ЧАСТИЧНО СШИТЫЕ ЭЛАСТОМЕРНЫЕ ПОЛИОЛЕФИНОВЫЕ СМЕСИ

Изобретение относится к иономерной полимерной смеси, в частности к частично сшитым термопластичным и эластомерным полиолефиновым смесям, имеющим низкую твердость. Смесь включает С2-С10-олефиновые полимеры с прививкой мономеров, содержащих, по меньшей мере, одну карбоксильную группу или ее производную, и ионы металлов I или II группы Периодической системы. С2-С10-олефиновые полимеры представляют собой полиолефиновую смесь, включающую 100 мас.ч. гетерофазной полиолефиновой композиции, содержащей кристаллический полипропилен, и эластомерную фракцию этиленпропиленового сополимера, или этилен-α-олефинового сополимера, с содержанием этилена менее 40 мас. %, и 0-250 мас.ч. эластомерного полимера. Смеси могут дополнительно содержать усиливающие наполнители, пигменты, красители, антиоксиданты, стабилизаторы, вспенивающие агенты и т.д. Полученные смеси характеризуются низкой жесткостью, удовлетворительными свойствами при средних и высоких температурах, улучшенными эластомерными и осязательными показателями ...

ПОЛИМЕРНАЯ КОМПОЗИЦИЯ ДЛЯ ЭЛЕКТРОТЕХНИЧЕСКИХ УСТРОЙСТВ

Изобретение относится к кабелю, в том числе к силовому кабелю, или силовому кабелю постоянного тока, или сшиваемому силовому кабелю, а также к способу изготовления кабеля. Кабель содержит проводник, окруженный по меньшей мере одним слоем, который выполнен из полимерной композиции. Полимерная композиция содержит (а) полиэтилен, полученный в присутствии катализатора полимеризации олефинов, (б) ненасыщенный гомополимер этилена низкой плотности (ПЭНП) или ненасыщенный сополимер этилена низкой плотности и (в) анионообменную добавку в количестве от 0,000001 до менее 1 мас.%. Причем полиэтилен (а) выбран из сополимеров этилена очень низкой плотности (ПЭОНП), линейных сополимеров полиэтилена низкой плотности (ЛПЭНП), сополимеров этилена средней плотности (ПЭСП) или гомополимеров или сополимеров полиэтилена высокой плотности (ПЭВП). Полученный кабель обладает низкой проводимостью. 2 н. и 15 з.п. ф-лы, 1 ил., 2 табл., 5 пр.

SULPHUR-CURABLE COMPOSITIONS COMPRISING AMORPHOUS OLEFINE COPOLYMERS AND DIENE RUBBERS

... 1,212,964. Substituted norbornenes. SUMITOMO CHEMICAL CO. Ltd. 14 Feb., 1969 [20 Feb., 1968], No. 8036/69. Heading C5E. [Also in Division C3] 5 - Oligoisoprenyl- and -oligobutadienyl - 2- norbornene are prepared by reacting 5-chloro-2- norbornene with sodium oligoisoprene and sodium oligobutadiene.

COMPOSITION TO THE PROTECTION AGAINST WASSERBÄUMCHEN

INSATIATED POLYMER COMPOSITION

PROCEDURE FOR THE PRODUCTION OF POLYMER MIXTURES WITH SPREADING A MOLECULAR WEIGHT DISTRIBUTION IN ONLY ONE REACTOR

EASY-TO-TEAR, UNSTRETCHED RESIN FILM AND LAMINATE FILM FOR PACKAGING MATERIAL USING THE SAME

The purpose is to provide a resin film having tearability. A tearable non-stretched resin film comprising a blend of a polyethylene terephthalate resin and a second resin having a difference from the SP value of the polyethylene terephthalate resin of 1.1-4.0 (cal/cm3)0.5. Provided is a laminated film for a packaging material 1B equipped with this tearable non-stretched resin film 10 between an inner layer film 20 that serves as a heat seal surface and a surface layer film 30 comprising an isophthalic acid-modified polyethylene terephthalate resin in which the copolymer ratio of the isophthalic acid component is 0-5 mol%.

MULTILAYER FILM FOR PACKAGING

A multilayer film for packaging which is superior in, such as extensible elesticity, ability for adhering onto various surfaces, transparency, clear cutting perforamnce, heat-sealability, resistance to fogging, resistance to break-through and ability for restoring from finger pressing and which comprises outer layers made of the outer layer resin composition (I) or (II) geven below and an inner layer made of an inner layer resin composition composed of a higher melting component (III) and a softening component (IV) interposed between the outer layers, wherein the resin composition (I) comprises 59.5 - 99.5 % by weight of (A) an ethylene/.alpha. -olefin copolymer component, which is composed of at least one copolymer of ethylene and an .alpha. -olefin having 3 - 20 carbon atoms and which has a melt flow rate (MFR) of 0.1 - 10 g/10 min. and a density of 0.850 g/cm3 - 0.910 g/cm3; 0 - 40 % by weight of (B) a high-pressure process low density polyethylene having a density of 0.915 - 0.930 g ...

TREE RESISTANT CABLE

A cable comprising one or more electrical conductors or a core of one or mor e electrical conductors, each conductor or core being surrounded by an insulating composition comprising a mixture of: (i) about 2 0 to about 50 percent by weight of a homogeneous polyethylene having a polydispersity in the range of about 1.5 to about 3.5 and an essentially uniform comonomer distribution; and (ii) about 50 to about 80 percent by weight of a homopolymer of ethylene made by a high pressure process.

СШИВАЕМАЯ ПОЛИМЕРНАЯ КОМПОЗИЦИЯ

Изобретение относится к полимерной композиции, включающей по меньшей мере один ненасыщенный полимер (А) и, при необходимости, сшивающий агент (В).

СПОСОБ ПОЛУЧЕНИЯ СШИТЫХ ПОЛИМЕРОВ

Настоящее изобретение относится к способу изготовления сшитой полимерной композиции, включающему стадии: (а) приготовления сшиваемой смеси сшивающего агента и ненасыщенного полиолефина, суммарное количество двойных связей углерод-углерод на 1000 атомов углерода в котором составляет более чем 0,37, где стадию смешивания проводят до и/или во время экструзии ненасыщенного полиолефина, а сшивающий агент находится в жидком состоянии, когда его приводят в контакт с ненасыщенным полиолефином, (б) экструзии смеси в экструдере, (в) нанесения экструдированной смеси на субстрат и (г) обработки экструдированной смеси в условиях сшивания.

POLYMERIC COMPOSITION, WHICH POSSESSES THE IMPROVED PROPERTIES DURING THE AGING UNDER THE ACTION OF THE MOISTURE

POLYMERIC COMPOSITION, WHICH POSSESSES THE IMPROVED PROPERTIES DURING THE AGING UNDER THE ACTION OF THE MOISTURE

СПОСОБ ПОЛУЧЕНИЯ СШИТЫХ ПОЛИМЕРОВ

Настоящее изобретение относится к способу изготовления сшитой полимерной композиции, включающему следующие стадии: (а) приготовление сшиваемой смеси сшивающего агента и ненасыщенного полиолефина, суммарное количество двойных связей углерод-углерод на 1000 атомов углерода в котором составляет более чем 0,37, где стадию смешивания проводят до и/или во время экструзии ненасыщенного полиолефина, а сшивающий агент находится в жидком состоянии, когда его приводят в контакт с ненасыщенным полиолефином; (б) экструзия смеси в экструдере; (в) нанесение экструдированной смеси на субстрат и (г) обработка экструдированной смеси в условиях сшивания.

ПОЛИМЕРНЫЕ КОМПОЗИЦИИ, ЗАМЕДЛЯЮЩИЕ ОБРАЗОВАНИЕ ДРЕВОВИДНОГО ТОКОПРОВОДЯЩЕГО СЛЕДА ПОД ДЕЙСТВИЕМ ВОДЫ, ИЗДЕЛИЯ И СПОСОБЫ ИХ ИЗГОТОВЛЕНИЯ

Настоящее изобретение относится к поперечно сшиваемой полимерной композиции, содержащей (1) ненасыщенный полиолефин, имеющий общее количество углерод-углеродных двойных связей/1000 атомов углерода более чем 0,37, и (2) по меньшей мере одну добавку, содержащую простую эфирную и/или сложноэфирную группу, выбранную из группы, состоящей из полиэтиленгликоля, сложноэфирного соединения глицерина, полипропиленгликоля, эфира жирной кислоты, содержащего амидогруппы, этоксилированного и/или пропоксилированного пентаэритритола, эфира альфа-токоферола, этоксилированной и/или пропоксилированной жирной кислоты и ее производных. Также изобретение относится к способу изготовления сшитой полимерной композиции из указанной сшиваемой композиции, изделию, содержащему указанную сшиваемую композицию, изделию, содержащему указанную сшитую композицию, и способу изготовления этих изделий.

НЕНАСЫЩЕННЫЙ ПОЛИЭТИЛЕН НИЗКОЙ ПЛОТНОСТИ, СОДЕРЖАЩАЯ ЕГО ПОЛИМЕРНАЯ КОМПОЗИЦИЯ, КАБЕЛЬ, ПРОВОД И СПОСОБ ИЗГОТОВЛЕНИЯ КАБЕЛЯ

В изобретении предложен ненасыщенный полиэтилен низкой плотности, выбранный из гомополимера или сополимера этилена и одного или более полиненасыщенных сомономеров и, при необходимости, одного или более других сомономеров, который имеет а) показатель текучести расплава, ПТР2, по меньшей мере 2,8 г/10 мин и b) углерод-углеродные двойные связи в количестве по меньшей мере 0,40 углерод-углеродных двойных связей/1000 атомов углерода. Предложена полимерная композиция, включающая указанный ненасыщенный полиэтилен низкой плотности и сшивающий агент; изделие, представляющее собой кабель или провод, включающие указанные ненасыщенный полиэтилен низкой плотности или полимерную композицию, а также способ изготовления указанного кабеля. Указанные ненасыщенный полиэтилен низкой плотности и полимерную композицию можно применять для изготовления кабеля или провода, при необходимости подвергаемых сшиванию, с хорошей обрабатываемостью и без эффекта стекания.

КОМПОЗИЦИЯ, ЗАМЕДЛЯЮЩАЯ ОБРАЗОВАНИЕ ДРЕВОВИДНОГО ТОКОПРОВОДЯЩЕГО СЛЕДА ПОД ДЕЙСТВИЕМ ВОДЫ

Настоящее изобретение относится к поперечно сшиваемой полимерной композиции, содержащей (1) ненасыщенный полиолефин, имеющий общее количество углерод-углеродных двойных связей/1000 атомов углерода более чем 0,37, и (2) по меньшей мере одну добавку, содержащую эфирную и/или сложноэфирную группу, выбранную из группы, состоящей из полиэтиленгликоля, сложноэфирного соединения глицерина, полипропиленгликоля, эфира жирной кислоты, содержащего амидогруппы, этоксилированного и/или пропоксилированного пентаэритритола, эфира альфа-токоферола, этоксилированной и/или пропоксилированной жирной кислоты и ее производных.

CABLE WITH IMPROVED ELECTRICAL PROPERTIES

Highly viscous, largely amorphous polyolefin

CATALYTIC SYSTEM USABLE FOR the COPOLYMERIZATION OF ETHYLENE AND UNDIENE COMBINES, PROCEEDED OF PREPARATION OF THIS CATALYTIC SYSTEM AND Of UNCOPOLYMERE Of ETHYLENE AND a DIENE COMBINES

A METHOD FOR PREPARING a CABLE AND USE OF ORGANIC PEROXIDES TO REDUCE the STAGE OF DEGASIFICATION IN a PROCESS TO PREPARE a CABLE

La présente invention concerne un procédé pour préparer un câble ou fil électrique en utilisant un agent générateur de radical, ainsi qu'un câble ou fil électrique réticulé et l'utilisation de peroxydes organiques pour réduire l'étape de dégazage dans un procédé pour préparer un câble ou un fil électrique.

중합체 조성물 및 전기 장치

... 본 발명은, 중합체(a) 및 나노입자 충전제(b)를 포함하는 중합체 조성물, 전기 장치, 예컨대 전력 케이블, 및 전기 장치의 제조 방법에 관한 것으로서, 이때 상기 중합체 조성물은, Dvol 부피%인 나노입자 충전제(b)의 부피 퍼센트를 포함하고, 이는 하나의 나노입자로부터 그의 최근접 나노입자 인접체(neighbour)까지, 자유 반경을 가지며 2 차원(2D)인 중심-대-중심 평균 거리(nm)를 가지며, 이는 R1st nm이고, 상기 중합체 조성물은 최근접 인접체까지의 상기 중심-대-중심 평균 거리 R1st와 상기 부피 퍼센트 Dvol 부피% 사이의 의존성을 나타내고, 이는 R1st = E/(Dvol + 0.3) + F이고, 이때, Dvol1 ≤ Dvol ≤ Dvol2, E1 ≤ E ≤ E2, F1 ≤ F ≤ F2이고, Dvol1은 0.010이고, Dvol2는 4.4이고, E1은 100이고, E2는 280이고, F1은 50이고, F2는 140이다.

Amphiphilic copolymer and method for fabricating the same and polymer composition employing the same

Amphiphilic copolymer and method for fabricating the same are provided. Further, a polymer composition employing the amphiphilic copolymer is also provided. The amphiphilic copolymer comprises a polar block connected to a nonpolar block via a moiety derived from maleic anhydride, wherein the polar block is derived from polylactide, and the nonpolar block is derived from thermoplastic polyolefin elastomer.

RESINOUS INTERIOR MEMBER OF OPENING/CLOSING BODY, MOLD THEREFOR AND METHOD OF MOLDING THE SAME

A resinous interior member of opening/closing body, arranged inside an outer panel of opening/closing body, characterized in that a polypropylene resin loaded with a reinforcing fiber and a rubber as a molding material is molded into the resinous interior member by injection molding technique. The incorporation of reinforcing fiber enables attaining an increase of flexural modulus and an enhancement of rigidity of the member while the incorporation of rubber component enables ensuring an impact resistance without notable detriment to the moldability of material resin and the appearance of molded item by appropriately setting the respective contents of reinforcing fiber and rubber component. Thus, not only moldability but also the appearance of molded item is excellent, and an interior member of desired rigidity and impact resistance can be obtained.

POLYMER COMPOSITION AND ELECTRICAL DEVICES

The invention relates to a polymer composition comprising a polymer (a) and a nanoparticle filler (b), wherein the polymer composition comprises a volume percentage (vol. %) of the nanoparticle filler (b), which is Dvol vol. %, and has a center-to-center average distance, in nanometer (nm), in two dimensions (2D) and with a free radius, from one nanoparticle to its nearest nanoparticle neighbour, which is R1st nm, and wherein the polymer composition shows a dependency between said center-to-center average distance to nearest neighbour, R1st, and said volume percentage, Dvol vol. %, which is R1st=E/(Dvol+0.3)+F, wherein Dvol1≤Dvol≤Dvol2, E1≤E≤E2, F1≤F≤F2, and Dvol1 is 0.010 and Dvol2 is 4.4, E1 is 100 and E2 is 280, and F1 is 50 and F2 is 140; an electrical device, e.g. a power cable; and a process for producing an electrical device.

Thermoplastic elastomer composition, use thereof, method for producing same, ethylene/α-olefin/unconjugated polyene copolymer and use thereof

... [Problem] The purpose of the invention is to provide: a thermoplastic elastomer composition capable of providing molded articles that are lightweight, have better oil resistance than those provided by conventional cross-linked thermoplastic elastomers, and have hardness and mechanical properties such as tensile strength and tensile elongation that are equal to or superior to those provided by conventional cross-linked thermoplastic elastomers; and an ethylene/α-olefin/unconjugated polyene copolymer having little compression set at low temperature as well as flexibility and an excellent balance of rubber elasticity at low temperature and tensile strength at normal temperature.[Solution] Produced are: a thermoplastic elastomer composition obtained by dynamically crosslinking a mixture containing a crystalline olefin polymer (A), an ethylene/α-olefin (having 4-20 carbon atoms)/unconjugated polyene copolymer (1B) that satisfies specific requirements, and a phenol resin-based crosslinking agent ...

КАБЕЛЬ И КОМПОЗИЦИЯ

Кабель, содержащий один или более проводников, окруженных по меньшей мере внутренним полупроводящим слоем, изоляционным слоем и внешним полупроводящим слоем в указанном порядке, где изоляционный слой является несшитым и содержит по меньшей мере 90 масс. % полимерной композиции, причем указанная полимерная композиция содержит (I) от 85,0 до 99,5 масс. % ПЭНП и (II) от 0,5 до 15,0 масс. % ПЭВП, имеющего плотность по меньшей мере 940 кг/м3, или от 1,5 до 15,0 масс. % сверхвысокомолекулярного полиэтилена, имеющего Mw по меньшей мере 1000000. Смеси согласно настоящему изобретению не подвержены ползучести, и следовательно эти смеси можно применять в слоях кабелей без необходимости проведения реакции сшивания для придания слою термореактивности. 4 н. и 14 з.п. ф-лы, 4 ил.

СПОСОБ ПОЛУЧЕНИЯ МЕЗОПОРИСТЫХ МЕХАНОЧУВСТВИТЕЛЬНЫХ ПОЛИМЕРНЫХ МАТЕРИАЛОВ

Изобретение относится к способу получения механочувствительных мезопористых пленочных материалов со свойствами жесткоэластичных полимеров, предназначенных для широкого использования в различных областях науки и техники. Способ включает первичную одноосную вытяжку полукристаллического (ПК) полимерного изделия со степенью кристалличности от 20 до 80% вытянутой формы в присутствии органического растворителя до степени вытяжки от 25 до 250% от исходной длины изделия. Далее изделие выдерживают в свободном состоянии при комнатной температуре на воздухе при полном удалении физически активной жидкой среды (ФАЖС) из его объема. Вторичную одноосную вытяжку осуществляют при комнатной температуре на воздухе. Полученный полимерный материал приобретает свойства, характерные для жесткоэластичных полимерных материалов. При приложении механической нагрузки в циклическом режиме с последующими стадиями разгрузки образцы воспроизводят свое поведение, демонстрируя формирование пористости при нагрузке и восстановление ...

VERFAHREN ZUR HERSTELLUNG VON POLYMERMISCHUNGEN MIT EINER BREITEN MOLEKULARGEWICHTSVERTEILUNG IN EINEM EINZIGEN REAKTOR

GEGEN DENDRITENBILDUNG WIDERSTANDSFÄHIGES KABEL

Insulation composition

A precursor material for a polyolefin insulation composition comprising a crosslinkable graft polymer comprising a polyolefin component, such as polyethylene or polypropylene, and a polyene component, such as 1,7-octadiene, 1,9-decadiene, 1,11-dodecadiene, 1,13-tetradecadiene, 7-methyl-1,6-octadiene, 9-methyl-1,8-decadiene, farnesene, squalene, limonene, dicyclopentadiene, 1,2,4-trivinylcyclohexane, vinyl norbornene, cyclooctadiene or cyclooctatriene, and an antioxidant, such as phenolic antioxidants, phosphite antioxidants, sulphur-containing antioxidants or aminic antioxidants and further comprising a crosslinking agent, comprising a peroxide and a scorch retarder, such as 2,4-diphenyl-4-methyl-1-pentene. Also disclosed is use of the precursor material to form a polyolefin insulation composition to insulate a wire or cable.

Improvements in or relating to Playballs

... 1,177,224. Golf bails. DUNLOP CO. Ltd. 21 July, 1967 [22 July, 1966; 7 March, 1957], Nos. 32952/66 and 10734/67. Heading A6D. [Also in Division C3] One-piece playballs or cores therefor, particularly golf balls, comprise a blend of a rubber and a thermoplastic crystalline homopolymer or copolymer of an alpha-olefin, the rubber being present in the blend in an amount of 5 to 95 weight per cent. The rubber may be natural rubber, polybutadiene, particularly cis-polybutadiene, butadiene/styrene or butadiene/acrylonitrile copolymer, polybutene, ethylene/-olefin copolymer, polyisoprene or polychloroprene. The olefin polymer may be derived from ethylene, propylene, butene-1, 4- methylpentene-1 and/or hexane, optionally with not more than 10 weight per cent of a multiply unsaturated monomer such as butadiene. The compositions may also comprise fillers, and may be cured with dicumyl peroxide or sulphur, or by irradiation. Examples describe onepiece golf balls moulded from compositions comprising ...

Vulcanizable Blends

... 1,172,728. Compositions containing ethyleneconjugated diene copolymers. PHILLIPS PETROLEUM CO. 28 March, 1967 [29 March, 1966], No. 13986/67. Heading C3P. A sulphur-vulcanizable blend comprises 50- 99% by weight of copolymer of ethylene, a conjugated diolefin having a terminal double bond, and, optionally, one or more other 1 -olefins, and 50-1% by weight of a rubbery EPDM terpolymer or a rubbery copolymer of isobutylene and isoprene. A preferred composition consists of an ethylene-butadiene copolymer, an ethylene-propylene-1,4-hexadiene terpolymer, carbon black, and curatives.

CATALYST SYSTEM, PROCEDURE FOR HIS PRODUCTION AND PROCEDURE FOR THE PRODUCTION OF A COPOLYMER OF ETHYL-CONJUGATED SERVE

AGAINST DENDRITE FORMATION RESISTANT CABLE

Partially cross-linked elastomeric polyolefin mixtures

ETHYLENE-PROPYLENE-DIENE INTERPOLYMER COMPOSITION

The present disclosure is directed to a composition and articles containing the composition. The composition includes an ethylene-propylene-diene interpolymer (EPDM) having a rheology ratio greater than 33. The EPDM also has a molecular weight distribution greater than 3Ø The composition has a dissipation factor less than or equal to 0.01 radians as measured in accordance with ASTM D 150 (130°C, 60 Hz).

PARTIALLY CROSS-LINKED ELASTOMERIC POLYOLEFIN MIXTURES

Mixtures of C2-C10 olefin polymers functionalized with carboxylic acids which are neutralized from 1 to 100 % with metallic ions. The mixtures comprise (by weight): (I) 100 parts of a heterophasic polyolefin composition comprising crystalline polypropylene and an elastomeric fraction of an ethylene/propylene or superior ethylene/.alpha.-olefin copolymer where the ethylene content is less than 40 %; and (II) 0-250 parts of an elastomeric polymer selected from: a) ethylene/C3-C10 .alpha.-olefin copolymers containing at least 20 % of a C3C10 .alpha.-olefin; b) ethylene/methyl acrylate copolymers containing from 15 to 30 % of recurrent units of methyl acrylate, and having a MFR ranging from 1 to 10 g/10 min; and c) polyisobutylenes; d) atactic propylene homopolymers and amorphous ethylene/C3-C10 .alpha.-olefins copolymers produced with metallocenic catalysts; and e) styrene block copolymers containing butadiene and isoprene as comonomer.

ПОЛИМЕРНЫЕ КОМПОЗИЦИИ, ОБЛАДАЮЩИЕ УЛУЧШЕННЫМИ СВОЙСТВАМИ ПРИ СТАРЕНИИ ПОД ДЕЙСТВИЕМ ВЛАГИ, ИЗДЕЛИЯ И СПОСОБЫ ИХ ПОЛУЧЕНИЯ

Изобретение относится к сшиваемой полимерной композиции, содержащей (1) полиолефин, представляющий собой ненасыщенный олефиновый сополимер, характеризующийся количеством звеньев из полярного сомономера менее чем 150 мкмоль на грамм полиолефина, где мономер выбран из этилена, С3-С20альфа-олефинов и их смесей, полярный сомономер является соединением, которое может содержать гидроксильные группы, алкоксигруппы, карбонильные группы, карбоксильные группы и сложноэфирные группировки или их комбинации, причем полиолефин содержит общее количество углерод-углеродных двойных связей/1000 атомов углерода по меньшей мере 0,37 на основании ASTMD 3124-72, где базовую кривую строят от 980 до примерно 840 см-1, и высоты пиков определяют при примерно 888 см-1 для винилидена, при примерно 910 см-1 для винила и при примерно 965 см-1 для транс-винилена, (2) полярный сополимер, характеризующийся количеством звеньев из полярного сомономера более чем 500 мкмоль на сополимера и полученный сополимеризацией олефинового ...

СШИВАЕМАЯ ПОЛИМЕРНАЯ КОМПОЗИЦИЯ, СШИТАЯ ПОЛИМЕРНАЯ КОМПОЗИЦИЯ, СПОСОБ ПОЛУЧЕНИЯ КОМПОЗИЦИИ, ИЗДЕЛИЕ, СОДЕРЖАЩЕЕ КОМПОЗИЦИЮ (ВАРИАНТЫ), СПОСОБ ПОЛУЧЕНИЯ ИЗДЕЛИЯ

Настоящее изобретение относится к сшиваемой полимерной композиции, содержащей: (i) ненасыщенный полиолефин, имеющий общее количество углерод-углеродных двойных связей на 1000 атомов углерода более 0,37, определенное на основании ASTM D3124-72, где базовую кривую строят от 980 до примерно 840 см-1, а высоты пиков определяют примерно при 888 см-1 для винилидена, примерно при 910 см-1 для винила и примерно при 965 см-1 для транс-винилена, и включающий звенья, образованные из полярного сомономера, в количестве менее 150 мкмоль на грамм ненасыщенного полиолефина; (ii) полярный сополимер, включающий звенья, образованные из полярного сомономера, в количестве более 500 мкмоль на грамм полярного сополимера, и звенья олефинового мономера. Также согласно изобретению предложены сшитая полимерная композиция, полученная путем обработки сшиваемой композиции, способ получения сшиваемой композиции, многослойные изделия, включающие вышеуказанные композиции, и способ получения сшитого многослойного изделия ...

Homogeneous polymer blend and process of making the same

Vulcanizable mixtures of copolymers ethylene-butadiene and new vulcanized products thus obtained

A RUBBER COMPOSITION COMPRISING A DIENE ELASTOMER HEAVILY SATURATED

composição de polímero reticulável, artigo compreendendo uma composição de polímero, processo para produzir um cabo e cabo reticulável

HIGHLY VISCOUS, LARGELY AMORPHOUS POLYOLEFIN

The invention relates to a polyolefin containing the following monomer units: a) a maximum of 25 wt. % of units derived from ethene, b) a maximum of 75 wt. % of units derived from propene, and c) between 5 and 100 wt. % of units derived from an α-olefin containing between 4 and 20 C atoms. The inventive polyolefin has the following parameters: d) a weight-average molecular weight of between 70,000 and 10,000,000 g/mol, e) a polydispersity of between 4 and 60, f) a melting viscosity, measured by oscillation rheometry with a shearing speed of 1 Hz at 190 °C, of between 100,000 and 100,000,000 mPa s, g) a needle penetration of between 3 and 70 0.1 mm, h) a melting enthalpy of between 2 and 100 J/g, i) a glass transition temperature Tg of between -15 °C and -80 °C, and j) an end of the crystalline part melting range at between 85 and 175 °C. The inventive polyolefin is compatible both with ethylene polymers and propylene polymers, and is suitable for using in films, sealing strips, and moulded ...

ETHYLENE-BASED COPOLYMER, COMPOSITION CONTAINING THE COPOLYMER, AND MOLDED ARTICLE AND FILM OR SHEET FORMED OF THE COPOLYMER OR THE COMPOSITION

The present invention relates to a method for producing an ethylene-based copolymer which maintains a high level of rubber elasticity even in non-cross linking and a high level of molding workability even in a substantial high-fill mixture, and a method for producing a film or a sheet of flexibility and high extensibility with high productivity. An ethylene-based copolymer (X) of the present invention comprises a structural unit which is derived from the ethylene-based copolymer (X) which comprises a structural unit which is derived from a component [A], a component [B], and a component [C], each being an ethylene [A], an alpha olefin having a number of carbon atoms of from 3 to 20 [B], and a polyene and/or a cyclic olefin [C]. According to the ethylene-based copolymer and a composition and an application containing the ethylene-based copolymer (X), (1) the structural unit derived from the ethylene [A] is within a range of between 50 mole percent and 90 mole percent in an entire structural ...

MODIFIED POLYETHYLENE COMPOSITIONS

The present invention relates to a branched modifier and a composition comprising more than 25 wt% (based on the weight of the composition) of one or more linear ethylene polymers having a g'vis of 0.97 or more and an Mw of 20,000 g/mol or more and at least 0.1 wt% of a branched modifier where the modifier has a g'vis of less than 0.97, wherein the ethylene polymer has a g'vis of at least 0.01 units higher than the g'vis of the branched modifier.

ETHYLENE-PROPYLENE-DIENE INTERPOLYMER COMPOSITION

The present disclosure is directed to a composition and articles containing the composition. The composition includes an ethylene-propylene-diene interpolymer (EPDM) having a rheology ratio greater than 33. The EPDM also has a molecular weight distribution greater than 3.0. The composition has a dissipation factor less than or equal to 0.01 radians as measured in accordance with ASTM D 150 (130°C, 60 Hz).

THERMOPLASTIC ELASTOMER COMPOSITION

A thermoplastic elastomer composition comprising 5-95 weight % of an oil free elastomer, 95-5 weight % of a polyolefin composition comprising from 20 to 50 parts by weight of a crystalline polyolefinic polymer and 50 to 80 parts by weight of an elastomeric olefinic copolymer whereby the total parts by weight is 100. The thermoplastic elastomer composition may comprise 0,02-10 weight % of a cross linking agent optionally with co-agent whereby the total weight of (a), (b) and the cross linking agent is chosen from a peroxide, hydrosilane or phenolic resins. The present invention further relates to articles comprising the thermoplastic elastomer composition and to the use of the thermoplastic elastomer composition in food packaging, industrial application, consumer applications, medical applications, seals, auto interior parts and low fogging applications as for example airbags and dashboards.

АНТИВИБРАЦИОННАЯ РЕЗИНОВАЯ КОМПОЗИЦИЯ, СШИТАЯ АНТИВИБРАЦИОННАЯ РЕЗИНОВАЯ КОМПОЗИЦИЯ И АНТИВИБРАЦИОННАЯ РЕЗИНА

Изобретение относится к виброизоляционной резиновой композиции и сшитой виброизоляционной резиновой композиции. Виброизоляционная резиновая композиция включает: каучуковый компонент, имеющий сополимер сопряженное диеновое соединение/несопряженный олефин, и полимер на основе несопряженного диена; в качестве вулканизирующего агента - бисмалеимидное соединение. Бисмалеимидное соединение и Ν-фенил-Ν(трихлорметилтио)бензолсульфонамид дают синергетический эффект улучшения полученной резиновой композиции в плане низкого отношения динамического модуля к статическому модулю, устойчивости к разрушению, термостойкости. Изобретение позволяет получать виброизоляционные резиновые композиции и сшитые виброизоляционные резиновые композиции, которые обладают превосходными низким отношением динамического модуля к статистическому модулю, усталостной прочностью при растяжении, низкотемпературными характеристиками и технологичностью. 3 н. и 11 з.п. ф-лы, 3 табл., 23 пр.

ВЫСОКОВЯЗКИЙ, В ЗНАЧИТЕЛЬНОЙ СТЕПЕНИ АМОРФНЫЙ ПОЛИОЛЕФИН

... 1. Полиолефин, который содержит следующие мономерные единицы: ! a) максимально 25 мас.% единиц, которые выводятся из этилена, ! b) максимально 75 мас.% единиц, которые выводятся из пропилена, а также ! c) от 5 до 100 мас.% единиц, которые выводятся из α-олефина, имеющего от 4 до 20 атомов углерода, ! причем полиолефин обладает следующими параметрами: ! d) средневесовая молекулярная масса в интервале от 70000 до 10000000 г/моль, ! e) полидисперсность в интервале от 4 до 60, ! f) вязкость расплава, измеренная путем реометрии колебаний со ! скоростью сдвига 1 Гц при температуре 190°С, в интервале от 100000 до 100000000 мПа·с, ! g) проникание иглой в интервале от 3 до 70·0,1 мм, ! h) энтальпия плавления в интервале от 2 до 100 Дж/г, ! i) температура стеклования Тg в интервале от -15 до -80°С, а также ! j) конец области плавления кристаллической части в интервале от 85 до 175°С. ! 2. Полиолефин по п.1, отличающийся тем, что средневесовая молекулярная масса составляет по меньшей мере 100000 г ...

VERY VISCOUS, LARGE AMORPHOUS POLYOLEFIN

MODIFIED POLYMER COMPOSITIONS, MODIFICATION PROCEDURES AND MEANS FOR PRODUCTION SUITOR OF RADICALS

PROCEDURE FOR THE PRODUCTION OF INTERCONNECTIONS OF POLYMERS

WATER TREE RETARDING COMPOSITION

The present invention relates to a crosslinkable polymer composition, comprising (i) an unsaturated polyolefin having a total amount of carbon- carbon double bonds/1000 carbon atoms of more than 0.37, and (ii) at least one ether and/or ester group containing additive selected from the group consisting of polyethylene glycol, a glycerol ester compound, polypropylene glycol, an amido group containing fatty acid ester, ethoxylated and/or propoxylated pentaerythritol, an alpha-tocopherol ester, an ethoxylated and/or propoxylated fatty acid, and derivatives thereof.

CATALYTIC SYSTEM, THE PROCEDURE FOR DEVELOPING IT AND THE PROCEDURE FOR DEVELOPING AN ETHYLENE COPOLYMER AND A CONJUGATE DIENE

La présente invention concerne un système catalytique, son procédé de préparation et un procédé de préparation d'un copolymère d'éthylène et d'un diène conjugué utilisant ce système catalytique. Un système catalytique selon l'invention comprend: - d'une part, un complexe organométallique représenté par l'une des formules génériques suivantes A ou B: où Ln représente un métal d'un lanthanide dont le numéro atomique peut aller de 57 à 71, où X représente un halogène pouvant être le chlore, le fluor, le brome ou l'iode, où Cp1 et Cp2 comprennent chacun un groupe cyclopentadiényle ou fluorényle qui est substitué ou non et où P est un pont répondant à la formule MR2, où M est un élément de la colonne IVA de la classification périodique de Mendeleev, et où R est un groupe alkyle comprenant de 1 à 20 atomes de carbone, et - d'autre part, un co-catalyseur qui est choisi parmi un groupe comprenant un alkyl magnésium, un alkyl lithium, un alkyl aluminium, ou un réactif de Grignard, ou qui ...

ETHYLENE/.ALPHA.-OLEFIN/NONCONJUGATED POLYENE TERPOLYMER RUBBER COMPOSITION AND VULCANIZED RUBBER OBTAINED THEREFROM

An ethylene/-olefin/nonconjugated polyene terpolymer rubber composition according to the present invention comprises a random terpolymer rubber (A) prepared from ethylene, an .alpha.-olefin having 3 to 20 carbon atoms and at least one branched chain polyene compound represented by a specified formula and a diene rubber (B). The molar ratio of ethylene to an .alpha.-olefin having 3 to 20 carbon atoms, iodine value and intrinsic viscosity ¢?! measured in 135.degree.C decalin of the random terpolymer rubber (A) are within respective specified ranges. This rubber composition enables providing a vulcanized rubber which is excellent in resistances to weather, ozone and heat aging without detriment to the excellent mechanical strength characteristics, abrasion resistance and dynamic fatigue resistance of the diene rubber. When a nitrile rubber (C) is employed as a diene rubber (B), this rubber composition enables providing a vulcanized rubber which is excellent in not only strength characteristics ...

Polymer composition having improved wet ageing properties

The present invention relates to a crosslinkable polymer composition, comprising (i) an unsaturated polyolefin having a total amount of carbon-carbon double bonds/1000 carbon atoms of more than 0.37, and (ii) a polar copolymer.

Tire tread

METHOD FOR THE PRODUCTION OF

La présente invention concerne un pneumatique pour avion dont la bande de roulement comprend une composition de caoutchouc à base d'au moins un premier élastomère diénique, une charge renforçante et un système de réticulation, lequel premier élastomère diénique comprend des unités éthylène et des unités diéniques comportant une double liaison carbone-carbone, lesquelles unités sont distribuées statistiquement au sein du premier élastomère diénique, les unités éthylène représentant au moins 50% en mole de l'ensemble des unités monomères du premier élastomère diénique. Un tel pneumatique présente une performance à l'atterrissage fortement améliorée, notamment vis-à-vis de la résistance à l'usure à très haute vitesse.

SULPHUR-CURABLE COMPOSITIONS COMPRISING AMORPHOUS OLEFINE COPOLYMERS AND DIENE RUBBERS

CATALYTIC SYSTEM USABLE FOR the COPOLYMERIZATION OF ETHYLENE AND a DIENE COMBINES, PROCEEDED OF PREPARATION OF THIS CATALYTIC SYSTEM AND Of an ETHYLENE COPOLYMER AND a DIENE COMBINES

PROCESS FOR PREPARING CROSSLINKED POLYMERS

The present invention relates to a process for preparing a crosslinked polymer composition, comprising the steps: (a) preparing a crosslinkable blend of a crosslinking agent and an unsaturated polyolefin having a total amount of carbon-carbon double bonds/1000 carbon atoms of more than 0.37, wherein the blending step is carried out prior to and/or during extrusion of the unsaturated polyolefin, and the crosslinking agent is in a liquid state when it comes into contact with the unsaturated polyolefin, (b) extruding the blend in an extruder, (c) applying the extruded blend onto a substrate, and (d) treating the extruded blend under crosslinking conditions. © KIPO & WIPO 2008 ...

POLYMER COMPOSITION HAVING IMPROVED WET AGEING PROPERTIES

The present invention relates to a crosslinkable polymer composition, comprising (i) an unsaturated polyolefin having a total amount of carbon-carbon double bonds/1000 carbon atoms of more than 0.37, and (ii) a polar copolymer. © KIPO & WIPO 2008 ...

CROSSLINKED COMPOSITIONS AND ARTICLES PREPARED THEREFROM

The invention provides a crosslinked composition formed by thermally treating a composition comprising at least the following: A) an ethylene-based polymer that has a density less than, or equal to, 0.910 g/cc; B) an olefin-based polymer that has a melt viscosity less than, or equal to, 20,000 cP, at 350°F; and C) a crosslinking agent.

Unsaturated elastomer compositions and their vulcanized rubbers

Disclosed is an unsaturated elastomer composition comprising (A) an unsaturated olefin copolymer of at least one alpha-olefin of 2 to 20 carbon atoms, a conjugated diene monomer represented by the following formula (I), and optionally, an aromatic vinyl compound, and (B) at least one rubber selected from a diene rubber and an ethylene/alpha-olefin/nonconjugated polyene copolymer rubber, a weight ratio of said component (A) to said component (B) ((A)/(B)) being in the range of 1/99 to 99/1;wherein R1 and R2 are each independently a hydrogen atom, an alkyl group of 1 to 8 carbon atoms or an aryl group, and at least one of R1 and R2 is a hydrogen atom. From the composition, a vulcanized product excellent in vibration damping properties, vibration insulation properties and strength properties as well as in heat resistance, weathering resistant, ozone resistance and dynamic fatigue resistance can be obtained.

POLYOLEFIN COMPOSITIONS HAVING LOW HARDNESS AND LOW GLOSS

Polymer composition having improved wet ageing properties

MODIFIED POLYETHYLENE COMPOSITIONS

RUBBER COMPOSITION

PROCESS FOR PREPARING A CABLE AND USE OF ORGANIC PEROXIDES FOR REDUCING THE DEGASSING STEP IN A PROCESS FOR PREPARING A CABLE

ПОЛИМЕРНАЯ КОМПОЗИЦИЯ ДЛЯ ЭЛЕКТРОТЕХНИЧЕСКИХ УСТРОЙСТВ

... 1. Полимерная композиция, содержащая:(а) полиолефин, который отличен от полиэтилена низкой плотности (ПЭНП),(б) второй полиолефин, который отличен от полиолефина (а), и(в) ионообменную добавку.2. Полимерная композиция по п.1, в которой полиолефин (а) является полиэтиленом, полученным в присутствии катализатора полимеризации олефинов и выбранным из гомополимера этилена или сополимера этилена и одного или более сомономеров, или гомо- или сополимером С3-20 альфа-олефина, полученным в присутствии катализатора полимеризации олефинов, который предпочтительно выбран из гомополимера пропилена, статистического сополимера пропилена и одного или более сомономеров или гетерофазного сополимера пропилена и одного или более сомономеров, или из гомо- или сополимеров бутена, еще более предпочтительно полиолефин (а) является полиэтиленом, полученным в присутствии катализатора полимеризации олефинов и выбранным из гомополимера этилена или сополимера этилена и одного или более сомономеров.3. Полимерная композиция ...

POLYMER COMPOSITION WITH IMPROVED ONE ßWETAGEINGß EIGENSCHAFTEN

ELECTRICAL CONSTRUCTION UNITS WITH PLASTIC-ISOLATED OR SEMICONDUCTOR ELEMENTS

PARTIALINTERLACED ELASTOMERS POLYOLEFIN MERGING

EXTRUSION COATING OF A POLYETHYLENE COMPOSITION

OLEFIN COPOLYMERS CONTAINING HYDROLYTICALLY CLEAVABLE LINKAGES AND USE THEREOF IN DEGRADABLE PRODUCTS

POLYMER COMPOSITION HAVING IMPROVED WET AGEING PROPERTIES

The present invention relates to a crosslinkable polymer composition, comprising (i) a polyolefin, (ii) a polar copolymer, and (iii) a glycerol ester compound.

Heat-resistant hydrocarbon elastomer composition

Crosslinkable polymer composition

HANDLE FOR ISOLATED ELECTRIC ENERGY

composite insulation

composition and article

AIRCRAFT TIRE

The present invention relates to an aircraft tire, the tread of which comprises a rubber composition based on at least one first diene elastomer, a reinforcing filler and a crosslinking system, which first diene elastomer comprises ethylene units and diene units comprising a carbon-carbon double bond, which units are distributed randomly within the first diene elastomer, the ethylene units representing at least 50 mol % of the combined monomer units of the first diene elastomer. Such a tire exhibits a performance on landing which is greatly improved, in particular with regard to the wear resistance at very high speeds.

Olefin copolymers containing hydrolytically cleavable linkages and use thereof in degradable products

The invention is directed to olefin copolymers composed of nonhydrolyzable monomer units and hydrolyzable monomer units, the latter resulting from copolymerization of monomers containing a linkage that is hydrolytically cleavable in the presence of aqueous base or aqueous acid. Generally, the hydrolyzable monomer units represent a significant fraction of the copolymer, such that upon hydrolysis, a substantial portion of the copolymer is degraded into low molecular weight fragments. Also provided are degradable articles that are at least partially composed of a degradable copolymer in which hydrolyzable monomer units represent at least 20 mole % of the copolymer. These degradable articles include agricultural film products, adhesive tape substrates, bed linens, containers, disposable absorbent articles, packaging materials, bags, labels, pillow cases, protective clothing, surgical drapes, sponges, tampon applicators, disposable syringes, temporary enclosures and temporary siding, toys, wipes ...

Tree resistant cable

A cable comprising one or more electrical conductors or a core of one or more electrical conductors, each conductor or core being surrounded by an insulating composition comprising a mixture of (i) about 20 to about 50 percent by weight of a homogeneous polyethylene having a polydispersity in the range of about 1.5 to about 3.5 and an essentially uniform comonomer distribution; and (ii) about 50 to about 80 percent by weight of a homopolymer of ethylene made by a high pressure process.

Olefinic thermoplastic elastomer laminate

The present invention proposes a molded product having excellent moldability and ability to be processed into parts, as well as excellent scratch resistance. The invention provides a multilayered laminate composed of two or more layers, having a structure in which a layer (I) comprising at least one selected from an olefinic thermoplastic elastomer composition (A) and an olefinic resin (B), and a layer (II) comprising an olefinic thermoplastic elastomer composition (C) are laminated. The olefinic thermoplastic elastomer composition (C) is a composition comprising [1] a specific syndiotactic polypropylene copolymer (c), and [2] at least one selected from a polypropylene resin (d) and an olefinic thermoplastic elastomer (e).

CROSSLINKABLE POLYMER COMPOSITION

Water tree retarding composition

Unsaturated copolymer based on olefin and production and use thereof

АНТИВИБРАЦИОННАЯ РЕЗИНОВАЯ КОМПОЗИЦИЯ, СШИТАЯ АНТИВИБРАЦИОННАЯ РЕЗИНОВАЯ КОМПОЗИЦИЯ И АНТИВИБРАЦИОННАЯ РЕЗИНА

... 1. Виброизоляционная резиновая композиция, содержащая:каучуковый компонент, имеющий сополимер сопряженное диеновое соединение/несопряженный олефин, и полимер на основе сопряженного диена;вулканизирующий агент, имеющий бисмалеимидное соединение; иN-фенил-N-(трихлорметилтио)бензолсульфонамид.2. Виброизоляционная резиновая композиция по п. 1, в которой содержание бисмалеимидного соединения составляет 1,0-5,0 мас.ч. на 100 мас.ч. каучукового компонента, и содержание N-фенил-N-(трихлорметилтио)бензолсульфонамида составляет 0,2-4 частей масс. на 100 мас.ч. каучукового компонента.3. Виброизоляционная резиновая композиция по п. 1, дополнительно содержащая 0,2-1,0 мас.ч. серы на 100 мас.ч. каучукового компонента.4. Виброизоляционная резиновая композиция по п. 1, в которой содержание цис-1,4 связей в сополимере сопряженное диеновое соединение/несопряженный олефин составляет 50% или более во фрагменте, полученном из сопряженного диенового соединения.5. Виброизоляционная резиновая композиция по п.

ELEKTRISCHE BAUTEILE MIT KUNSTSTOFFISOLIERTEN ODER HALBLEITERELEMENTEN

Polypropylenharzzusammensetzung für Fahrzeuginnenmaterialien

Die vorliegende Erfindung betrifft eine Polypropylenharzzusammensetzung, insbesondere eine Zusammensetzung, die ein Ethylen/Propylenblockcopolymer, ein Ethylen/alpha-Olefincopolymerkautschuk, einen Styrol-basierten Polymerkautschuk, einen Polypropylen-Siliconkautschukmasterbatch, eine Magnesiumverbindung und einen anorganischen Füller umfasst. Die Polypropylenharzzusammensetzung der vorliegenden Erfindung zeigt überlegene Steifigkeit, Kraftzfestigkeit, Glanz, hervorragende Laserverarbeitbarkeit und Schlagzähigkeit bei geringer Temperatur und auch überlegene Fluidität. Daher ist sie zur Herstellung von Innenmaterialien eines Fahrzeugs, wie z. B. eines Armaturenbretts, anwendbar, insbesondere ist die vorliegende Erfindung zur Herstellung einer Armaturenbrettanordnung mit einem einsetzbaren Airbag geeignet, die keine Beschichtung benötigt.

Insulation composition

Thermoplastic Vulcanizates and Method of Making the Same

Described herein are thermoplastic vulcanizates comprising thermoplastic resin, an at least partially vulcanized rubber dispersed in the thermoplastic resin, and process oil. The process oil in the thermoplastic vulcanizate may be selected from extension oil, free oil, curative-in-oil, and/or combination thereof. At least a portion of the process oil in the thermoplastic vulcanizate is a low aromatic/sulfur content oil and has an aromatic content of less than 5 wt %, and a sulfur content of less than 0.03 wt %, based on the weight of that portion of the process oil. The thermoplastic vulcanizate exhibits improved gravimetric fogging properties. 1. A thermoplastic vulcanizate comprising the dynamically vulcanized product of thermoplastic resin , rubber , process oil , and vulcanizing agent ,wherein the process oil is selected from extension oil, free oil, curative-in-oil, and combinations thereof, (i) an aromatic content of less than 5 wt %, and', '(ii) a sulfur content of less than 0.03 wt %, and, 'wherein all of the process oil has, based on the weight of the process oil,'}wherein the thermoplastic vulcanizate has a gravimetric fogging, as measured by DIN 17501B, of less than 2 milligrams.2. The thermoplastic vulcanizate of claim 1 , wherein the process oil has an aromatic content of less than 3.5 wt % based on the weight of the process oil.3. The thermoplastic vulcanizate of claim 1 , wherein the process oil has a sulfur content of less than 0.003 wt % based on the weight of the process oil.4. The thermoplastic vulcanizate of claim 1 , wherein the process oil has a percentage of aromatic carbon claim 1 , as determined by ASTM D2140 claim 1 , of less than 2%.5. The thermoplastic vulcanizate of claim 1 , wherein the weight ratio of process oil to rubber is from 0.5:1 to 2:1.6. (canceled)7. (canceled)8. The thermoplastic vulcanizate of claim 1 , wherein the thermoplastic vulcanizate has a gravimetric fogging claim 1 , as measured by DIN 17501B claim 1 , of less than ...

THERMOPLASTIC ELASTOMER COMPOSITION HAVING EXCELLENT MOLDING APPEARANCE AND A MOLDED PRODUCT OBTAINED THEREFROM

The present invention relates to a thermoplastic elastomer composition comprising 10 to 80 parts by mass of polyolefin resin (A), 10 to 80 parts by mass of styrene-based thermoplastic elastomer (B), and 1 to 20 parts by mass of at least partially crosslinked rubber (C) (with the total amount of the components (A), (B) and (C) being 100 parts by mass), wherein the composition has a type D hardness (i.e., the instantaneous value) of 35 or more and 70 or less in accordance with JIS K6253, and relates to a molded thermoplastic elastomer product obtained by molding the composition. 1. A thermoplastic elastomer composition comprising 10 to 80 parts by mass of polyolefin resin (A) , 10 to 80 parts by mass of styrene-based thermoplastic elastomer (B) , and 1 to 20 parts by mass of at least partially crosslinked rubber (C) (with the total amount of the components (A) , (B) and (C) being 100 parts by mass) , wherein the composition has a type D hardness (i.e. , the instantaneous value) of 35 or more and 70 or less in accordance with JIS K6253.2. The thermoplastic elastomer composition according to claim 1 , comprising 0 parts by mass or more and 10 parts by mass or less of plasticizer (D) relative to 100 parts by mass of the total amount of the components (A) claim 1 , (B) and (C).3. The thermoplastic elastomer composition according to claim 1 , wherein the rubber (C) comprises an ethylene-α-olefin copolymer rubber and/or an ethylene-α-olefin-non-conjugated polyene copolymer rubber.4. A molded thermoplastic elastomer product obtained by molding the thermoplastic elastomer composition according to .5. A molded thermoplastic elastomer product obtained by injection molding the thermoplastic elastomer composition according to .61212. The molded thermoplastic elastomer product according to claim 4 , wherein a ratio (L/L) of a thickness of thickest part (L) to a thinnest part (L) of the molded product in a direction perpendicular to flowing direction of the resin during molding is ...

RUBBER COMPOSITION

The invention relates to a rubber composition which comprises an elastomer which is a copolymer of ethylene and of a 1,3-diene which comprises ethylene units which represent more than 50 mol % of the monomer units of the copolymer, the 1,3-diene being 1,3-butadiene or isoprene, 35 to 100 phr of a reinforcing filler which comprises a silica, a plasticizing system comprising a hydrocarbon plasticizing resin and a hydrocarbon liquid plasticizing agent, it being understood that the total content of hydrocarbon plasticizing resin and of hydrocarbon liquid plasticizing agent is greater than 10 phr and less than or equal to 80 phr. Such a composition confers on a tread of a tire an improved performance compromise between grip, roadholding and rolling resistance. 1. A rubber composition which comprises:an elastomer which is a copolymer of ethylene and of a 1,3-diene which comprises ethylene units which represent more than 50 mol % of the monomer units of the copolymer, the 1,3-diene being 1,3-butadiene or isoprene,35 to 100 phr of a reinforcing filler which comprises a silica,a plasticizing system comprising a hydrocarbon plasticizing resin and a liquid hydrocarbon plasticizing agent, wherein the total content of the hydrocarbon plasticizing resin and of the liquid hydrocarbon plasticizing agent is greater than 10 phr and less than or equal to 80 phr.2. The rubber composition according to claim 1 , in which the ethylene units in the copolymer represent more than 60 mol % of the monomer units of the copolymer.4. The rubber composition according to claim 3 , in which the molar percentages of the units of formula (I) and of the units of formula (II-1) in the copolymer claim 3 , respectively o and p claim 3 , satisfy the following equation (eq. 1) claim 3 , o and p being calculated on the basis of all the monomer units of the copolymer{'br': None, 'i': 'o+p≤', '#text': '0<25 \u2003\u2003(eq. 1),'}5. The rubber composition according to claim 1 , in which the copolymer is a ...

Rubber composition made from a highly saturated diene elastomer and a dithiosulfate salt

A rubber composition based at least on an elastomer matrix, on a reinforcing filler and on a vulcanization system is provided. The elastomer matrix comprises a highly saturated elastomer and from 0 to less than 30 phr of natural rubber. The highly saturated diene elastomer contains 1,3-diene units and more than 50 mol % of ethylene units. The vulcanization system comprises a dithiosulfate salt of formula MO3S—S-A-S—SO3M in which the symbol A represents an alkanediyl group or a group comprising two or more alkanediyl units, which units are connected in pairs via an oxygen or sulfur atom, via a group of formula —SO2—, —NH—, —NH2+—, —N(C1-C16 alkyl)- or —COO—, or via an arylene or cycloalkylene group, and the symbol M represents a metal atom. The invention makes it possible to achieve an improved compromise between bubble formation in the rubber composition on exiting from the curing presses and its hysteresis.

TREAD FOR A TIRE

A tire having a rubber tread comprises a first radially inner layer C1 and a second radially outer layer C2, the first and second layers being intended to be in contact with a ground on which they are running, in new or worn condition, in which the rubber composition of the first layer C1 comprises more than 50 phr of a copolymer of ethylene and of a 1,3-diene, a reinforcing filler and a plasticizing system, the 1,3-diene being 1,3-butadiene or isoprene and the ethylene units in the copolymer representing more than 50 mol % of all the monomer units of the copolymer. 115.-. (canceled)16. A tire having an axis of rotation and comprising a crown extended by two sidewalls and two beads , a carcass reinforcement anchored in the two beads , a crown reinforcement and a rubber tread radially outside the crown reinforcement , the tread comprising a first radially inner layer C1 and a second radially outer layer C2 , and the first and second layers being intended to be in contact with a ground on which they are running , in new or worn condition ,wherein the rubber composition of the first layer C1 comprises more than 50 phr of a copolymer of ethylene and of a 1,3-diene, a reinforcing filler and a plasticizing system, the 1,3-diene being 1,3-butadiene or isoprene and ethylene units in the copolymer representing more than 50 mol % of all the monomer units of the copolymer.17. The tire according to claim 16 , wherein the 1 claim 16 ,3-diene is 1 claim 16 ,3-butadiene.19. The tire according to claim 18 , wherein molar percentages of the units of formula (I) and of the units of formula (II) in the copolymer claim 18 , respectively o and p claim 18 , satisfy the following equation 1 claim 18 , o and p being calculated on a basis of all the monomer units of the copolymer{'br': None, 'i': 'o+p≤', '#text': '0<25\u2003\u2003(eq. 1).'}20. The tire according to claim 16 , wherein the copolymer of ethylene and of a 1 claim 16 ,3-diene bears at the chain end a functional group F1 which is ...

THERMOPLASTIC ELASTOMER COMPOSITION, USE THEREOF, METHOD FOR PRODUCING SAME, ETHYLENE/a-OLEFIN/UNCONJUGATED POLYENE COPOLYMER AND USE THEREOF

[Problem] The purpose of the invention is to provide: a thermoplastic elastomer composition capable of providing molded articles that are lightweight, have better oil resistance than those provided by conventional cross-linked thermoplastic elastomers, and have hardness and mechanical properties such as tensile strength and tensile elongation that are equal to or superior to those provided by conventional cross-linked thermoplastic elastomers; and an ethylene/α-olefin/unconjugated polyene copolymer having little compression set at low temperature as well as flexibility and an excellent balance of rubber elasticity at low temperature and tensile strength at normal temperature. 1. A thermoplastic elastomer composition obtained by dynamically cross-linking a mixture containinga crystalline olefin polymer (A),an ethylene.α-olefin (C4-C20).non-conjugated polyene copolymer (1B) satisfying the following requirements (1) and (2), anda phenol resin-based cross-linking agent (C); {'br': None, 'i': B', 'EX]+', 'Y', 'E', 'X]+[Y, 'value=([2[])/[2×[]×([])]\u2003\u2003(i),'}, '(1) a B value represented by the following equation (i) is 1.20 to 1.80wherein [E], [X], and [Y] represent a mole fraction of structural units derived from the ethylene, a mole fraction of structural units derived from the C4-C20 α-olefin, and a mole fraction of structural units derived from the non-conjugated polyene respectively, and [EX] represents a diad chain fraction of the structural units derived from the ethylene-the structural units derived from the C4-C20 α-olefin; and(2) in the copolymer (1B), a molar ratio of the structural units derived from the ethylene to the structural units derived from the α-olefin (C4-C20) is 40/60 to 90/10.2. The thermoplastic elastomer composition according to claim 1 , wherein the α-olefin of the ethylene.α-olefin.non-conjugated polyene copolymer (1B) is 1-butene.3. The thermoplastic elastomer composition according to claim 1 , wherein the mixture further comprises 2 ...

Heat resistant hydrocarbon elastomer compositions

Disclosed herein is a curable composition comprising ethylene copolymer elastomer, a relatively small amount of a polyamide, and optionally a compatibilizer wherein curable composition demonstrates improved heat aging properties without the loss of tensile strength. Also disclosed is the process for making such curable ethylene copolymer elastomer.

Thermoplastic elastomer composition and method for producing same

Provided is a thermoplastic elastomer composition with which it is possible to obtain a molded article having exceptional low-temperature impact resistance. A thermoplastic elastomer composition is produced that contains a crystalline olefin polymer (A) and an ethylene-α-olefin (C 4 - 20 )—unconjugated polyene copolymer (B) that satisfies requirements (1) and (2). (1) The B value represented by the equation: ([EX]+2[Y])/(2×[E]×([X]+[Y])) is 1.20 or higher. [E], [X] and [Y] respectively indicate the molar fraction of structural units derived from ethylene, the molar fraction of structural units derived from C 4 - 20 α-olefin and the molar fraction of structural units derived from unconjugated polyene, and [EX] indicates the diad chain fraction of structural units derived from ethylene-structural units derived from C 4 - 20 α-olefin. (2) The molar ratio of structural units derived from ethylene with respect to structural units derived from α-olefin (C 4 - 20 ) of copolymer (B) is 40/60-90/10.

Thermoplastic polymer composition for micro 3d printing and uses thereof

A composition for extrusion and deposition by a three-dimensional (3D) printer is provided. The composition comprises a thermoplastic elastomer (TPE), particulate matter having particles in the range of about 5 nm to about 10 μm in diameter, and a solvent. Uses of the composition for 3D printing microstructures, including multiwall plate devices, are also provided.

RUBBER COMPOSITION AND A SEALING MATERIAL FOR FUEL CELL SEPARATORS

A rubber composition comprising a nitroxide compound crosslinking agent containing 2.3 to 5.0 parts by weight of organic peroxide having a one-hour half-life temperature of 110 to 130° C., based on 100 parts by weight of an ethylene-butene-non-conjugated diene copolymer. Then, the ethylene-butene-non-conjugated diene copolymer can be used by being blended with EPDM in an amount of 50 wt % or less in the total amount of the ethylene-butene-non-conjugated diene copolymer and EPDM. A sealing material for fuel cell separators comprising a crosslinked molded article of the rubber composition, having functions required as a sealing material for separators, and having improved low temperature sealing properties and scorch resistance as well as excellent injection molding properties. 1: A rubber composition comprising a nitroxide compound crosslinking agent containing 2.3 to 5.0 parts by weight of organic peroxide having a one-hour half-life temperature of 110 to 130° C. , based on 100 parts by weight of an ethylene-butene-non-conjugated diene copolymer.2: The rubber composition according to claim 1 , wherein the organic peroxide having a one-hour half-life temperature of 110 to 130° C. is a peroxyketal-based or peroxyester-based organic peroxide.3: The rubber composition according to claim 1 , wherein the nitroxide compound crosslinking agent is a nitroxide compound-crosslinking accelerator composition crosslinking agent.4: The rubber composition according to claim 1 , wherein the ethylene-butene-non-conjugated diene copolymer is blended with EPDM in an amount of 50 wt % or less in the total amount of the ethylene-butene-non-conjugated diene copolymer and EPDM.5: The rubber composition according to claim 1 , which does not contain the plasticizers.6: The rubber composition according to claim 1 , which does not contain a resorcinol-based compound-melamine-based compound claim 1 , an aluminate-based coupling agent claim 1 , or a silane coupling agent.7: The rubber ...

Foamed Polyethylene Compositions

A foamable or foamed article comprising a diene terpolymer, the diene terpolymer comprising (or consisting essentially of) from 0.01 wt % to 10.0 wt % diene derived units, and 1.0 wt % to 20 wt % of C 4 to C 10 α-olefin derived units based on the weight of the diene terpolymer, wherein the diene terpolymer: a) has a g′ vis of less than 0.90; b) has an Mw within a range of from 100,000 g/mol to 500,000 g/mol; c) has an Mw/Mn within the range of from 3.5 to 12.0; and d) an Mz/Mn of greater than 7.0. Inventive articles comprise a blend of a relatively high density linear polyethylene and the diene terpolymer.

Bimodal PE Resins with Improved Melt Strength

A method comprising introducing a polymerization feed comprising an α-olefin, a diluent, and a diene to a polymerization system, under polymerization conditions, whereby a polymer product is produced, wherein the diene is present at a level in the range of from about 1 ppm to about 1000 ppm based on the diluent.

Precursor compositions for an insulation, insulated rocket motors, and related methods

A precursor composition comprising, before curing, ethylene propylene diene monomer (EPDM), an aramid, and a carbon material comprising carbon nanotubes, graphite, or a combination thereof. A rocket motor including a reaction product of the precursor composition and a method of insulating a rocket motor are also disclosed.

STYRENE COPOLYMER COMPOSITION WITH IMPROVED RESIDUAL GLOSS

Thermoplastic polymer compositions (P) comprising 90 to 99.9 wt.-% of at least one styrene-based copolymer, 0.1 to 10 wt.-% of at least one copolymer at least comprising repeating units derived from at least one α-olefin monomer and at least one vinyl-aromatic monomer, at least one inorganic phosphate compound, at least one polyolefin wax and optionally at least one colorant, dye or pigment, and/or at least one further additive show improved properties with respect to residual gloss after abrasion combined with improved melt flow characteristics while heat resistance is not affected. 115-. (canceled)16. A thermoplastic polymer composition (P) comprising:(A) 90 to 99.9 wt.-%, based on the total weight of the thermoplastic polymer composition (P), of at least one styrene-based copolymer; (B-1) 75 to 98 wt.-%, based on the total weight of the copolymer composition (B), of at least one copolymer at least comprising repeating units derived from at least one α-olefin monomer and at least one vinyl-aromatic monomer;', '(B-2) 1 to 25 wt.-%, based on the total weight of the copolymer composition (B), of at least one inorganic phosphate compound; and', '(B-3) 1 to 22 wt.-%, based on the total weight of the copolymer composition (B), of at least one polyolefin wax;, '(B) 0.1 to 10 wt.-%, based on the total weight of the thermoplastic polymer composition (P), of at least one copolymer composition comprising(C) 0 to 9.9 wt.-%, based on the total weight of the thermoplastic polymer composition (P), of at least one colorant, dye, or pigment; and(D) 0 to 3 wt.-%, based on the total weight of the thermoplastic polymer composition (P), of at least one further additive.17. The thermoplastic polymer composition (P) according to comprising:(A) 95 to 99.5 wt.-%, based on the total weight of the thermoplastic polymer composition (P), of at least one styrene-based copolymer; (B-1) 75 to 96 wt.-%, based on the total weight of the copolymer composition (B), of at least one copolymer at least ...

COMPOSITION COMPRISING HETEROPHASIC PROPYLENE COPOLYMER

The invention relates to a composition comprising (A) a heterophasic propylene copolymer and (B) a block copolymer, wherein the heterophasic propylene copolymer consists of (a) a propylene-based matrix, wherein the propylene-based matrix consists of a propylene homopolymer and/or a propylene-α-olefin copolymer consisting of at least 70 wt % of propylene and at most 30 wt % of α-olefin, based on the total weight of the propylene-based matrix and wherein the propylene-based matrix is present in an amount of 60 to 95 wt % based on the total heterophasic propylene copolymer and (b) a dispersed ethylene-α-olefin copolymer, wherein the dispersed ethylene-α-olefin copolymer is present in an amount of 40 to 5 wt % based on the total heterophasic propylene copolymer and wherein the sum of the total amount of propylene-based matrix and total amount of the dispersed ethylene-α-olefin copolymer in the heterophasic propylene copolymer is 100 wt %, and wherein the block copolymer comprises a terminal block comprising styrene or alpha-methylstyrene and wherein the ratio of the melt flow rate of (A) the heterophasic propylene copolymer (MFIheterophasic) and the melt flow rate of (B) the block copolymer (MFIblock) is at most 50, preferably at most 40, at most 30, at most 25 or at most 20, wherein MFIheterophasic and MFIblock are measured in accordance with ISO 1133 using a 2.16 kg weight and at a temperature of 230° C. 1. A composition comprising (A) a heterophasic propylene copolymer and (B) a block copolymer ,wherein the heterophasic propylene copolymer consists of(a) a propylene-based matrix,wherein the propylene-based matrix consists of a propylene homopolymer and/or a propylene-α-olefin copolymer consisting of at least 90 wt % of propylene and at most 10 wt % of α-olefin, based on the total weight of the propylene-based matrix, andwherein the propylene-based matrix is present in an amount of 60 to 95 wt % based on the total heterophasic propylene copolymer, and(b) a dispersed ...

ETHYLENE AND ISOPRENE COPOLYMER

A copolymer of ethylene and of isoprene, which comprises from 10 to 35 mol % of isoprene units, at least 70% of which are in the 3,4 configuration and a portion of which is in the 1,2 configuration is provided. A copolymer of this type with a reduced crystallinity is synthesized with a much higher productivity than its homologues of ethylene and of butadiene, and also confers improved curing properties on rubber compositions. 1. A copolymer of ethylene and of isoprene , the copolymer comprising from 10 to 35 mol % of isoprene units , at least 70% of which are in the 3 ,4 configuration and a portion of which is in the 1 ,2 configuration.2. The copolymer according to claim 1 , in which the isoprene units in the 3 claim 1 ,4 configuration and the isoprene units in the 1 claim 1 ,2 configuration represent at least 75 mol % of the isoprene units of the copolymer.3. The copolymer according to claim 1 , which copolymer contains isoprene units in the 1 claim 1 ,4-trans configuration.4. The copolymer according to claim 1 , in which the isoprene units represent from 15 to 30 mol % of the isoprene units and of the ethylene units.5. The copolymer according to claim 1 , which copolymer is a random copolymer.6. The copolymer according to claim 1 , which copolymer has a glass transition temperature of less than −35° C.7. The copolymer according to claim 1 , which copolymer has a glass transition temperature of between −60° C. and −35° C.8. The copolymer according to claim 1 , which copolymer is an elastomer.9. A process for the preparation of a copolymer of ethylene and of isoprene defined in claim 1 , which comprises the copolymerization of ethylene and of isoprene in the presence of a catalytic system based at least on a metallocene of formula (I) and on an organomagnesium compound of formula (II){'br': None, 'sup': 1', '2, 'sub': 4', '(1+y)', 'y', 'x, 'P(Cp)(Cp)Nd(BH)-L-N\u2003\u2003(I)'}{'br': None, 'sup': 1', '2, 'MgRR\u2003\u2003(II)'}{'sup': 1', '2, 'sub': 13', '8, 'Cpand ...

PROPYLENE-BASED RESIN COMPOSITION

Disclosed is a propylene-based resin composition comprising more than 15 parts by mass and 40 parts by mass or less of an ethylene/α-olefin copolymer (E1) and 4 to 20 parts by mass of an ethylene/α-olefin/diene copolymer (E2), and comprising also a propylene-based polymer (P1) having an amount of a n-decane-soluble part at 23° C. of 5 to 25% by mass, wherein the ethylene content of the n-decane-soluble part is more than 40% by mass and 60% by mass or less, a propylene homopolymer (P2) and an inorganic filler (F) [providing that the total amount of the components (P1), (P2), (E1), (E2) and (F) is taken as 100 parts by weight]. The propylene-based resin composition is capable of producing a molded article which is excellent in mechanical properties, unnoticeable flow marks, low gloss. 1. A propylene-based resin composition comprising{'b': '1', '40 to 60 parts by mass of a propylene-based polymer (P) having a melt flow rate (230° C., under a load of 2.16 kg) of more than 100 g/10 min and 130 g/10 min or less and having an amount of a n-decane-soluble part at 23° C. of 5 to 25% by mass, wherein the ethylene content of the n-decane-soluble part is more than 40% by mass and 60% by mass or less,'}{'b': '2', '5 to 20 parts by mass of a propylene homopolymer (P),'}{'b': '1', 'more than 15 parts by mass and 40 parts by mass or less of an ethylene/α-olefin copolymer (E),'}{'b': '2', '4 to 20 parts by mass of an ethylene/α-olefin/diene copolymer (E), and'}0 part by mass or more and less than 36 parts by mass of an inorganic filler (F){'b': 1', '2', '1', '2, '[providing that the total amount of the components (P), (P), (E), (E) and (F) is taken as 100 parts by mass].'}2. A propylene-based resin composition comprising{'b': '1', '20 to 45 parts by mass of a propylene-based polymer (P) having a melt flow rate (230° C., under a load of 2.16 kg) of more than 80 g/10 min and 100 g/10 min or less and having an amount of a n-decane-soluble part at 23° C. of 5 to 25% by mass, wherein the ...

POLYCARBONATE RESIN COMPOSITION

A resin composition comprising 1 to 20 parts by weight of (C) at least one styrene-based thermoplastic elastomer (component C) selected from the group consisting of a styrene-ethylene.propylene-styrene block copolymer (SEPS), a styrene-ethylene-butylene-styrene block copolymer (SEBS) and a styrene-butadiene-butylene-styrene block copolymer (SBBS) based on 100 parts by weight of the total of (A) a polycarbonate-based resin (component A) and (B) a polyolefin-based resin having a MFR at 230° C. under a load of 2.16 kg of not less than 40 g/10 min (component B). The resin composition is excellent in mechanical properties, chemical resistance, appearance and tape peeling resistance. 1. A resin composition comprising 1 to 20 parts by weight of (C) at least one styrene-based thermoplastic elastomer (component C) selected from the group consisting of a styrene-ethylene-propylene-styrene block copolymer (SEPS) , a styrene-ethylene-butylene-styrene block copolymer (SEGS) and a styrene-butadiene-butylene-styrene block copolymer (SBBS) based on 100 parts by weight of the total of (A) a polycarbonate-based resin (component A) and (B) a polyolefin-based resin having a MFR at 230° C. under a load of 2.16 kg of not less than 40 g/10 min (component B).2. The resin composition according to which comprises 1 to 10 parts by weight of a graft polymer (component D) based on 100 parts by weight of the total of the components A and B.3. The resin composition according to which comprises 0.01 to 30 parts by weight of a flame retardant (component E) based on 100 parts by weight of the total of the components A and B.4. The resin composition according to which comprises 1 to 100 parts by weight of an inorganic filler (component F) based on 100 parts by weight of the total of the components A and B.5. The resin composition according to which comprises 1 to 30 parts by weight of a phosphorus-based flame retardant (component E-2) and 0.01 to 1 part by weight of a hindered amine-based compound ( ...

LAMINATE

An object of the present invention is to provide a laminate of an olefin-type rubber, which is non-polar or has a small polarity and which is difficult to bond with a different material, and a rubber comprising Group 15 elements, which is a different kind of rubber. The laminate according to the present invention includes a structure including, in order, an olefin-type rubber layer (A); an adhesive resin layer (B) containing at least one selected from the group consisting of an ethylene/vinyl acetate copolymer, a silane-modified ethylene/vinyl acetate copolymer, an ethylene/acrylic acid copolymer and an ionomer thereof, and an ethylene/methacrylic acid copolymer and an ionomer thereof; and a layer (C) containing a rubber containing Group 15 elements. 1. A laminate comprising a structure comprising , in order ,an olefin-type rubber layer (A);an adhesive resin layer (B) containing at least one selected from the group consisting of an ethylene/vinyl acetate copolymer, a silane-modified ethylene/vinyl acetate copolymer, an ethylene/acrylic acid copolymer and an ionomer thereof, and an ethylene/methacrylic acid copolymer and an ionomer thereof; anda layer (C) containing a rubber containing Group 15 elements.2. The laminate according to claim 1 , wherein the adhesive resin layer (B) contains at least one selected from the group consisting of an ethylene/vinyl acetate copolymer and a silane-modified ethylene/vinyl acetate copolymer.3. The laminate according to claim 1 , wherein the layer (C) contains a rubber containing nitrogen atoms.4. The laminate according to claim 1 , wherein the layer (C) contains at least one selected from the group consisting of nitrile rubber claim 1 , hydrogenated nitrile rubber claim 1 , and urethane rubber.5. The laminate according to claim 1 , wherein the layer (C) contains nitrile rubber.6. The laminate according to claim 1 , wherein the olefin-type rubber layer (A) contains an ethylene/α-olefin/non-conjugated polyene copolymer.7. The ...

Cable and composition

A cable comprising one or more conductors surrounded by at least an inner semiconductive layer, an insulation layer and an outer semiconductive layer, in that order, wherein the insulation layer is not crosslinked and comprises at least 90 wt % of a polymer composition, said polymer composition comprising: (I) 85.0 to 99.5 wt % of an LDPE; and (II) 0.5 to 15.0 wt % of an HDPE having a density of at least 940 kg/m 3 or 1.5 to 15.0 wt % of an ultra-high molecular weight polyethylene having a Mw of at least 1,000,000.

Ethylene-Propylene-Diene Interpolymer Composition

The present disclosure is directed to a composition and articles containing the composition. The composition includes an ethylene-propylene-diene interpolymer (EPDM) having a rheology ratio greater than 33. The EPDM also has a molecular weight distribution greater than 3.0. The composition has a dissipation factor less than or equal to 0.01 radians as measured in accordance with ASTM D 150 (130° C., 60 Hz).

MULTI-COPOLYMER, RUBBER COMPOSITION, CROSS-LINKED RUBBER COMPOSITION, RUBBER ARTICLE, AND TIRE

A multicomponent copolymer according to the present invention contains a non-conjugated polyene unit, a non-conjugated olefin unit and an aromatic vinyl unit, wherein the content of the aromatic vinyl unit is 5% by mass or more and less than 30% by mass. A crosslinked rubber composition having a high strength, as compared with the case where EPDM is used, while having high weather resistance, a multicomponent copolymer useful for producing a rubber product, and a method for producing the multicomponent copolymer are provided. 1. A multicomponent copolymer comprising a non-conjugated polyene unit , a non-conjugated olefin unit and an aromatic vinyl unit , wherein:the content of the aromatic vinyl unit is 5% by mass or more and less than 30% by mass.2. The multicomponent copolymer according to claim 1 , wherein the content of the non-conjugated polyene unit is 1% by mass or more and 20% by mass or less.3. The multicomponent copolymer according to claim 1 , wherein the content of the non-conjugated olefin unit is more than 50% by mass and 94% by mass or less.4. The multicomponent copolymer according to claim 1 , wherein the weight-average molecular weight of the multicomponent copolymer is 5 claim 1 ,000 to 1 claim 1 ,000 claim 1 ,000.5. The multicomponent copolymer according to claim 1 , wherein the non-conjugated olefin unit is an ethylene unit alone.6. The multicomponent copolymer according to claim 1 , wherein the aromatic vinyl unit comprises a styrene unit.7. The multicomponent copolymer according to claim 1 , wherein the non-conjugated polyene unit comprises at least one selected from a group consisting of a dicyclopentadiene unit claim 1 , a vinylnorbornene unit claim 1 , an ethylidene-norbornene unit and a divinylbenzene unit.8. The multicomponent copolymer according to claim 1 , which is a tercopolymer composed of only a dicyclopentadiene unit claim 1 , an ethylene unit and a styrene unit.9. A rubber composition comprising the multicomponent copolymer of .10. ...

RUBBER COMPOSITION AND TIRE

Provided is a rubber composition that can achieve excellent breaking resistance while having high operability. A rubber composition comprises: a rubber component containing a multicomponent copolymer that contains a conjugated diene unit, a non-conjugated olefin unit, and an aromatic vinyl unit; and an α-olefin having a number-average molecular weight (Mn) of 50 to 1,000. 1. A rubber composition comprising:a rubber component containing a multicomponent copolymer that contains a conjugated diene unit, a non-conjugated olefin unit, and an aromatic vinyl unit; andan α-olefin having a number-average molecular weight (Mn) of 50 to 1,000.2. The rubber composition according to claim 1 , wherein a content of the α-olefin is 10 parts to 80 parts by mass with respect to 100 parts by mass of the rubber component.3. The rubber composition according to claim 1 , wherein a carbon number of the α-olefin is 3 to 30.4. The rubber composition according to claim 1 , wherein the α-olefin is a linear α-olefin.5. The rubber composition according to claim 1 , wherein a content of the multicomponent copolymer in the rubber component is 10 mass % or more.6. The rubber composition according to claim 1 , wherein in the multicomponent copolymer claim 1 , a content of the conjugated diene unit is 1 mol % to 50 mol % claim 1 , a content of the non-conjugated olefin unit is 40 mol % to 97 mol % claim 1 , and a content of the aromatic vinyl unit is 2 mol % to 35 mol %.7. The rubber composition according to claim 1 , wherein an endothermic peak energy of the multicomponent copolymer from 0° C. to 120° C. measured by a differential scanning calorimeter (DSC) is 10 J/g to 150 J/g.8. The rubber composition according to claim 1 , wherein a melting point of the multicomponent copolymer measured by a differential scanning calorimeter (DSC) is 30° C. to 130° C.9. The rubber composition according to claim 1 , wherein a glass transition temperature of the multicomponent copolymer measured by a differential ...

TIRE HAVING A COMPOSITION COMPRISING AN ETHYLENE-RICH ELASTOMER, A PEROXIDE AND A SPECIFIC ACRYLATE DERIVATIVE

A tire comprises a rubber composition based on at least one elastomeric matrix mainly comprising a random copolymer comprising ethylene units and conjugated diene units, the mole fraction of the ethylene units in the copolymer being within a range extending from 50% to 95%; a peroxide; and a specific polyfunctional acrylate derivative. 115.-. (canceled)17. The tire according to claim 16 , wherein the conjugated diene units are selected from the group consisting of butadiene units claim 16 , isoprene units and mixtures thereof.18. The tire according to claim 16 , wherein the mole fraction of the ethylene units in the random copolymer comprising ethylene units and conjugated diene units is within a range extending from 60% to 90%.19. The tire according to claim 16 , wherein R claim 16 , Rand Reach represent a hydrogen atom.20. The tire according to claim 16 , wherein the heteroatom(s) of A are selected from the group consisting of oxygen claim 16 , sulfur claim 16 , nitrogen claim 16 , silicon and phosphorus atoms claim 16 , and combinations thereof.21. The tire according to claim 16 , wherein A represents a linear claim 16 , branched or cyclic C-Chydrocarbon group claim 16 , interrupted and/or substituted by one or more oxygen and/or sulfur atoms.22. The tire according to claim 16 , wherein A represents a linear claim 16 , branched or cyclic C-Chydrocarbon group claim 16 , interrupted by one or more oxygen and/or sulfur atoms.23. The tire according to claim 16 , wherein the at least one polyfunctional acrylate derivative of formula (I) is selected from the group consisting of dipentaerythritol penta(meth)acrylate claim 16 , dipentaerythritol hexa(meth)acrylate claim 16 , diethylene glycol di(meth)acrylate claim 16 , dipropylene glycol di(meth)acrylate claim 16 , ethoxylated hexanediol di(meth)acrylate claim 16 , propoxylated hexanediol di(meth)acrylate claim 16 , ethoxylated trimethylpropane tri(meth)acrylate claim 16 , propoxylated trimethylpropane tri(meth)acrylate ...

Bimodal PE Resins with Improved Melt Strength

A method comprising introducing a polymerization feed comprising an α-olefin, a diluent, and a diene to a polymerization system, under polymerization conditions, whereby a polymer product is produced, wherein the diene is present at a level in the range of from about 1 ppm to about 1000 ppm based on the diluent. 1. A method comprising:introducing a polymerization feed comprising an α-olefin, a diluent, and a diene to a first polymerization zone, a second polymerization zone, or both the first polymerization zone and the second polymerization zone of a polymerization system comprising the first and the second polymerization zones in series,wherein the diene is present at a level in the range of from about 1 ppm to about 1000 ppm based on an amount of the diluent,polymerizing, whereby a polymer product is produced, wherein the polymer product is a bimodal polyethylene resin, and wherein the bimodal polyethylene resin comprises a high molecular weight (HMW) component and a low molecular weight (LMW) component, wherein the HMW component, the LMW component or both comprise the diene; andadjusting the amount of the diene, the type of the diene, or both the amount and the type of the diene introduced into the first polymerization zone, the second polymerization zone, or both the first polymerization zone and the second polymerization zone to alter the melt strength, the impact strength, the crossover modulus, or a combination thereof of the polymer product.2. The method of claim 1 , wherein the diene is selected from dienes having a boiling point of less than or equal to about 110° C.3. The method of claim 1 , wherein the diene is selected from the group consisting of conjugated dienes claim 1 , non-conjugated dienes claim 1 , and combinations thereof.4. The method of claim 3 , wherein the diene is selected from the group consisting of C6-C15 straight chain hydrocarbon non-conjugated dienes claim 3 , C6-C15 branched chain hydrocarbon non-conjugated dienes claim 3 , C6-C15 ...

Degradable evoh high-barrier composite film

A degradable EVOH high-barrier composite film, characterized in that the materials of various layers in the composite film all obtain approximately-consistent biodegradability by introducing biomass, and the additive amount of the additive master batch in the materials of each layer is controlled within the range of 0.3-15% of the total mass of the materials of the corresponding layer; the hydrophilic activity of the hydrophilic groups in the additive master batch should be greater than or equal to that of the hydrophilic groups in the materials of each layer; by adding the additive master batch, the mole ratios of the hydrophilic groups to carbon atoms of the materials of various layers tend to be consistent, namely, the bioactivities tend to be consistent, so that the degradation rates of the materials of various layers in the composite film tend to be consistent. The present invention makes contribution to obtaining approximately-consistent bioactivities and approximately-consistent biodegradation rates by balancing the mole ratios of the hydrophilic groups to carbon atoms in the materials of various layers, and the appearance, the functions and the physical and mechanical properties of a product remain unchanged.

Rubber composition comprising a highly saturated diene elastomer

The present invention relates to a rubber composition based on a reinforcing filler and on an elastomer matrix comprising a highly saturated diene elastomer comprising at least five distinct units of A, B, C, D and E distributed randomly within the elastomer at respective molar fractions of m %, n %, o %, p % and q %, where m+n+o+p+q=100; m≧50; n+o+p+q≧10; and 15≧p+q≧2. This rubber composition enables a satisfactory degree of stiffness to be reached while maintaining hysteresis properties acceptable for use in the manufacture of tires for running vehicles.

THERMOPLASTIC ELASTOMER

A thermoplastic elastomer includes the following raw materials by mass ratios: 26-33% of SEBS, 65-72% of white mineral oil, 1.5-2.5% of oily expandable polystyrene and 0.008-0.15% of anti-bacterial agent. The thermoplastic elastomer is prepared by the following steps: S1: acquiring SEBS and the oily expandable polystyrene; S2: mixing the raw materials evenly to obtain mixture A; and S3: performing high temperature sterilization treatment on the mixture A to prepare a finished product, wherein S to S3 are processed in an aseptic workshop. In the present invention, the prepared finished elastomer product is environmentally friendly, non-toxic and harmless, and has strong operability. The elastomer has DIY function and can be made into various shapes through various molds. The finished elastomer product is light in weight, soft and smooth, provides a soft feel, and can be used repeatedly. The finished elastomer product has good playability and fun. When the elastomer falls on the ground and is broken, the elastomer has a good dispersion effect on the ground due to good elasticity, and is very aesthetic. 1. A thermoplastic elastomer , comprising the following raw materials by mass ratios: 26-33% of SEBS , 65-72% of white mineral oil , 1.5-2.5% of oily expandable polystyrene and 0.008-0.15% of anti-bacterial agent , andprepared by the following steps:S1: acquiring SEBS and the oily expandable polystyrene;S2: mixing the raw materials evenly to obtain mixture A; andS3: performing high temperature sterilization treatment on the mixture A to prepare a finished product,wherein S1 to S3 are processed in an aseptic workshop.2. The thermoplastic elastomer according to claim 1 , wherein the raw materials by the mass ratios comprise: 72% of white mineral oil claim 1 , 1.5% of oily expandable polystyrene claim 1 , 0.008% of anti-bacterial agent and the balance of SEBS.3. The thermoplastic elastomer according to claim 1 , wherein the raw materials by the mass ratios comprise: 33% of ...

INSULATION COMPOSITION

The present invention relates to a precursor material for an insulation composition, comprising: a crosslinkable graft polymer comprising a polyolefin component and a polyene component; and an antioxidant. The present invention also relates to an insulation composition obtained from the precursor material. 1. A precursor material for an insulation composition , comprising:a crosslinkable graft polymer comprising a polyolefin component and a polyene component; andan antioxidant.2. The precursor material according to claim 1 , wherein the polyolefin component forms a backbone and the polyene component forms one or more side chains grafted onto the backbone.3. The precursor material according to claim 1 , wherein the polyolefin component is derived from a polyolefin comprising polyethylene and/or polypropylene.4. The precursor material according to claim 1 , wherein the polyene component is derived from a polyene comprising 2 or more carbon-carbon double bonds and/or vinyl groups.5. The precursor material according to claim 1 , wherein the polyene component is derived from:a. a polyene selected from the group consisting of 1,7-octadiene; 1,9-decadiene; 1,11-dodecadiene; 1,13-tetradecadiene; 7-methyl-1,6-octadiene; 9-methyl-1,8-decadiene; and mixtures thereof; [{'br': None, 'sub': 2', '3', '2', 'n', '3', '2', '2, 'CH═CH—[Si(CH)—O]—Si(CH)—CH═CH'}, 'wherein n=1 or higher., 'b. a polyene comprising a siloxane having the following formulac. a polyene comprising a divinylsiloxane;d. a polyene selected from the group consisting of farnesene; squalene; limonene; dicyclopentadiene; 1,2,4-trivinylcyclohexane; vinyl norbornene; cyclooctadiene; cyclooctatriene; trans,trans,cis-1,5,9-cyclododecatriene; triallyl isocyanurate (1,3,5-Triallyl-1,3,5-triazinane-2,4,6-trione); triallyl cyanurate (2,4,6-Triallyloxy-1,3,5-triazine) and mixtures thereof.6. The precursor material according to claim 1 , wherein the antioxidant:a. comprises one or more components selected from the group ...

Homogeneous polymer blend and process of making the same

A homogeneous polymer blend comprises a thermoplastic first polymer having a crystallinity of at least 30%; and a second polymer having a crystallinity of more than 5% and being at least partially cross-linked.

Heterogeneous in-situ polymer blend

A heterogeneous in-situ polymer blend comprising a continuous phase comprising a polypropylene having a crystallinity of at least 30% and a melting point temperature T m greater than 130° C., and a heat of fusion ΔH f greater than 65 J/g; and a dispersed phase comprising particles of an elastomeric copolymer dispersed in the continuous phase and having an average particle size of less than 5 micron, the elastomeric copolymer comprising ethylene units and 0.001 to 5 wt % diene by weight of the copolymer, and having a crystallinity of less than 20% and being at least partially cross-linked such that the degree of cross-link is at least 20%.

Homogeneous polymer blend and process of making the same

A homogeneous polymer blend comprises a thermoplastic first polymer having a crystallinity of at least 30%; and a second polymer having a crystallinity of more than 5% and being at least partially cross-linked.

Homogeneous polymer blend and process of making the same

A homogeneous polymer blend comprises a thermoplastic first polymer having a crystallinity of at least 30%; and a second polymer having a crystallinity of more than 5% and being at least partially cross-linked.

Process for preparing in a single reactor polymer blends having a broad molecular weight distribution

Ethylene-based polymer blends having an MWD of at least 2 were made in a single reactor using a mixed constrained geometry catalyst (CGC) system. The process comprises the steps of contacting under polymerization conditions and in a single reaction vessel (i) ethylene, (ii) at least one C3-C20α-olefin, (iii) optionally, at least one polyene, and (iv) a mixed CGC system.

Process for homo- or copolymerization of conjugated dienes and in situ formation of polymer blends and products made thereby

Metal complexes are disclosed containing at least one metal - nitrogen or metal - phosphorus bond, more particularly at least one metal - nitrogen or metal - phosphorus bond and at least one bond by the metal to an aromatic ring system. The preparation of the catalyst and the use of the prepared catalyst to produce homopolymers or copolymers of conjugated dienes or copolymers of conjugated dienes with alpha-olefins are also disclosed. In particular, the production of 1) polymer blends of a) homo- or copolymers of conjugated dienes through polymerization of 1,3-butadiene and/or isoprene with b) copolymers of conjugated dienes with alpha olefins through copolymerization of 1,3-butadiene or isoprene with ethylene, propene, octene or styrene and 2) polymer blends of a) homo- or copolymers of conjugated dienes through polymerization of 1,3-butadiene and/or isoprene with b) homopolymers or copolymers of alpha olefins through homo- or copolymerization of ethylene, propene, octene or styrene in the same reaction system using the catalyst system of the invention is described.

Menetelmä polypropeenin valmistamiseksi

Constrained geometry complexes of titanium, zirconium or hafnium comprising a substituted cyclopentadiene ligand; use as olefin polymerisation catalyst component

Gas phase polymerization of olefins

A gas phase fluidized bed process is described for producing ethylene polymers having improved processability and an MWD of less than about 2.9. Multiple reactors in series or parallel may be used to produce in-situ blended polymers. Each reactor can separately have a constrained geometry catalyst or a conventional Ziegler-Natta catalyst as needed for obtaining in-situ blended polymer with the desired properties as long as there is a constrained geometry catalyst in at least one reactor. Olefin polymers can be produced according to this invention which have low susceptibility to melt fracture, even under high shear stress conditions.

Electrical devices comprising polymeric insulating or semiconducting members

Disclosed are electrically conductive and semiconductive devices utilizing polymers having resistance to water treeing and good dielectric properties. The polymer comprises ethylene polymerized with at least one C 3 to C 20 alpha-olefin and optionally at least one C 3 to C 20 polyene. The polymer utilized has a density in the range of about 0.86 g/cm 3 to about 0.96 g/cm 3 , a melt index in the range of about 0.2 dg/min to about 100 dg/min, a molecular weight distribution in the range of about 1.5 to about 30, and a composition distribution breadth index greater than about 45 percent. For the polymer utilized, the tree rating is generally less than about 40, the power factor is in the range of about 0.0002 to about 0.0005, and the dielectric constant is in the range of about 1.8 to about 2.4.

Constrained geometry addition polymerization catalysts, processes for their preparation, precursors therefor, methods of use, and novel polymers formed therewith

Metal coordination complexes comprising a metal of Group 3 (except Sc), 4-10 or the lanthanide series and a delocalized Π-bonded moiety have said moiety substituted with a constrain-inducing moiety which reduces the angle at the metal between the centroid of said Π-bonded moiety and at least one remaining substituted. Preferably, the complexes comprise a cyclopentadienyl or substituted cyclopentadienyl group forming part of a ring structure in which the metal is both bonded to an adjacent convalent moiety and held in association with the (substituted) cyclopentadienyl moiety. Complexes of said preferred structure are not necessarily constrained sufficiently to reduce the said angle. Amidosilane and amidoalkanediyl compounds are particularly preferred. The complexes of the invention form addition polymerization catalysts with activing cocatalysts such as Lewis acids, ammonium salts, oxidizing agents and, especially, aluminum compounds, particularly aluminum trialkyls. Novel polymers, including ElPE resins and pseudo-random copolymers, can be obtained using the catalysts of the invention.

Polymer compositions, methods of making the same, and articles prepared from the same

The invention provides a composition comprising at least the following: A) an ethylene/α-olefin/polyene interpolymer, B) an ethylene/α-olefin copolymer, C) optionally at least one filler, D) at least one crosslinking agent, E) at least one blowing agent.

Fabricated articles prepared from blends of substantially random ethylene/propylene/vinyl aromatic interpolymers with polypropylene

This invention relates to fabricated articles, including films or sheets prepared from blends of substantially random ethylene/propylene/vinyl aromatic monomer interpolymers with propylene homopolymers or copolymers. The fabricated articles exhibit high toughness, tensile properties and heat resistance and low stress whitening, and further can exhibit desirable optical properties, especially when in the form of a film or sheet.

兩性共聚物及其製造方法及包含其之高分子組合物

Bimodal PE resins with improved melt strength

A method comprising introducing a polymerization feed comprising an α-olefin, a diluent, and a diene to a polymerization system, under polymerization conditions, whereby a polymer product is produced, wherein the diene is present at a level in the range of from about 1 ppm to about 1000 ppm based on the diluent.

Bimodal PE resins with improved melt strength

A method comprising introducing a polymerization feed comprising an α-olefin, a diluent, and a diene to a polymerization system, under polymerization conditions, whereby a polymer product is produced, wherein the diene is present at a level in the range of from about 1 ppm to about 1000 ppm based on the diluent.

Constrained geometry addition polymerization catalysts

Metal complexes having constrained geometry and a process for preparation thereof, addition polymerization catalysts formed therefrom, processes for preparation of such addition polymerization catalysts, methods of use, and novel polymers formed thereby, including ElPE resins and pseudo-random copolymers, are disclosed and claimed.

Process for preparing in a single reactor polymer blends having a broad molecular weight distribution

Ethylene-based polymer blends having an MWD of at least about 2 are made in a single reactor using a mixed constrained geometry catalyst (CGC) system. The process comprises the steps of contacting under polymerization conditions and in a single reaction vessel (i) ethylene, (ii) at least one C 3 -C 20 (α-olefin, (iii) optionally, at least one polyene, and (iv) a mixed CGC system.

Olefin polymerization process using supported constrained geometry catalysts

Metal complexes having constrained geometry and a process for preparation thereof, addition polymerization catalysts formed therefrom, processes for preparation of such addition polymerization catalysts, methods of use, and novel polymers formed thereby, including ElPE resins and pseudo-random copolymers, are disclosed and claimed.

Constrained geometry addition polymerization catalysts

Metal complexes having constrained geometry and a process for preparation thereof, addition polymerization catalysts formed therefrom, processes for preparation of such addition polymerization catalysts, methods of use, and novel polymers formed thereby, including EIPE resins and pseudo-random copolymers, are disclosed and claimed.

Articles having elevated temperature elasticity made from irradiated and crosslinked ethylene polymers and method for making the same

The present invention relates to elastic articles comprising a crosslinked or crosslinkable ethylene polymer and a method for making the same. In particular, the invention relates to a shaped article (e.g. film or fiber) characterized by improved elasticity at elevated temperatures and comprising a substantially cured, irradiated, or crosslinked (or curable, irradiated or crosslinkable) homogeneously branched ethylene polymer. The improved elastic article of the present invention is particularly suitable for use in applications where good elasticity must be maintained at elevated temperatures such as, for example, personal hygiene items and disposable infection-control garments at body temperatures of about 100° F. (38° C.).

Polymer compositions, methods of making the same, and articles prepared from the same

The invention provides a composition comprising at least the following: A) an ethylene/α-olefin/polyene interpolymer, B) an ethylene/α-olefin copolymer, C) optionally at least one filler, D) at least one crosslinking agent, E) at least one blowing agent.

Crosslinked compositions and articles prepared therefrom

The invention provides a crosslinked composition formed by thermally treating a composition comprising at least the following: A) an ethylene-based polymer that has a density less than, or equal to, 0.910 g/cc; B) an olefin-based polymer that has a melt viscosity less than, or equal to, 20,000 cP, at 350°F; and C) a crosslinking agent.

Polymer compositions

The invention provides a composition comprising at least the following: A) a thermoplastic polyurethane; B) an elastomer; C) a polydiene-based polyurethane or a polydiol-based polyurethane; D) a polyoctenamer; and E) a resin selected from the group consisting of the following: i) an indene-coumarone resin, ii) an aromatic hydrocarbon resin, and iii) an aliphatically modified aromatic hydrocarbon resin.

热塑性弹性体组合物

本发明提供一种热塑性弹性体组合物，该热塑性弹性体组合物含有非交联性的结晶性聚烯烃树脂(A)10～60重量份，特定的丙烯-1-丁烯无规共聚物(B)1～30重量份，以及由乙烯、碳原子数为3～20的α-烯烃和非共轭多烯形成的乙烯-α-烯烃-非共轭多烯共聚物橡胶(C)89～10重量份，并利用挤出机进行动态交联而得到，其中，(A)、(B)和(C)的合计为100重量份。根据本发明，提供成型性、经济性优异的热塑性弹性体，该热塑性弹性体能够形成即使不通过粘合剂层对硫化橡胶或热塑性弹性体也产生充分的粘合强度的成型体、以及具有充分的硬度和橡胶弹性的轻量成型体。

熱可塑性彈性體組成物、其用途、其製造方法、乙烯．α-烯烴．非共軛多烯共聚合體及其用途

本發明之目的在於提供一種熱可塑性彈性體組成物，其可成為輕量、具有較習知之交聯型熱可塑性彈性體優異之耐油性、且具有與習知之交聯型熱可塑性彈性體同等以上之硬度、拉伸強度及拉伸伸長率等機械物性的成形體，並且提供一種乙烯‧α-烯烴‧非共軛多烯共聚合體，其於低溫下之壓縮永久變形較小，且具有柔軟性，低溫下之橡膠彈性與常溫下之拉伸強度之平衡優異。 本發明係製造使包含結晶性烯烴系聚合體(A)、滿足特定必要條件之乙烯‧α-烯烴(碳數4~20)‧非共軛多烯共聚合體(1B)、及酚樹脂系交聯劑(C)之混合物進行動態交聯而獲得之熱可塑性彈性體組成物、及滿足特定必要條件之乙烯‧α-烯烴‧非共軛多烯共聚合體(2B)。

열가소성 엘라스토머 조성물 및 그의 제조 방법

저온 내충격성이 우수한 성형체가 될 수 있는 열가소성 엘라스토머 조성물을 제공한다. 결정성 올레핀계 중합체(A)와, 하기 요건(1) 및 (2)를 만족시키는 에틸렌·α-올레핀(탄소수 4∼20)·비공액 폴리엔 공중합체(B)를 포함하는 열가소성 엘라스토머 조성물을 제작한다. (1) 식: ([EX]+2[Y])/〔2×[E]×([X]+[Y])〕로 표시되는 B값이 1.20 이상이다. 여기에서 [E], [X] 및 [Y]는, 각각, 에틸렌 유래의 구조 단위의 몰 분율, 탄소수 4∼20의 α-올레핀 유래의 구조 단위의 몰 분율 및 비공액 폴리엔 유래의 구조 단위의 몰 분율을 나타내고, [EX]는 에틸렌 유래의 구조 단위-탄소수 4∼20의 α-올레핀 유래의 구조 단위의 다이애드 연쇄 분율을 나타낸다. (2) 공중합체(B)의, 에틸렌에서 유래하는 구조 단위와 α-올레핀(탄소수 4∼20)에서 유래하는 구조 단위의 몰비가 40/60∼90/10이다.

Process for preparing in a single reactor polymer blends having a broad molecular weight distribution

Ethylene-based polymer blends having an MWD of at least about 2 are made in a single reactor using a mixed constrained geometry catalyst (CGC) system. The process comprises the steps of contacting under polymerization conditions and in a single reaction vessel (i) ethylene, (ii) at least one C3-C20 alpha-olefin, (iii) optionally, at least one polyene, and (iv) a mixed CGC system.

Constrained geometry addition polymerization catalysts, processes for their preparation, precursors therefor, methods of use, and novel polymers formed therewith

Hafnium or zirconium coordination complexes comprise a cyclopentadienyl or substituted cyclopentadienyl group forming part of a ring structure in which the metal is both bonded to an adjacent amidosilane moiety and held in association with the (substituted) cyclopentadienyl moiety. These complexes form addition polymerization catalysts with activating cocatalysts such as Lewis acids, ammonium salts, oxidizing agents and, especially, aluminum compounds, particularly aluminum trialkyls. Novel polymers, including ElPE resins and pseudo-random copolymers, can be obtained using the catalysts.

Constrained geometry addition polymerization catalysts, processes for their preparation, precursors therefor, methods of use, and novel polymers formed therewith

Titanium coordination complexes comprise a cyclopentadienyl or substituted cyclopentadienyl group forming part of a ring structure in which the metal is both bonded to the (substituted) cyclopentadienyl group by a divalent moiety of specified type containing one or more heteroatoms and held in association with the (substituted) cyclopentadienyl moiety. These complexes form addition polymerization catalysts with activating cocatalysts such as Lewis acids, ammonium salts, oxidizing agents and, especially, aluminum compounds, particularly aluminum trialkyls. Novel polymers, including ElPE resins and pseudo-random copolymers, can be obtained using the catalysts.

Polymers obtainable with a constrained geometry addition polymerization catalyst and process of making atactic alpha-olefin polymers with such catalysts

One or more addition polymerizable monomers are polymerized by catalysts comprising a metal monocyclopentadienyl coordination complex and an activating cocatalyst to form novel polymers, including atactic amorphous poly(alpha-olefins), elastic polyethylenes and pseudo-random copolymers.

Polyolefin compositions having low hardness and low gloss

A polyolefin composition comprising, in percent by weight: A) 20-35% of a propylene homopolymer or copolymer with up to 8% of comonomer(s); B) 65-80% of a copolymer of ethylene and (i) propylene or (ii) CH 2 ═CHR alpha-olefins, where R is a 2-8 carbon alkyl radical, or (iii) a combination thereof, optionally with minor amounts of a diene, containing from 40 to less than 54% of ethylene; wherein the weight ratio B/XS of the content B of copolymer component (B) to the fraction XS soluble in xylene at room temperature, both referred to the total weight of (A)+(B), is of 1.25 or less.

Polyolefin compositions having low hardness and low gloss

A polyolefin composition comprising, in percent by weight: A) 10-25% of a propylene homopolymer or copolymer with up to 8% of comonomer(s); B) 75-90% of a copolymer of ethylene and (i) propylene or (ii) CH 2 ═CHR alpha-olefins, where R is a 2-8 carbon alkyl radical, or (iii) a combination thereof, optionally with minor amounts of a diene, containing from 54 to 65% of ethylene; wherein the weight ratio B/XS of the content B of copolymer component (B) to the fraction XS soluble in xylene at room temperature, both referred to the total weight of (A)+(B), is of 1.50 or less.

Crosslinked foams from blends of ethylene vinyl acetate and ethylene-styrene interpolymers

Ethylene vinyl acetate (EVA)/ethylene-styrene interpolymer (ESI) blends are described that are useful in preparing foams which exhibit improved compression set resistance, dimensional stability and rebound resilience at similar foam densities than known foam systems, e.g. EVA. The cross-linked foams of this invention are particularly useful in fabricating footwear and gasket products.

Revestimento para piso, parede ou teto.

"REVESTIMENTO PARA PISO, PAREDE OU TETO". A invenção refere-se a um revestimento para piso, parede ou teto que compreende um ou mais interpolímeros substancialmente aleatórios, preparados pela polimerização de um ou mais monómeros de alfa-olefina, com um ou mais monómeros aromáticos de vinilideno e/ou um ou mais monómeros de vinilideno cicloalifático ou alifático impedidos, e opcionalmente com outros monómeros etilenicamente insaturados polimerizáveis. O revestimento para piso, parede ou teto possui um bom equilíbrio de propriedades, tais como flexibilidade suficiente e capacidade de se adequar a superfície desiguais ou com contornos para aplicação eficiente a pisos, paredes, ou tetos, resistência suficiente a riscos, resistência suficiente a entalhes, recuperação de entalhes e/ou resistência suficiente a abrasão.

Compositions and adhesives comprising a substantially random interpolymer of at least one vinylidene and at least one vinylidene aromatic monomer or hindered aliphatic vinylidene monomer, and coextruded or laminated multilayer film and tape

Compositions having improved ignition resistance

The present invention relates to compositions having enhanced ignition resistance, comprising: (A) from about 5 to about 90 percent by weight of at least one substantially random interpolymer; (B) from about 10 to about 94.9 percent by weight of at least one filler selected from ammonium polyphosphate, magnesium hydroxide, calcium hydroxide, and aluminum trihydrate; and (C) at least one component selected from; (1) about 5 to about 50 percent by weight of at least one filler; or (2) about 0.5 to about 20 percent by weight of at least one metal borate, and, optionally, about 0.5 to about 10 percent by weight of at least one processing aid; or (3) about 0.1 to about 15 percent by weight of at least one initiator or at least one coupling agent; or (4) about 0.1 to about 20 percent by weight of at least one hindered amine stabilizer.

Interpolymer compositions for use in sound management

Disclosed are novel compositions of ethylene and/or α-olefin/vinyl or vinylidene interpolymers and an organic acid and a filler. Also disclosed are compositions including ethylene and/or α-olefin/vinyl or vinylidene interpolymers, an organic acid, various processing agents, coupling agents and a filler. The compositions disclosed herein are particularly useful in sound management applications, or as insulators.

COMPOSITIONS OF INTERPOLYMERS OF α-OLEFIN MONOMERS WITH ONE OR MORE VINYL OR VINYLIDENE AROMATIC MONOMERS AND/OR ONE OR MORE HINDERED ALIPHATIC OR CYCLOALIPHATIC VINYL OR VINYLIDENE MONOMERS BLENDED WITH A CONDUCTIVE ADDITIVE

A blend of polymeric materials comprising (A) of from about 1 to about 99.99 weight percent based on the combined weights of Components A, B and C of at least one substantially random interpolymer; and wherein said interpolymer; (1) contains of from about 0.5 to about 65 mole percent of polymer units derived from; (a) at least one vinyl or vinylidene aromatic monomer, or (b) at least one hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer, or (c) a combination of at least one vinyl or vinylidene aromatic monomer and at least one hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer; (2) contains of from about 35 to about 99.5 mole percent of polymer units derived from at least one aliphatic α-olefin having from 2 to 20 carbon atoms; (3) has a molecular weight (Mn) greater than about 1,000; (4) has a melt index (I 2 ) of from about 0.01 to about 1,000; (5) has a molecular weight distribution (M w /M n ) of from about 1.5 to about 20; and (B) of from about 99 to about 0.01 weight percent based on the combined weights of Components A, B, and C of one or more conductive additives and/or one or more additives with high magnetic permeability ; and (C) of from 0 to about 98.99 weight percent based on the combined weights of Components A, B, and C of one or more polymers other than A.

Structures and fabricated articles having shape memory made from alpha-olefin/vinyl or vinylidene aromatic and/or hindered aliphatic vinyl or vinylidene interpolymers.

Thermoplastic compositions of interpolymers of alpha-olefin monomers with one or more vinyl or vinylidene aromatic monomers and/or one or more hindered aliphatic or cycloaliphaticvinyl or vinylidene monomers blended with engineering thermoplastics

The present invention relates to a blend of polymeric materials comprising: (A) of from 1 to 80 percent by weight (based on the combined weights of Components A and B) of at least one substantially random interpolymer; wherein said interpolymer; (1) contains of from 0.5 to 50 mole percent of polymer units derived from; (a) at least one vinyl or vinylidene aromatic monomer, or (b) at least one hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer, or (c) a combination of at least one vinyl or vinylidene aromatic monomer and at least one hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer; (2) contains of from 50 to 99.5 mole percent of polymer units derived from at least one aliphatic .alpha.-olefin having from 2 to 20 carbon atoms; (3) has a melt index (I2) of from 0.01 to 100 g/10 min; and (4) has a molecular weight distribution (Mw/Mn) of from 1.5 to 20; (B) of from 20 to 99 weight percent based on the combined weights of Components A and B of one or more engineering thermoplastics.

Open-cell foam and method of making

HEAT RESISTANT ARTICLE, CONFIGURED, IRRADIATED AND RETICULATED, FREE FROM A SILANAN RETICULATION AGENT

Se trata de un interpolímero de etileno resistente, configurado, curado, irradiado o degradado por union intermolecular (crosslinked) y un artículoelástico resistente al calor que comprenden por lo menos un interpolímero de etileno y un método parap reparar dicho artículo elástico. En particular, lapresente se refiere a un artículo configurado (por ejemplo, película o fibra) caracterizado por la mejorada elasticidad a elevadas temperaturas y que comprendeun polímero de etileno sustancialmentecu rado, irradiado o degradado por union intermolecular y ramificado en forma homogénea. El artículo elástico de lapresente es particularmente adecuado para uso en aplicaciones en donde debe mantenerse la buena elasticidad a temperaturas elevadas,tal c omo, por ejemplo,artículos para la higiene personal y prendas de control de infeccion descartables a temperaturas del cuerpo de alrededor de 38*C. El interpolímero de etilenoresistente al calor, configurado, curado, irradiado o degradadocomprende et ileno interpolimerizado con por lo menos otro monomero y se caracteriza por tener(a) una densidad de polímero de menos de 0,89 g/cm3 o una cristalinidad DSC a 23*C, segun se determina utilizando calorimetría de exploracion diferencial,demenos del 26 % antes de ser configurado, curado, irradiado o degradado y (b) en forma de fibra hilada por fusion (meltspun), un valor de menos de 0,75 para laexpresion: Abs[deltaE/E0] + Abs[deltaT/T0]. En donde deltaE y deltaT se toman de ungráfico de fatiga-ten sion, segun se determina utilizando un tensiometroInstron a 500 mm/minuto de velocidad de cruceta y 10,2 cm de longitud de calibre y del promedio de cuatro repetaciones de cinco muestras de fibras; deltaE setoma como ladiferencia en porcentaje de el ongacion entre el polímero curado, irradiado o degradado y el interpolímero sin curar, irradiar o degradar a unatenacidad de 0,4 gramos/denier; E0 se toma como el porcentaje de elongacion del interpolímero no curado,no irradiado o no degradado a una ...

Crosslinked elastic fibers

Elastic fibers are described that comprise (i) a polyolefin polymer, e.g., a homogeneously branched, preferably substantially linear, ethylene polymer, and (ii) a photoinitiator, e.g., an aromatic ketone, in an amount sufficient to effect at least a partial cross-linking of the polymer when the fiber is exposed to sufficient UV-radiation to activate the photoinitiator. Articles, e.g., fabrics, comprising fibers of this invention, either alone or in combination with one or more other fibers, e.g., cellulose, nylon, etc., exhibit good heat resistance and elasticity at elevated temperatures.

Foams having increased heat distortion temperature made from blends of alkenyl aromatic polymers and alpha-olefin/vinyl or vinylidene aromatic and/or sterically hindered aliphatic or cycloaliphatic vinyl or vinylidene interpolymers

The present invention pertains to improved alkenyl aromatic polymer foams (and processes for their preparation) having increased heat distortion temperature and improved dimensional stability while maintaining good tensile/tear, creep and environmental dimensional change properties. The closed cell low density alkenyl aromatic polymer foams exhibit increased heat distortion temperature, when substantially random interpolymers of about 21 to about 65 mol % styrene are blended in. When these same alkenyl aromatic polymer foams are made without these interpolymers, the heat distortion temperature is not improved.

Soft and flexible foams made from blends of alkenyl aromatic polymers and alpha-olefin/vinyl or vinylidene aromatic and/or sterically hindered aliphatic or cycloaliphatic vinyl or vinylidene interpolymers

A soft foam having an Asker C hardness of less than about 65, comprising; (A) from about 30 to about 70 percent by weight (based on the combined weight of Components A and B) of one or more alkenyl aromatic polymers and wherein at least one of said alkenyl aromatic polymers has a molecular weight (M w ) of from about 100,000 to about 500,000; and (B) from about 30 to about 70 percent by weight (based on the combined weight of Components A and B) of one or more substantially random interpolymers having an I 2 of about 0.1 to about 50 g/10 min, an M w /M n of about 1.5 to about 20; comprising (1) from about 8 to about 45 mol % of polymer units derived from; (a) at least one vinyl or vinylidene aromatic monomer, or (b) at least one hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer, or (c) a combination of at least one aromatic vinyl or vinylidene monomer and at least one hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer, and (2) from about 55 to about 92 mol % of polymer units derived from at least one of ethylene and/or a C 3-20 α-olefin; and (3) from 0 to about 20 mol % of polymer units derived from one or more of ethylenically unsaturated polymerizable monomers other than those derived from (1) and (2); and (C) optionally, one or more nucleating agents; and (D) optionally, one or more other additives; and (E) one or more blowing agents present in a total amount of from about 0.4 to about 5.0 gram-moles per kilogram (based on the combined weight of Components A and B).

Acoustical insulation foams

An acoustical insulation foam having, either with or without elastification, an Asker C hardness of less than about 65, a density of about 5 to about 150 kg/m3, a cell size of about 0.05 to about 15 mm, an open cell content of 0 to about 100 volume percent, a thickness of about 1 to about 200 mm, and a width of about 100 to about 3000 mm; comprising; (A) one or more alkenyl aromatic polymers, (B) one or more substantially random interpolymers and (C) optionally, one or more nucleating agents and (D) optionally, one or more other additives; and (E) one or more blowing agents.

Thermoplastic compositions for durable goods applications

Thermoplastic compositions have been discovered which are suitable for rotational molding. The compositions have improved processability and/or improved physical and mechanical properties. The compositions advantageously often exhibit one or more of the following: reduced low shear viscosity, reduced melt elasticity at low shear rate, reduced cycle times, improved sintering and a wide range of processing temperatures, improved low temperature and/or room temperature impact, good environmental stress crack resistance, acceptable heat distortion temperature, and acceptable flexural and secant modulus.

Free-flowing polymer composition

The present invention relates to substantially free-flowing polymer particles. The polymer particles are those which have a one millimeter penetration temperature of less than about 75° C. as determined by thermal mechanical analysis or an unconfined yield strength of greater than about 15 pounds per square foot (73 kilograms per square meter). The composition also comprises an effective amount of an anti-blocking agent in the presence or absence of a binding agent.

Thermoformable ethylene/styrene interpolymer-based polymer blend film for three-dimensional transfer finish foil

Thermoformable films that contain a blend and/or composite structure containing an ethylene/vinyl or vinylidene aromatic polymer or an alpha-olefin/vinyl or vinylidene aromatic polymer, such as an ethylene/styrene interpolymer, a vinyl or vinylidene aromatic homo- or copolymer, such as polystyrene, and, optionally, an alpha-olefin homo- or copolymer serve as effective carrier layers for heat transfer foils.

Olefin polymer and α-olefin/vinyl or α-olefin/vinylidene interpolymer blend foams

A polymer blend foam having smooth skin and/or an open-cell content of at least 20 volume percent, a crosslinked gel content of no greater than 10 percent, a minimum cross-sectional area of at least 1000 mm 2 , and a density of no greater than 250 kg/m 3 . The blend includes (A) a substantially random interpolymer having polymerized therein (1) a vinyl or vinylidene aromatic monomer and/or a sterically hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer, and (2) one or more of ethylene and a C 3-20 aliphatic α-olefin; and (B) an olefin polymer based on one or more of ethylene, C 3-20 aliphatic α-olefins, and C 3-20 aliphatic α-olefins containing polar groups. The olefin polymer (B) lacks any of the vinyl or vinylidene aromatic monomers found in (A).

Foam compositions from blend of alkenyl aromatic polymers and alpha-olefin/vinylor vinylidene aromatic interpolymers

COMPATIBILIZED BLENDS OF ALKENYL AROMATIC POLYMERS, α-OLEFIN/VINYL OR VINYLIDENE AROMATIC AND/OR STERICALLY HINDERED ALIPHATIC OR CYCLOALIPHATIC VINYL OR VINYLIDENE INTERPOLYMERS AND STYRENIC BLOCK COPOLYMERS

A blend composition (and fabricated articles therefrom) comprising; (A) one or more alkenyl aromatic polymers; (B) one or more substantially random interpolymers comprising (1) polymer units derived from; (a) at least one vinyl or vinylidene aromatic monomer, or (b) at least one hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer, or (c) a combination of at least one aromatic vinyl or vinylidene monomer and at least one hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer, and (2) polymer units derived from at least one of ethylene and/or a C 3-20 α-olefin; and (3) polymer units derived from one or more of ethylenically unsaturated polymerizable monomers other than those derived from (1) and (2); and, (C) one or more compatibilizers; and wherein said blend has; a) a tensile strength greater than 1500 psi; b) a pull force test (⅛″ diameter) greater than 15 lb; c) a Shore A Hardness greater than 79; d) a cycle time in injection molding of less than 30 sec.

Fabricated articles prepared from blends of substantially random ethylene/propylene/vinyl aromatic interpolymers with polypropylene

This invention relates to fabricated articles, including films or sheets prepared from blends of substantially random ethylene/propylene/vinyl aromatic monomer interpolymers with propylene homopolymers or copolymers. The fabricated articles exhibit high toughness, tensile properties and heat resistance and low stress whitening, and further can exhibit desirable optical properties, especially when in the form of a film or sheet.

Blends of substantially random interpolymers with enhanced thermal performance

The present invention pertains to immiscible blends of two or more α-olefin/vinyl aromatic monomer interpolymers, the blend having at least one interpolymer component which comprises 2 to 7 mole percent vinyl aromatic monomer content, and uses for such blends. The blend components are selected to provide superior processability and/or performance, such as upper use temperature, in the blend compositions and in their end use applications.

Crosslinked compositions and articles prepared therefrom

POLYMERIC COMPOSITIONS

Constrained geometry addition polymerization catalysts, processes for their preparation, precursors therefor, methods of use, and novel polymers formed therewith

Hafnium or zirconium coordination complexes comprise a cyclopentadienyl or substituted cyclopentadienyl group forming part of a ring structure in which the metal is both bonded to an adjacent amidosilane moiety and held in association with the (substituted) cyclopentadienyl moiety. These complexes form addition polymerization catalysts with activating cocatalysts such as Lewis acids, ammonium salts, oxidizing agents and, especially, aluminum compounds, particularly aluminum trialkyls. Novel polymers, including ElPE resins and pseudo-random copolymers, can be obtained using the catalysts.

Polymers obtainable with a constrained geometry addition polymerization catalyst and process of making atactic alpha-olefin polymers with such catalysts

One or more addition polymerizable monomers are polymerized by catalysts comprising a metal monocyclopentadienyl coordination complex and an activating cocatalyst to form novel polymers, including atactic amorphous poly(alpha-olefins), elastic polyethylenes and pseudo-random copolymers.

Constrained geometry addition polymerization catalysts, processes for their preparation, precursors therefor, methods of use, and novel polymers formed therewith

Laminate

Cable and composition

A cable comprising one or more conductors surrounded by at least an inner semiconductive layer, an insulation layer and an outer semiconductive layer, in that order, wherein the insulation layer is not crosslinked and comprises at least 90 wt% of a polymer composition, said polymer composition comprising: (I) 85.0 to 99.5 wt% of an LDPE; and (II) 0.5 to 15.0 wt% of an HDPE having a density of at least 940 kg/m 3 or 1.5 to 15.0 wt% of an ultra-high molecular weight polyethylene having a Mw of at least 1,000,000.

Cable with improved electrical properties

A cable comprising a conductor surrounded by at least an inner semiconductive layer, an insulation layer and an outer semiconductive layer, in that order, wherein the insulation layer is not crosslinked or is cross-linked and comprises at least 90 wt% of a polymer composition, said polymer composition comprising: (I) 95.5 to 99.9 wt% of an LDPE; and (II) 0.1 to 4.5 wt% of an HDPE having a density of at least 940 kg/m 3 .

Open-cell foam and method of making

An open-cell polystyrene foam is provided which is formed from a blend of polystyrene and an ethylene-styrene interpolymer. The ethylene-styrene interpolymer functions as a cell opening agent, and is used to control the open cell content of the resulting foam, which may contain greater than 80 percent open cells. The foam is produced by an extrusion process in which carbon dioxide is used as the preferred blowing agent. The resulting foams may be formed into beads, plank, round, sheets, etc.

Structures and fabricated articles having shape memory made from α-olefin/vinyl or vinylidene aromatic and/or hindered aliphatic vinyl or vinylidene interpolymers

The present invention pertains to structures and fabricated articles having shape/reshape behavior (and processes for their preparation) comprising; (A) from about 1 to 100 wt % (based on the combined weights of Components A and B) of at least one substantially random interpolymer having an I 2 of 0.1 to about 1,000 g/10 min and an M w /M n of from about 1.5 to about 20, which comprises; (1) from about 38 to about 65 mol % of polymer units derived from; (a) at least one vinyl or vinylidene aromatic monomer, or (b) at least one hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer, or (c) a combination of at least one aromatic vinyl or vinylidene monomer and at least one hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer, and (2) from about 35 to about 62 mol % of polymer units derived from ethylene and/or at least one C 3-20 α-olefin; and (B) from 0 to about 99 wt % (based on the combined weights of Components A and B) of at least one polymer other than that of Component A; and (C) from 0 to about 50 % by weight (based on the combined weights of components A, B, C and D) of at least one tackifier; and (D) from 0 to about 80% by weight (based on the combined weights of components A, B, C and D) of at least one filler.

Blends of α-olefin/vinylidene aromatic monomer or hindered aliphatic vinylidene monomer interpolymers with polyolefins

A fabricated article other than a film comprising a thermoplastic blend prepared from polymeric materials consisting of; (A) from 1 to 99 weight percent of at least one interpolymer made from monomer components comprising (1) from 0.5 to 65 mole percent of (a) at least one aromatic vinylidene monomer, or (b) at least one hindered aliphatic or cycloaliphatic vinylidene monomer, or (c) a combination of at least one aromatic vinylidene monomer and at least one hindered aliphatic or cycloaliphatic vinylidene monomer, and (2) from 99.5 to 35 mole percent of at least one aliphatic α-olefin having from 2 to 20 carbon atoms; and (B) from 99 to 1 weight percent of at least one polymer made from monomer components comprising at least one α-olefin having from 2 to 20 carbon atoms. These articles possess improved properties when compared to the properties of articles derived from the individual polymers comprising the blend. These articles are useful in the preparation of injection molded parts, bitumen and asphalt modification, hot melt and pressure sensitive adhesive systems.

Thermoplastic compositions of interpolymers of alpha-olefin monomers with one or more vinyl or vinylidene aromatic monomers and/or one or more hindered aliphatic or cycloaliphatic vinyl or vinylidene monomers blended with engineering thermoplastics

The present invention relates to a blend of polymeric materials comprising; (A) of from about 1 to about 80 percent by weight (based on the combined weights of Components A and B) of at least one substantially random interpolymer; wherein said interpolymer; (1) contains of from about 0.5 to about 50 mole percent of polymer units derived from; a) at least one vinyl or vinylidene aromatic monomer, or b) at least one hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer, or c) a combination of at least one vinyl or vinylidene aromatic monomer and at least one hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer; (2) contains of from about 50 to about 99.5 mole percent of polymer units derived from at least one aliphatic α-olefin having from 2 to 20 carbon atoms; (3) has a melt index (I 2 ) of from about 0.01 to about 100 g/10 min; and (4) has a molecular weight distribution (M w /M n ) of from about 1.5 to about 20; (B) of from about 20 to about 99 weight percent based on the combined weights of Components A, and B of one or more engineering thermoplastics.

Compositions comprising a substantially random interpolymer of at least one α-olefin and at least one vinylidene aromatic monomer or hindered aliphatic vinylidene monomer

Disclosed are compositions comprising at least one substantially random interpolymer of ethylene and a vinylidene aromatic monomer or a hindered aliphatic vinylidene monomer and optionally at least one C 3 -C 20 α-olefin monomer, and at least one tackifier. The claimed compositions are useful in adhesives, such as are employed in various applications, such as in packaging and carton sealing, bookbinding, masking tape, clear office tape, labels, decals, bandages, decorative and protective sheets (such as shelf and drawer liners), floor tiles, sanitary napkin/incontinence device placement strips, sun control films, and the joining of gaskets to automobile windows. The claimed compositions further find use in a variety of applications, such as sealants, coatings, molded articles, and multilayered structures.

Acoustical insulation foams

An acoustical insulation foam having, either with or without elastification, an Asker C hardness of less than about 65, a density of about 5 to about 150 kg/m3, a cell size of about 0.05 to about 15 mm, an open cell content of 0 to about 100 volume percent, a thickness of about 1 to about 200 mm, and a width of about 100 to about 3000 mm; comprising; (A) one or more alkenyl aromatic polymers, (B) one or more substantially random interpolymers and (C) optionally, one or more nucleating agents and (D) optionally, one or more other additives; and (E) one or more blowing agents.

Thermoformable ethylene/styrene interpolymer-based polymer blend film for three-dimensional transfer finish foil

Thermoformable films that contain a blend and/or composite structure containing an ethylene/vinyl or vinylidene aromatic polymer or an alpha-olefin/vinyl or vinylidene aromatic polymer, such as an ethylene/styrene interpolymer, a vinyl or vinylidene aromatic homo- or copolymer, such as polystyrene, and, optionally, an alpha-olefin homo- or copolymer serve as effective carrier layers for heat transfer foils.