', '8', '9, 'R, Rand Rare —H.'}19. The compound according to claim 5 , whereinL=from 1 to 9.20. The compound according to claim 6 , whereinL=from 1 to 9, andL′=3 to 9.21. The compound according to claim 8 , whereinL=from 1 to 9, andn=5 to 50. This application is a 35 U.S. ...

Direct conversion of a polymerization reaction catalyzed by a Ziegler-type catalyst into one catalyzed by a chromium-based catalyst

A method of converting a continuous olefin polymerization reaction catalyzed by a Ziegler-type catalyst into one catalyzed by a chromium-based catalyst, without the need of emptying and recharging the polymerization reactor, by adding a hydroxyl-containing compound to the reactor containing the Ziegler-type catalyst to interact with such catalyst before the chromium-based catalyst is introduced into the reactor.

Direct conversion of a polymerization reaction catalyzed by a Ziegler-type catalyst into one catalyzed by a chromium-based catalyst

A method of converting a continuous olefin polymerization reaction catalyzed by a Ziegler-type catalyst into one catalyzed by a chromium-based catalyst, without the need of emptying and recharging the polymerization reactor, by adding a hydroxyl-containing compound to the reactor containing the Ziegler-type catalyst to interact with such catalyst before the chromium-based catalyst is introduced into the reactor.

Processo multi-estágios para a (co) polimerização de olefinas

Verfahren zur herstellung von polymerisaten des ethylens

Process for transitioning

The present invention relates to a process for transitioning from the production of a first polymer to the production of a second polymer in a gas phase fluidised bed or stirred bed reactor, said process comprising the steps of: a) Conducting a first polymerisation reaction in the reactor using a first polymerisation catalyst system to produce a first polymer, b) Stopping the first polymerisation reaction and removing at least the majority of the polymer in the reactor, c) Introducing into the reactor a seed-bed comprising at least 50ppm of contaminants, wherein the seedbed has been maintained under at least 50ppm but less than 500ppm of contaminants during storage d) Treating the seed-bed in the reactor to reduce the amount of contaminants, e) Conducting a second polymerisation reaction in the reactor to produce a second polymer.

Process for transitioning

Process for transitioning from the production of a first polymer to the production of a second polymer in a gas phase fluidized bed or stirred bed reactor by a) conducting a first polymerization reaction in the reactor using a first polymerization catalyst system to produce a first polymer, b) stopping the first polymerization reaction and removing at least the majority of the polymer in the reactor, c) introducing into the reactor a seed-bed containing at least 50 ppm of contaminants, in which the seedbed is maintained under at least 50 ppm but less than 500 ppm of contaminants during storage, and d) treating the seed-bed in the reactor to reduce the amount of contaminants. Step e) involves conducting a second polymerization reaction in the reactor to produce a second polymer.

Process for stopping and restarting polymerisation

Process for stopping and restarting a polymerization in a system having a gas phase fluidized bed or stirred bed reactor, a degassing vessel and a seedbed storage silo, by conducting a first polymerization in the reactor using a polymerization catalyst to produce a first polymer, stopping the polymerization and removing the first polymer from the reactor to the degassing vessel, and either: introducing from the seedbed storage silo into the reactor a different seed-bed compatible with a second polymerization, passing to the seedbed storage silo the first polymer from the degassing vessel to form a new seedbed in the storage silo, and conducting the second polymerization in the reactor to produce a second polymer; or passing to the reactor at least a portion of the first polymer from the degassing vessel to thereby form a new seedbed in the reactor, and conducting a polymerization in the reactor to produce polymer.

transition process

PROCESSO PARA REALIZAÇÃO DE TRANSIÇÃO A presente invenção se refere a um processo para realizar a transição a partir da produção de um primeiro polímero para a produção de um segundo polímero em um leito fluidizado de fase gasosa ou reator de leito agitado, dito processo compreendendo as etapas de: a) realização de uma primeira reação de polimerização no reator utilizando um primeiro sistema catalisador de polimerização para a produção de um primeiro polímero, b) parada da primeira reação de polimerização e remoção pelo menos da maior parte do polímero no reator, c) introdução no reator de um leito de sementes que compreende, pelo menos, 50 ppm de contaminantes, onde o leito de sementes foi mantido abaixo de pelo menos 50 ppm, porém menos de 500 ppm de contaminantes durante o armazenamento, d) tratamento do leito de sementes no reator para reduzir a quantidade de contaminantes, e) realização de uma segunda reação de polimerização no reator, para produzir um segundo polímero. PROCESS FOR CARRYING OUT THE TRANSITION The present invention relates to a process for carrying out the transition from the production of a first polymer to the production of a second polymer in a gas phase fluidized bed or stirred bed reactor, said process comprising the steps of: a) carrying out a first polymerization reaction in the reactor using a first polymerization catalyst system to produce a first polymer, b) stopping the first polymerization reaction and removing at least most of the polymer in the reactor, c) introduction into the reactor of a seed bed comprising at least 50 ppm of contaminants, where the seed bed was kept below at least 50 ppm, but less than 500 ppm of contaminants during storage, d) treatment of the bed of seeds in the reactor to reduce the amount of contaminants, e) carrying out a second polymerization reaction in the reactor to produce a second polymer.

Multistage process for the (CO) polymerization of olefins

Multistage process for the polymerization of olefins CH 2 ═CHR, where R is hydrogen or an alkyl, cycloalkyl or aryl radical with 1-10 carbon atoms, comprising two stages of polymerization. In a first stage, in the presence of a titanium or a vanadium catalyst and working in one or more reactors, an olefinic polymer with particular values of porosity is prepared; in a second stage, in the presence of the said porous polymer and a metallocene compound and/or their reaction products, one or more olefins, that are equal to or different from those polymerized in the first stage, are polymerized in one or more reactors.

Process for producing polybutadiene rubber with enhanced mechanical strength

PROCESS FOR PRODUCING POLYBUTADIENE RUBBER WITH ENHANCED MECHANICAL STRENGTH ABSTRACT OF THE DISCLOSURE A polybutadiene rubber having an enhanced mechanical strength is produced in such a manner that the contents of water and carbon disulfide in a solution of 1,3-butadiene and carbon disulfide in an inert organic solvent is control-led to 0.2 to 5 m moles and 20 m moles or less, respectively, per liter of the 1,3-butadiene-carbon disulfide solution; a first polymerization mixture is prepared from the controlled 1,3-butadiene-carbon disulfide solution, an organic aluminum compound of the formula Al RnX3-n, wherein R = C1-6 alkyl, phenyl, or cycloalkyl, X = halogen, and n = 1.5-2.0, and a cobalt compound, for example, by aging a mixture of the controlled 1,3-butadiene-carbon disulfide solution with the aluminum compound for at least one minutes and then by admixing the aged mixture with the cobalt compound; the first polymerization mixture is subjected to a cis-1,4--polymerization; a second polymerization comprising the resultant cis-1,4-polybutadiene, non-reacted 1,3-butadiene, the inert organic solvent, an organic aluminum compound of the formula AIR3, a cobalt compound, and the carbon disul-fide is subjected to a 1,2-polymerization to produce a polybutadiene rubber consisting essentially of 5% to 30% by weight of a boiling n-hexane-insoluble fraction and 70% to 95% by weight of a boiling n-hexane-soluble fraction thereof; and after the 1,2-polymerization is shortstopped, the resultant polybutadiene rubber is isolated from the 1,2-polymerization mixture.

Direct conversion of a polymerization reaction catalyzed by a ziegler-type catalyst into one catalyzed by a chromium-based catalyst

ABSTRACT OF THE DISCLOSURE A method of converting a continuous olefin polymerization reaction catalyzed by a Ziegler-type catalyst into one catalyzed by a chromium-based catalyst, without the need of emptying and re-charging the polymerization reactor, by adding a hydroxyl-containing compound to the reactor con-taining the Ziegler-type catalyst to interact with such catalyst before the chromium-based catalyst is introduced into the reactor. D-12,981-1

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Chromium and ziegler catalysed polymerisation process

Direct conversion of a polymerization reaction catalyzed by a ziegler-type catalyst into one catalyzed by a chromium-based catalyst

Direct conversion of a polymerization reaction catalyzed by a ziegler-type catalyst into one catalyzed by a chromium-based catalyst

Process for direct transforming polymer reactions from ziegler-type catalyst onto catalyst based on chrome

Direkt omvandling av en polymerisationsreaktion som katalyseras av en ziegler-typs katalysator till en polymerisationsreaktion som katalyseras av en krombaserad katalysator.

Process for direct conversion of a continuous polymerization reaction catalyzed by a ziegler-type catalyst into one catalyzed by a chromium-based catalyst

Polymerisation of ethylene

1,205,635. Ethylene polymerization. IMPERIAL CHEMICAL INDUSTRIES Ltd. 29 April, 1968 [12 May, 1967], No. 22184/67. Heading C3P. The continuous polymerization of ethylene in two or more zones comprises passing ethylene through a first polymerization zone at a pressure of not less than 1600 atmospheres and a temperature of not less than 125‹ C. in the presence of a Ziegler type initiator and passing the mixture of polymer and unreacted monomer to a second zone at a pressure of at least 1600 atmospheres and a temperature higher than the lowest temperature in the first zone in the presence of a free-radical forming initiator, the combined conditions of temperature and pressure being such that the polymerization reaction takes place in a single fluid phase and the reaction mixture remains as a single fluid phase until removal from said zone. In the first zone the temperature is preferably from 145‹ to 220‹ C., and the residence time is not more than 6 minutes. A suitable Ziegler type initiator is one which causes at least 3,000 moles of ethylene to be polymerized per mole of Group 4A, 5A or 6A metal compound component of the initiator. The Ziegler type initiator which may have a particle size not exceeding 5 microns, may be protracted by polymerizing it in contact with an unbranched α-olefin containing at least 6 carbon atoms. A free radical forming initiator active at the temperature of the first zone, may be introduced into the first zone. Chain transfer agents, such as hydrogen, paraffins or α-olefins, may be present in the zones. In the example, ethylene containing hydrogen as a modifier, is polymerized in a two zone reaction. The Ziegler initiator was formed by mixing in pentamethyl heptane, aluminium diethyl chloride and titanium trichloride, and exposing this mixture to hexene-1, resulting in the formation on the catalyst of polyhexene. The free radical forming catalyst was tertiary butyl perbenzoate.

Direkt omvandling av en polymerisationsreaktion som katalyseras av en ziegler-typs katalysator till en polymerisationsreaktion som katalyseras av en krombaserad katalysator.

DIRECT MANAGEMENT AV EN POLYMERIZATIONSREAKTION SOM CATALYST AV EN ZIEGLER-TYPSKATALYSATOR TILLEN POLYMERISATIONSREAKTION SOM CATALYST AV EN KROMBASERAD CATALYST

Process for direct conversion of a continuous polymerization reaction catalyzed by a ziegler-type catalyst into one catalyzed by a chromium-based catalyst

Direkt omvandling av en polymerisationsreaktion som katalyseras av en ziegler-typskatalysator tillen polymerisationsreaktion som katalyseras av en krombaserad katalysator

Chromium and ziegler catalysed polymerisation process

A method of converting a continuous olefin polymerization reaction catalyzed by a Ziegler-type catalyst into one catalyzed by a chromium-based catalyst, without the need of emptying and recharging the polymerization reactor, by adding a hydroxyl-containing compound to the reactor containing the Ziegler-type catalyst to interact with such catalyst before the chromium-based catalyst is introduced into the reactor.

转换方法

本发明涉及在气相流化床或搅拌床反应器中从第一聚合物的生产转换到第二聚合物的生产的方法，所述方法包含以下步骤：a)在反应器中使用第一聚合催化剂体系实施第一聚合反应以生产第一聚合物，b)停止第一聚合反应并除去反应器中至少大多数聚合物，c)将包含至少50ppm污染物的种床引入反应器，其中在贮藏期间将种床保持在至少50ppm但少于500ppm的污染物下，d)处理反应器中的种床以减少污染物的量，e)在所述反应器中实施第二聚合反应以生产第二聚合物。

转换方法

本发明涉及在气相流化床或搅拌床反应器中从第一聚合物的生产转换到第二聚合物的生产的方法，所述方法包含以下步骤：a)在反应器中使用第一聚合催化剂体系实施第一聚合反应以生产第一聚合物，b)停止第一聚合反应并除去反应器中至少大多数聚合物，c)将包含至少50ppm污染物的种床引入反应器，其中在贮藏期间将种床保持在至少50ppm但少于500ppm的污染物下，d)处理反应器中的种床以减少污染物的量，e)在所述反应器中实施第二聚合反应以生产第二聚合物。

Procedimento per la preparazione di polimeri amorfi del propilene

PROCESSO MULTISTADIO PER LA POLIMERIZZAZIONE DI OLEFINE CH2=CHR, DOVE H E' IDROGENO O UN RADICALE ALCHILICO, CICLOALCHILICO O ARILICO AVENTE 1-10 ATOMI DI CARBONIO, COMPRENDENTE DUE STADI DI POLIMERIZZAZIONE. IN UN PRIMO STADIO, IN PRESENZA DI UN CATALIZZATORE AL TITANIO O AL VANADIO ED OPERANDO IN UNO O PIU' REATTORI, VIENE PREPARATO UN POLIMERO OLEFITICO AVENTE PARTICOLARI VALORI DI POROSITA'; IN UN SECONDO STADIO, IN PRESENZA DI DETTO POLIMERO POROSO E DI UN COMPOSTO METALLOCENICO E/O DI LORO DI REAZIONE, VENGONO POLIMERIZZATE, IN UNO O PIU' REATTORI, UNA O PIU' OLEFINE UGUALI O DIVERSE DA QUELLE POLIMERIZZATE NEL PRIMO STADIO.

Functionalized ethylene/alpha-olefin interpolymer compositions

The invention relates to functionalized interpolymers derived from base olefin interpolymers, which are prepared by polymerizing one or more monomers or mixtures of monomers, such as ethylene and one or more comonomers, to form an interpolymer products having unique physical properties. The functionalized olefin interpolymers contain two or more differing regions or segments (blocks), resulting in unique processing and physical properties.

Catalyst composition comprising shuttling agent for tactic/ atactic multi-block copolymer formation

Copolymers, especially multi-block copolymer containing therein two or more segments or blocks differing in tacticity, are prepared by polymerizing propylene, 4-methyl-1-pentene, or another C 4-8 α-olefin in the presence of a composition comprising the admixture or reaction product resulting from combining: (A) a first metal complex olefin polymerization catalyst, (B) a second metal complex olefin polymerization catalyst capable of preparing polymers differing in tacticity from the polymer prepared by catalyst (A) under equivalent polymerization conditions, and (C) a chain shuttling agent.

Подкладки для колпачков, крышки и уплотнители из полиблочных полимеров

ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß RU (19) (11) 2007 134 343 (13) A (51) ÌÏÊ C09K 3/10 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÇÀßÂÊÀ ÍÀ ÈÇÎÁÐÅÒÅÍÈÅ (21), (22) Çà âêà: 2007134343/04, 15.03.2006 (71) Çà âèòåëü(è): ÄÀÓ ÃËÎÁÀË ÒÅÊÍÎËÎÄÆÈÇ ÈÍÊ. (US) (30) Êîíâåíöèîííûé ïðèîðèòåò: 17.03.2005 US PCT/US2005/008917 (43) Äàòà ïóáëèêàöèè çà âêè: 20.03.2009 Áþë. ¹ 8 (87) Ïóáëèêàöè PCT: WO 2006/113000 (26.10.2006) R U (54) ÏÎÄÊËÀÄÊÈ ÄËß ÊÎËÏÀ×ÊÎÂ, ÊÐÛØÊÈ È ÓÏËÎÒÍÈÒÅËÈ ÈÇ ÏÎËÈÁËÎ×ÍÛÕ ÏÎËÈÌÅÐΠ(57) Ôîðìóëà èçîáðåòåíè 1. Óïëîòíèòåëü, ñîäåðæàùèé êîìïîçèöèþ èëè ïîëó÷àåìûé èç êîìïîçèöèè, âêëþ÷àþùåé: (A) îò ïðèáëèçèòåëüíî 80 äî ïðèáëèçèòåëüíî 97,5 ìàñ.% îò îáùåé ìàññû êîìïîíåíòîâ (A), (B) è (C), ïî ìåíüøåé ìåðå, îäíîãî èíòåðïîëèìåðà ýòèëåíà/α-îëåôèíà; ãäå èíòåðïîëèìåð ýòèëåíà/α-îëåôèíà ïðåäñòàâë åò ñîáîé áëîê-èíòåðïîëèìåð è: (a) èìååò Mw/Mn îò ïðèáëèçèòåëüíî 1,7 äî ïðèáëèçèòåëüíî 3,5, ïî ìåíüøåé ìåðå, îäíó òåìïåðàòóðó ïëàâëåíè , Tïë, â ãðàäóñàõ Öåëüñè , è ïëîòíîñòü, d, â ãðàììàõ/êóáè÷åñêèé ñàíòèìåòð, ãäå ÷èñëîâûå çíà÷åíè Tïë è d ñîîòâåòñòâóþò çàâèñèìîñòè: Tïë>-2002,9+4538,5(d)-2422,2(d) 2; èëè (b) èìååò Mw/Mn îò ïðèáëèçèòåëüíî 1,7 äî ïðèáëèçèòåëüíî 3,5 è õàðàêòåðèçóåòñ òåïëîòîé ïëàâëåíè , ∆H, â Äæ/ã, è èçìåíåíèåì âåëè÷èíû, ∆T, â ãðàäóñàõ Öåëüñè , îïðåäåëåííîé êàê ðàçíèöà òåìïåðàòóð ìåæäó íàèâûñøèì ïèêîì ÄÑÊ è íàèâûñøèì ïèêîì CRYSTAF, ãäå ÷èñëîâûå çíà÷åíè ∆T è ∆H óäîâëåòâîð þò ñëåäóþùèì çàâèñèìîñò ì: ∆T>-0,1299(∆H)+62,81 äë ∆H áîëåå íóë è äî 130 Äæ/ã, ∆T≥48°C äë ∆H áîëåå 130 Äæ/ã, ãäå ïèê CRYSTAF îïðåäåë þò ñ èñïîëüçîâàíèåì, ïî ìåíüøåé ìåðå, 5% ñîâîêóïíîãî ïîëèìåðà, à åñëè èäåíòèôèöèðóåìîìó ïèêó CRYSTAF ñîîòâåòñòâóþò ìåíåå 5% ïîëèìåðà, òîãäà òåìïåðàòóðà CRYSTAF ðàâíà 30°C; èëè (c) õàðàêòåðèçóåòñ óïðóãèì âîññòàíîâëåíèåì, Re, â ïðîöåíòàõ ïðè ðàñò æåíèè 300% è 1 öèêëå, èçìåð åìîì íà ïîëó÷åííîé ïð ìûì ôîðìîâàíèåì ïëåíêå èíòåðïîëèìåðà ýòèëåíà/α-îëåôèíà, è èìååò ïëîòíîñòü, d, â ãðàììàõ/êóáè÷åñêèé ñàíòèìåòð, ãäå ÷èñëîâûå Ñòðàíèöà: 1 RU A 2 0 0 7 1 3 ...

Stretch fabrics with wrinkle resistance and garment

Compositions having good wrinkle resistance and other properties when made into garments that can be made from an ethylene multi-block copolymer. The resulting fabrics and garments often have good chemical resistance, heat-resistances, and are dimensionally stable.

POLYMER COMPOSITION AND THERMOFORMED MOLDED ARTICLE

“composição de polímero e artigo moldado termoformado”. esta invenção refere-se a composições de polímeros compreendendo pelo menos um interpolímero de etileno/a- olefina e polipropileno ramificado e/ou de alta resistência de fundido, métodos para fazer as composições de polímeros, e produtos moldados, sobremmoldados, extrudados em perfis ou termoformados feitos das composições de polímeros. as composições de polímeros poderão ter propriedades de brilho de folha pós-termoformadas ou pós-extrudadas (perfis) reduzidas e/ou propriedades de resistência a arranhaduras melhoradas. “polymer composition and thermoformed molded article”. This invention relates to polymer compositions comprising at least one interpolymer of ethylene/α-olefin and branched and/or high melt strength polypropylene, methods of making the polymer compositions, and products molded, overmoulded, extruded into profiles or thermoforms made from polymer compositions. the polymer compositions may have reduced post-thermoformed or post-extruded sheet gloss properties (profiles) and/or improved scratch resistance properties.

Stereoregular diblock polybutadienes having a 1,4-cis/syndiotactic 1,2 structure from stereospecific polymerization

Stereoregular diblock polybutadiene composed of a polybutadiene block having a 1,4-cis structure and a polybutadiene block having a syndiotactic 1,2 structure. Said stereoregular diblock polybutadiene can be advantageously used in both the footwear industry (for example, in the production of soles for shoes) and in the production of tires for motor vehicles and/or trucks.

Stereoregular diblock polybutadienes having a 1,4-cis/syndiotactic 1,2 structure from stereospecific polymerization

Stereoregular diblock polybutadiene composed of a polybutadiene block having a 1,4-cis structure and a polybutadiene block having a syndiotactic 1,2 structure. Said stereoregular diblock polybutadiene can be advantageously used in both the footwear industry (for example, in the production of soles for shoes) and in the production of tires for motor vehicles and/or trucks.

Polyolefin compositions

A composition comprising vinyl-terminated polyethylene having an Mn from about 200 g/mol to about 10,000 g/mol; and a comb polyolefin having polyethylene arms attached to a random copolymer backbone, said backbone including units derived from an alpha-olefin having 3 or more carbon atoms, where the polyethylene arms have an Mn from about 200 g/mol to about 10,000 g/mol, and where the comb polyolefin has an Mp from about 7,500 to about 400,000 g/mol.

包含聚烯烃‑聚苯乙烯嵌段共聚物的有机锌化合物及其制备方法

本发明涉及在两末端包含苯乙烯类共聚物或聚烯烃‑聚苯乙烯嵌段共聚物的有机锌化合物。并且，本发明涉及利用过渡金属催化剂配位聚合烯烃单物来制备中间物后，通过在所述中间体投入烷基锂化合物、胺配体及苯乙烯类单体来进行阴离子聚合的所述有机锌化合物的制备方法。由此，本发明可提供以一步(one‑pot)方式直接从烯烃单体和苯乙烯单体制备产业上有用的苯乙烯类共聚物或聚烯烃‑聚苯乙烯嵌段共聚物的方法。

Organic zinc compound comprising polyolefin-polystyrene block copolymer, and method for preparing the same

The present invention relates to an organic zinc compound comprising a styrene-based polymer or a polyolefin-polystyrene block copolymer at both ends. Also, the present invention relates to a method for preparing the organic zinc compound, the method preparing an intermediate by coordination-polymerizing an olefin monomer using a transition metal catalyst, and then performing anionic polymerization by inserting an alkyllithium compound, an amine ligand, and a styrene-based monomer into the intermediate. Accordingly, the present invention can provide a method for preparing a commercially useful styrene-based polymer or polyolefin-polystyrene block copolymer directly from an olefin monomer and a styrene monomer in a one-pot manner.

包含聚烯烃-聚苯乙烯嵌段共聚物的有机锌化合物及其制备方法

本发明涉及在两末端包含苯乙烯类共聚物或聚烯烃‑聚苯乙烯嵌段共聚物的有机锌化合物。并且，本发明涉及利用过渡金属催化剂配位聚合烯烃单物来制备中间物后，通过在所述中间体投入烷基锂化合物、胺配体及苯乙烯类单体来进行阴离子聚合的所述有机锌化合物的制备方法。由此，本发明可提供以一步(one‑pot)方式直接从烯烃单体和苯乙烯单体制备产业上有用的苯乙烯类共聚物或聚烯烃‑聚苯乙烯嵌段共聚物的方法。

Polyolefin compositions

A composition comprising vinyl-terminated polyethylene having an Mn from about 200 g/mol to about 10,000 g/mol; and a comb polyolefin having polyethylene arms attached to a random copolymer backbone, said backbone including units derived from an alpha-olefin having 3 or more carbon atoms, where the polyethylene arms have an Mn from about 200 g/mol to about 10,000 g/mol, and where the comb polyolefin has an Mp from about 7,500 to about 400,000 g/mol.

Multistage (co) polymerization method of olefins

두단계의 중합 반응을 포함하는 올레핀류 CH 2 =CHR(여기에서 R은 수소, 탄소수 1 내지 10의 알킬, 시클로알킬 또는 아릴 라디칼임)의 다단계 중합방법. 티타늄 또는 바나듐 촉매의 존재하에 하나 이상의 반응기에서 조작되는 첫번째 단계에서 특정한 값을 다공도를 가진 올레핀계 중합체가 제조되며; 상기 다공성 중합체 및 메탈로센 화합물 및/또는 이들의 반응 생성물의 존재하에 첫번째 단계에서 중합된 것과 동일하거나 상이한 하나 이상의 올레핀류가 하나 이상의 반응기에서 중합된다. A multistage polymerization process of olefins CH 2 = CHR, wherein R is hydrogen, alkyl having 1 to 10 carbon atoms, cycloalkyl or aryl radicals, including two stages of polymerization. In the first stage of operation in one or more reactors in the presence of a titanium or vanadium catalyst an olefinic polymer having a specific value porosity is produced; One or more olefins, which are the same or different than those polymerized in the first step in the presence of the porous polymer and the metallocene compound and / or their reaction product, are polymerized in one or more reactors.

STEREOREGULAR DI-BLOCK POLYBUTADIENS WITH STRUCTURE 1,4-CIS / 1,2 SINDIOTATTICA BY STEREOSPECIFIC POLYMERIZATION

STEREOREGULAR DI-BLOCK POLYBUTADIENS WITH STRUCTURE 1,4-CIS / 1,2 SINDIOTATTICA BY STEREOSPECIFIC POLYMERIZATION

Process for producing polybutadiene rubber with enhanced mechanical strength

A polybutadiene rubber having an enhanced mechanical strength is produced in such a manner that the contents of water and carbon disulfide in a solution of 1,3-butadiene and carbon disulfide in an inert organic solvent is controlled to 0.2 to 5 m moles and 20 m moles or less, respectively, per liter of the 1,3-butadiene-carbon disulfide solution; a first polymerization mixture is prepared from the controlled 1,3-butadiene-carbon disulfide solution, an organic aluminum compound of the formula Al R n X 3-n , wherein R=C 1-6 alkyl, phenyl, or cycloalkyl, X=halogen, and n=1.5-2.0, and a cobalt compound, for example, by aging a mixture of the controlled 1,3-butadiene-carbon disulfide solution with the aluminum compound for at least one minute and then by admixing the aged mixture with the cobalt compound; the first polymerization mixture is subjected to a cis-1,4-polymerization; a second polymerization comprising the resultant cis-1,4-polybutadiene, non-reacted 1,3-butadiene, the inert organic solvent, an organic aluminum compound of the formula AIR 3 , a cobalt compound, and the carbon disulfide is subjected to a 1,2-polymerization to produce a polybutadiene rubber consisting essentially of 5% to 30% by weight of a boiling n-hexane-insoluble fraction and 70% to 95% by weight of a boiling n-hexane-soluble fraction thereof; and after the 1,2-polymerization is shortstopped, the resultant polybutadiene rubber is isolated from the 1,2-polymerization mixture.

Polymer blends from interpolymers of ethylene/alpha-olefin with improved compatibility

Disclosed herein are polymer blends comprising at least one ethylene/α-olefin interpolymer and two different polyolefins which can be homopolymers. The ethylene/α-olefin interpolymers are block copolymers comprising at least a hard block and at least a soft block. In some embodiments, the ethylene/α-olefin interpolymer can function as a compatibilizer between the two polyolefins which may not be otherwise compatible. Methods of making the polymer blends and molded articles made from the polymer blends are also described.

Functionalized ethylene/alpha-olefin interpolymer compositions

The invention relates to functionalized interpolymers derived from base olefin interpolymers, which are prepared by polymerizing one or more monomers or mixtures of monomers, such as ethylene and one or more comonomers, to form an interpolymer products having unique physical properties. The functionalized olefin interpolymers contain two or more differing regions or segments (blocks), resulting in unique processing and physical properties.

Viscosity index improver for lubricant compositions

A lubricant composition comprises a base oil and a viscosity modifier including an ethylene/α-olefin interpolymer. The ethylene/α-olefin interpolymer is a block copolymer having at least a hard block and at least a soft block. The soft block comprises a higher amount of comonomers than the hard block. The block copolymer has a number of unique characteristics disclosed here. Such block copolymers offer the possibility of improved low temperature performance and flexibility in formulating motor oil, gear lubricants and greases, etc.

Catalyst composition comprising shuttling agent for ethylene multi-block copolymer formation

A composition for use in forming a multi-block copolymer, said copolymer containing therein two or more segments or blocks differing in chemical or physical properties, a polymerization process using the same, and the resulting polymers, wherein the composition comprises the admixture or reaction product resulting from combining: (A) a first metal complex olefin polymerization catalyst, (B) a second metal complex olefin polymerization catalyst capable of preparing polymers differing in chemical or physical properties from the polymer prepared by catalyst (A) under equivalent polymerization conditions, and (C) a chain shuttling agent.

Olefin block compositions for stretch fabrics with wrinkle resistance

Compositions having good wrinkle resistance and other properties when made into garments an be made from an ethylene multi-block copolymers. The resulting fabrics and garments often have good chemical resistance, heat-resistances, and are dimensionally stable.

Cap Liners, Closures, and Gaskets from Multi-Block Polymers

A polymer composition comprises at least an ethylene/α-oleiln interpolymer and at least one other polymer. The other polymer can be selected from a second ethylene/α-olefin interpolymer, an elastomer, a polyolefin, a polar polymer, and an ethylene/carboxylic acid interpolymer or ionomer thereof. The ethylene/α-olefin interpolymer is a block copolymer having at least a hard block and at least a soft block. The soft block comprises a higher amount of comonomers than the hard block. The block interpolymer has a number of unique characteristics disclosed here. Also provided are gaskets, bottle cap liners, and closures that comprise or obtained from a compositon comprising at least one ethylene/α-olefin interpolymer and at least one polyolefin. The gaskets are capable of compression sealing various containers, without contaminating the contents. Liquid containers particularly benefit from the use of the novel gasket materials disclosed herein.

Compositions of Ethylene/Alpha-Olefin Multi-Block Interpolymer for Elastic Films and Laminates

This invention relates to polyolefin compositions. In particular, the invention pertains to elastic polymer compositions that can be more easily processed on cast film lines, extrusion lamination or coating lines due to improved resistance to draw resonance. The compositions of the present invention preferably comprise an elastomeric polyolefin resin and a high pressure low density type resin.

Adhesive and Marking Compositions Made From Interpolymers of Ethylene/Alpha-Olefins

An adhesive composition comprises: (i) at least one ethylene/α-olefin interpolymer, (ii) at least one tackifÊer; and (iii) optionally at least one additive, such as a plasticizer, wax and antioxidant. Preferably, the ethylene/α-olefin interpolymer has a M w /M n from about 1.7 to about 3.5, at least one melting point, T m , in degrees Celsius, and a density, d, in grams/cubic centimeter, wherein the numerical values of T m and d correspond to the relationship: T m ≧858.91−1825.3( d )+1112.8( d ) 2 . The composition has relatively higher SAFT temperature and can be used in hot melt adhesives pressure-sensitive adhesives, and thermoplastic marking paints.

Olefin block compositions for heavy weight stretch fabrics

Heavy weight stretch fabrics comprising ethylene/α-olefin interpolymer are described. The fabric often has a weight of at least 10 ounces per square yard measured according to ASTM 3776 and has a stretch of at least 10 percent measured according to ASTM D3107. These fabrics exhibit excellent chemical, resistance (for example chlorine or caustic resistance) and durability, that is they retain their shape and feel over repeated exposure to processing conditions, such as stone-washing, dye-stripping, PET-dyeing and the like, and industrial laundry conditions.

Fibers Made from Copolymers of Ethylene/Alpha-Olefins

A fiber is obtainable from or comprises an ethylene/α-olefin interpolymer characterized by an elastic recovery, Re, in percent at 300 percent strain and ( 1 ) cycle and a density, d, in grams/cubic centimeter, wherein the elastic recovery and the density satisfy the following relationship: Re>1481−1629( d ). Such interpolymer can also be characterized by other properties. The fibers made therefrom have a relatively high elastic recovery and a relatively low coefficient of friction. The fibers can be cross-linked, if desired. Woven or non-woven fabrics can be made from such fibers.

Polymer Blends from Interpolymers of Ethylene/Alpha-Olefin with Improved Compatibility

Disclosed herein are polymer blends comprising at least one ethylene/α-olefin interpolymer and two different poly-olefins which can be homopolymers. The ethylene/α-olefin interpolymers are block copolymers comprising at least a hard block and at least a soft block. In some embodiments, the ethylene/α-olefin interpolymer can function as a compatibilizer between the two polyolefins which may not be otherwise compatible. Methods of making the polymer blends and molded articles made from the polymer blends are also described.

Functionalized Ethylene/Alpha-Olefin Interpolymer Compositions

The invention relates to functionalized interpolymers derived from base olefin interpolymers, which are prepared by polymerizing one or more monomers or mixtures of monomers, such as ethylene and one or more comonomers, to form an interpolymer products having unique physical properties. The functionalized olefin interpolymers contain two or more differing regions or segments (blocks), resulting in unique processing and physical properties.

Polymer blends from interpolymers of ethylene/alpha-olefin with improved compatibility

Disclosed herein are polymer blends comprising at least one ethylene/α-olefin interpolymer and two different polyolefins which can be homopolymers. The ethylene/α-olefin interpolymers are block copolymers comprising at least a hard block and at least a soft block. In some embodiments, the ethylene/α-olefin interpolymer can function as a compatibilizer between the two polyolefins which may not be otherwise compatible. Methods of making the polymer blends and molded articles made from the polymer blends are also described.

Catalyst composition comprising shuttling agent for ethylene multi-block copolymer formation

A composition for use in forming a multi-block copolymer, said copolymer containing therein two or more segments or blocks differing in chemical or physical properties, a polymerization process using the same, and the resulting polymers, wherein the composition comprises the admixture or reaction product resulting from combining: (A) a first metal complex olefin polymerization catalyst, (B) a second metal complex olefin polymerization catalyst capable of preparing polymers differing in chemical or physical properties from the polymer prepared by catalyst (A) under equivalent polymerization conditions, and (C) a chain shuttling agent.

Catalyst composition comprising shuttling agent for ethylene multi-block copolymer formation

A composition for use in forming a multi-block copolymer, said copolymer containing therein two or more segments or blocks differing in chemical or physical properties, a polymerization process using the same, and the resulting polymers, wherein the composition comprises the admixture or reaction product resulting from combining: (A) a first metal complex olefin polymerization catalyst, (B) a second metal complex olefin polymerization catalyst capable of preparing polymers differing in chemical or physical properties from the polymer prepared by catalyst (A) under equivalent polymerization conditions, and (C) a chain shuttling agent.

Catalyst composition comprising shuttling agent for ethylene multi-block copolymer formation

A composition for use in forming a multi-block copolymer, said copolymer containing therein two or more segments or blocks differing in chemical or physical properties, a polymerization process using the same, and the resulting polymers, wherein the composition comprises the admixture or reaction product resulting from combining: (A) a first metal complex olefin polymerization catalyst, (B) a second metal complex olefin polymerization catalyst capable of preparing polymers differing in chemical or physical properties from the polymer prepared by catalyst (A) under equivalent polymerization conditions, and (C) a chain shuttling agent.

Functionalized ethylene/alpha-olefin interpolymer compositions

The invention relates to functionalized interpolymers derived from base olefin interpolymers, which are prepared by polymerizing one or more monomers or mixtures of monomers, such as ethylene and one or more comonomers, to form an interpolymer products having unique physical properties. The functionalized olefin interpolymers contain two or more differing regions or segments (blocks), resulting in unique processing and physical properties.

Functionalized ethylene/α-olefin interpolymer compositions

The invention relates to functionalized interpolymers derived from base olefin interpolymers, which are prepared by polymerizing one or more monomers or mixtures of monomers, such as ethylene and one or more comonomers, to form an interpolymer products having unique physical properties. The functionalized olefin interpolymers contain two or more differing regions or segments (blocks), resulting in unique processing and physical properties.

Functionalized ethylene/α-olefin interpolymer compositions

The invention relates to functionalized interpolymers derived from base olefin interpolymers, which are prepared by polymerizing one or more monomers or mixtures of monomers, such as ethylene and one or more comonomers, to form an interpolymer products having unique physical properties. The functionalized olefin interpolymers contain two or more differing regions or segments (blocks), resulting in unique processing and physical properties.

Catalyst composition comprising shuttling agent for ethylene multi-block copolymer formation

A composition for use in forming a multi-block copolymer, said copolymer containing therein two or more segments or blocks differing in chemical or physical properties, a polymerization process using the same, and the resulting polymers, wherein the composition comprises the admixture or reaction product resulting from combining: (A) a first metal complex olefin polymerization catalyst, (B) a second metal complex olefin polymerization catalyst capable of preparing polymers differing in chemical or physical properties from the polymer prepared by catalyst (A) under equivalent polymerization conditions, and (C) a chain shuttling agent.

Functionalized Ethylene/a-Olefin Interpolymer Compositions

The invention relates to functionalized interpolymers derived from base olefin interpolymers, which are prepared by polymerizing one or more monomers or mixtures of monomers, such as ethylene and one or more comonomers, to form an interpolymer products having unique physical properties. The functionalized olefin interpolymers contain two or more differing regions or segments (blocks), resulting in unique processing and physical properties.

Catalyst Composition Comprising Shuttling Agent for Ethylene Multi-Block Copolymer Formation

A composition for use in forming a multi-block copolymer, said copolymer containing therein two or more segments or blocks differing in chemical or physical properties, a polymerization process using the same, and the resulting polymers, wherein the composition comprises the admixture or reaction product resulting from combining: (A) a first metal complex olefin polymerization catalyst, (B) a second metal complex olefin polymerization catalyst capable of preparing polymers differing in chemical or physical properties from the polymer prepared by catalyst (A) under equivalent polymerization conditions, and (C) a chain shuttling agent.

Catalyst Composition Comprising Shuttling Agent for Ethylene Multi-Block Copolymer Formation

A composition for use in forming a multi-block copolymer, said copolymer containing therein two or more segments or blocks differing in chemical or physical properties, a polymerization process using the same, and the resulting polymers, wherein the composition comprises the admixture or reaction product resulting from combining: (A) a first metal complex olefin polymerization catalyst, (B) a second metal complex olefin polymerization catalyst capable of preparing polymers differing in chemical or physical properties from the polymer prepared by catalyst (A) under equivalent polymerization conditions, and (C) a chain shuttling agent.

Functionalized ethylene/α-olefin interpolymer compositions

The invention relates to functionalized interpolymers derived from base olefin interpolymers, which are prepared by polymerizing one or more monomers or mixtures of monomers, such as ethylene and one or more comonomers, to form an interpolymer products having unique physical properties. The functionalized olefin interpolymers contain two or more differing regions or segments (blocks), resulting in unique processing and physical properties.

Catalyst composition comprising shuttling agent for ethylene multi-block copolymer formation

A composition for use in forming a multi-block copolymer, said copolymer containing therein two or more segments or blocks differing in chemical or physical properties, a polymerization process using the same, and the resulting polymers, wherein the composition comprises the admixture or reaction product resulting from combining: (A) a first metal complex olefin polymerization catalyst, (B) a second metal complex olefin polymerization catalyst capable of preparing polymers differing in chemical or physical properties from the polymer prepared by catalyst (A) under equivalent polymerization conditions, and (C) a chain shuttling agent.

Viscosity index improver for lubricant compositions

A lubricant composition comprises a base oil and a viscosity modifier including an ethylene/α-olefin interpolymer. The ethylene/α-olefin interpolymer is a block copolymer having at least a hard block and at least a soft block. The soft block comprises a higher amount of comonomers than the hard block. The block copolymer has a number of unique characteristics disclosed here. Such block copolymers offer the possibility of improved low temperature performance and flexibility in formulating motor oil, gear lubricants and greases, etc.

Cap liners, closures, and gaskets from multi-block polymers

A polymer composition comprises at least an ethylene/α-oleiln interpolymer and at least one other polymer. The other polymer can be selected from a second ethylene/α-olefin interpolymer, an elastomer, a polyolefin, a polar polymer, and an ethylene/carboxylic acid interpolymer or ionomer thereof. The ethylene/α-olefin interpolymer is a block copolymer having at least a hard block and at least a soft block. The soft block comprises a higher amount of comonomers than the hard block. The block interpolymer has a number of unique characteristics disclosed here. Also provided are gaskets, bottle cap liners, and closures that comprise or obtained from a compositon comprising at least one ethylene/α-olefin interpolymer and at least one polyolefin. The gaskets are capable of compression sealing various containers, without contaminating the contents. Liquid containers particularly benefit from the use of the novel gasket materials disclosed herein.

Fibers made from copolymers of ethylene/α-olefins

A fiber is obtainable from or comprises an ethylene/α-olefin interpolymer characterized by an elastic recovery, Re, in percent at 300 percent strain and ( 1 ) cycle and a density, d, in grams/cubic centimeter, wherein the elastic recovery and the density satisfy the following relationship: Re>1481−1629( d ). Such interpolymer can also be characterized by other properties. The fibers made therefrom have a relatively high elastic recovery and a relatively low coefficient of friction. The fibers can be cross-linked, if desired. Woven or non-woven fabrics can be made from such fibers.

Compositions of ethylene/alpha-olefin multi-block interpolymer for elastic films and laminates

This invention relates to polyolefin compositions. In particular, the invention pertains to elastic polymer compositions that can be more easily processed on cast film lines, extrusion lamination or coating lines due to improved resistance to draw resonance. The compositions of the present invention preferably comprise an elastomeric polyolefin resin and a high pressure low density type resin.

Adhesive and marking compositions made from interpolymers of ethylene/α-olefins

An adhesive composition comprises: (i) at least one ethylene/α-olefin interpolymer, (ii) at least one tackifÊer; and (iii) optionally at least one additive, such as a plasticizer, wax and antioxidant. Preferably, the ethylene/α-olefin interpolymer has a M w /M n from about 1.7 to about 3.5, at least one melting point, T m , in degrees Celsius, and a density, d, in grams/cubic centimeter, wherein the numerical values of T m and d correspond to the relationship: T m ≧858.91−1825.3( d )+1112.8( d ) 2 . The composition has relatively higher SAFT temperature and can be used in hot melt adhesives pressure-sensitive adhesives, and thermoplastic marking paints.

Polymer blends from interpolymers of ethylene/α-olefin with improved compatibility

Disclosed herein are polymer blends comprising at least one ethylene/α-olefin interpolymer and two different poly-olefins which can be homopolymers. The ethylene/α-olefin interpolymers are block copolymers comprising at least a hard block and at least a soft block. In some embodiments, the ethylene/α-olefin interpolymer can function as a compatibilizer between the two polyolefins which may not be otherwise compatible. Methods of making the polymer blends and molded articles made from the polymer blends are also described.

Olefin block compositions for stretch fabrics with wrinkle resistance

Compositions having good wrinkle resistance and other properties when made into garments an be made from an ethylene multi-block copolymers. The resulting fabrics and garments often have good chemical resistance, heat-resistances, and are dimensionally stable.

Olefin block compositions for heavy weight stretch fabrics

Heavy weight stretch fabrics comprising ethylene/α-olefin interpolymer are described. The fabric often has a weight of at least 10 ounces per square yard measured according to ASTM 3776 and has a stretch of at least 10 percent measured according to ASTM D3107. These fabrics exhibit excellent chemical, resistance (for example chlorine or caustic resistance) and durability, that is they retain their shape and feel over repeated exposure to processing conditions, such as stone-washing, dye-stripping, PET-dyeing and the like, and industrial laundry conditions.

Separating agent based on ethyl-multi-block copolymers

Novel photoinitiators and their applications

Photoinitiators of formula (Ia) or (Ib) having chain transfer groups, wherein n is 1 or 2; PI is for example a group of formula (IIa); PI' inter alia is a group of formula (IIIa); Ar is for example phenyl; Ar2 is inter alia phenylene; R1 and R2 are for example C1-C8alkyl, or R1 and R2 together C2-C9alkylene; M1 inter alia is -NR3R4 or -OH; M1' is for example a group (c); R3' is a direct bond, C1-C12alkylene, or phenylene; R3 is for example hydrogen, or C1-C12alkyl; R4 is e.g. C1-C12alkyl; A1 and A2 are for example a direct bond; CT is a chain transfer group; are useful for the preparation of macrophotoinitiators which can be employed for preparing block copolymers.

Process for stopping and restarting polymerisation

The present invention relates to a process for stopping and restarting polymerisation in a polymerisation system comprising a gas phase fluidised bed or stirred bed reactor, a degassing vessel and a seedbed storage silo, said process comprising the steps of: a) Conducting a first polymerisation reaction in the reactor using a first polymerisation catalyst system to produce a first polymer, b) Stopping the first polymerisation reaction and removing at least the majority of the first polymer in the reactor to the degassing vessel, and either: c1) Introducing from the seedbed storage silo and into the reactor a seed-bed compatible with a second polymerisation reaction, said seed-bed being of a different material to the first polymer, d1) Passing to the seedbed storage silo at least a portion of the first polymer from the degassing vessel to thereby form a new seedbed in the storage silo, and e1) Conducting the second polymerisation reaction in the reactor to produce a second polymer; or c2) Optionally, maintaining in the seedbed storage silo a seed-bed compatible with a second polymerisation reaction, d2) Passing to the reactor at least a portion of the first polymer from the degassing vessel to thereby form a new seedbed in the reactor, and e2) Conducting a polymerisation reaction in the reactor to produce polymer.

Multistage process for the (co)polymerization of olefins

Multistage process for (co) polymerization of olefins

Multistage process for the polymerization of olefins CH2=CHR, where R is hydrogen or an alkyl, cycloalkyl or aryl radical with 1-10 carbon atoms, comprising two stages of polymerization. In a first stage, in the presence of a titanium or a vanadium catalyst and working in one or more reactors, an olefinic polymer with particular values of porosity is prepared; in a second stage, in the presence of the said porous polymer and a metallocene compound and/or their reaction products, one or more olefins, that are equal to or different from those polymerized in the first stage, are polymerized in one or more reactors.

烯烃(共)聚合的多级方法

烯烃CH 2 ＝CHR聚合的多级方法包含两级聚合，其中R是氢或含1～10个碳原子的烷基、环烷基或芳基。在第一级中，有钛或钒催化剂存在并且在一个或多个反应器中操作，制备出具有特定孔隙率值的烯烃聚合物；在第二级中，在有上述多孔聚合物和金属茂化合物和/或它们的反应产物存在下，一种或多种相同或不同于在第一级中聚合的烯烃在一个或多个反应器内聚合。

Multistage process for polymerization (copolymerization) of olefins

Multistage process for the polymerizarion of olefins CH2=CHR, where R is hydrogen or an alkyl, cycloalkyl or aryl radical with 1-10 carbon atoms, comprising two stages of polymerization. In a first stage, in the presence of a titanium or a vanadium catalysts and working in one or more reactors, an olefinic polymer with particular values of porosity is prepared; in a second stage, in the presence of the said porous polymer and a metallocene compound and/or their reaction products, one or more olefins, that are equal to or different from those polymerized in the first stage, are polymerized in one or more reactors. 22 claims, 2 figures

Polymerization process of at least one olefin

In the present invention there is disclosed a multistage polymerization process of CHi2=CHR olefins, wherein R represents an alkyl, cycloalkyl or aryl radical having 1 to 10 carbon atoms, said process comprising two polymerization stages. In the first polymerization stage (1), a polymer based on olefin having concrete porosity values is prepared in the presence of a titanium or vanadium catalyst and by employing one or more reactors; in the second polymerization stage (II), polymerization of one or more olefins takes place in the presence of said porous polymer and a metallocene compound and/or reaction products thereof and in one or more reactors, whereby said olefins are the same as or differ from the olefins subjected to polymerization in the first stage. The treatment stage (II) serves for affecting the porous polymer produced in the first polymerization stage by contacting thereof with a transient metal M compound containing M-{pi} bonds and optionally with an alkyl aluminium compound.

MULTI-STAGE PROCESS FOR (CO) -POLYMERIZING OLEFINS