ЭЛАСТИЧНАЯ ПЛЕНКА, СОДЕРЖАЩАЯ ВОЗОБНОВЛЯЕМЫЙ ПОЛИМЕР КРАХМАЛА

Изобретение относится к пленке, которую применяют в составе разнообразных одноразовых изделий, например подгузников, гигиенических салфеток, одежды для взрослых, страдающих недержанием, перевязочного материала и т.д. Эластичная пленка, включающая термопластическую композицию, где термопластическая композиция включает по меньшей мере один полимер крахмала, составляющий от приблизительно 1 мас.% до приблизительно 30 мас.% от содержания полимеров в пленке, по меньшей мере один эластомерный полимер, составляющий от приблизительно 30 мас.% до приблизительно 95 мас.% от содержания полимеров в пленке и по меньшей мере один пластификатор, составляющий от приблизительно 0,1 мас.% до приблизительно 30 мас.% от массы пленки, причем массовое отношение количества эластомерных полимеров к количеству полимеров крахмала в пленке составляет от приблизительно 1 до приблизительно 10 и удлинение эластичной пленки как в машинном направлении, так и в поперечном направлении составляет приблизительно 250 % или ...

КОМПОЗИЦИЯ ПРОПИЛЕНОВОЙ СМОЛЫ И ЕЁ ПРИМЕНЕНИЕ

Изобретение относится к композиции пропиленовой смолы, предназначенной для получения формованных изделий, в частности для внутренней отделки салона автомобиля. Композиция содержит пропиленовый полимер (А), имеющий скорость течения расплава 20-300 г/10 мин, этилен α-олефин диеновый сополимер (В-1), имеющий скорость течения расплава менее 0,4 г/10 мин, этилен α-олефиновый сополимер (В-2), имеющий скорость течения расплава от 0,5 г/10 мин до менее 10 г/10 мин, неорганический наполнитель (С), модифицированный полипропилен (D), модификатор поверхности (Е) и пигмент (F). Причем модифицированный полипропилен (D) представляет собой полипропилен, модифицированный ангидридом жирной кислоты, модификатор поверхности (E) представляет собой одну или несколько групп, состоящих из амидов жирных кислот и моноглицеридов. Композиция пропиленовой смолы по изобретению позволяет изготавливать формованные изделия, обладающие превосходными механическими свойствами и стойкостью к царапанию. 4 н. и 10 з.п. ф-лы, ...

МУЛЬТИМОДАЛЬНЫЙ ПОЛИМЕР

Изобретение относится к сшитому полиэтилену, к способу получения сшитого полиэтилена, также к сшитому полиэтилену и изделиям, предпочтительно трубам, изготовленным из него. Сшитый полиэтилен включает мультимодальный этиленовый полимер с плотностью менее 950 кг/м, полученный полимеризацией в присутствии катализатора с одним активным центром и имеющий CTPот 2 до 15 г/10 мин и показатель снижения вязкости при сдвиге ПСВот 5 до 10. Технический результат - обеспечение полимерной композиции с улучшенной способностью к сшиванию, например со степенью сшивания по меньшей мере 70%, гибкостью и с хорошей обрабатываемостью. 5 н. и 9 з.п. ф-лы, 3 табл., 1 пр.

ПОЛИЭТИЛЕНОВАЯ ЛИТЬЕВАЯ КОМПОЗИЦИЯ ДЛЯ ПОЛУЧЕНИЯ ПЛЕНОК ЭКСТРУЗИЕЙ С РАЗДУВОМ, ИМЕЮЩИХ УЛУЧШЕННЫЕ МЕХАНИЧЕСКИЕ СВОЙСТВА

... 1. Полиэтиленовая литьевая композиция, имеющая мультимодальное молекулярно-массовое распределение, плотность при температуре 23°C, измеренную в соответствии с ISO 1183, в интервале от 0,940 до 0,948 г/см3 и MFR190/5, измеренную в соответствии с ISO 1133, конечного продукта после экструзии в интервале от 0,10 до 0,50 дг/мин, указанная полиэтиленовая литьевая композиция содержит ! от 40 до 60 мас.% первой фракции полимера этилена, выполненной из гомополимера А, имеющего первую молекулярную массу, ! от 25 до 45 мас.% второй фракции полимера этилена, выполненной из первого сополимера В этилена и по меньшей мере одного первого сомономера из группы олефинов, имеющих от 4 до 8 углеродных атомов, причем указанный первый сополимер В имеет вторую молекулярную массу, более высокую, чем указанная первая молекулярная масса гомополимера А, и ! от 10 до 30 мас.% третьей фракции полимера этилена, выполненной из второго сополимера С этилена и по меньшей мере одного второго сомономера, причем указанный второй ...

ВОДНЫЕ ДИСПЕРСИИ ПОЛИОЛЕФИНОВ ДЛЯ ПРОПИТЫВАНИЯ ТЕКСТИЛЯ

... 1. Изделие, полученное по способу, включающему ! пропитывание волокнистой структуры составом, включающим водную дисперсию, где водная дисперсия содержит: ! (а) по меньшей мере, один полимер, выбираемый из группы, состоящей из термопластичного полимера на основе этилена, термопластичного полимера на основе пропилена и их смесей, и, по меньшей мере, один упомянутый полимер составляет от 35 до 55 об.% от водной дисперсии; ! (b) по меньшей мере, один полимерный стабилизатор и ! (с) воду; и ! удаление из пропитанной волокнистой структуры, по меньшей мере, части воды. ! 2. Изделие по п.1, где полимером на основе этилена является интерполимер этилена-альфа-олефина. ! 3. Изделие по п.1, где полимером на основе пропилена является интерполимер пропилена-альфа-олефина. ! 4. Изделие по п.1, где состав дополнительно содержит, по меньшей мере, один наполнитель, где наполнитель составляет от более чем 0 до приблизительно 200 частей на 100 частей объединенного количества, по меньшей мере, одного полимера ...

ADHESIVE WITH IMPROVED TRANSPARENCY FOR COEXTRUDIERTE BARRIER FILMS

ELASTOMERS COMPOSITIONS WITH INCREASED CONSTRICTION RESISTANCE FOR HIGH-SPEED APPLICATIONS OF SHEET METAL EXTRUSION

MULTIMODALE POLYETHYLENE MOLDING MATERIAL FOR THE PRODUCTION OF PIPES WITH IMPROVED MECHANICAL CHARACTERISTICS

INTERLACED POLYETHYLENE WITH OUTSTANDING INHIBITION OF SCHWEISSAUSTRITTSUND DAMMING CHARACTERISTICS

THERMOPLASTIC VULKANISAT WITH INTERCPOLYMERS OF ETHYL OLEFINEN

THERMOPLASTIC MOLDING MATERIALS WITH HIGH RIGIDITY

POLYETHYLENE MOLDING MATERIAL FOR THE PRODUCTION OF BLASFOLIEN WITH IMPROVED MECHANICAL CHARACTERISTICS

LATENT HEAT STORAGE MATERIALS (PCM) FOR THERMAL MANAGEMENT

PIPE FROM POLYETHYLENE WITH IMPROVED MECHANICAL CHARACTERISTICS

Recycled plastic composition

A method of producing a settable, strong, rigid, durable and machinable composition including plastics and organic fibres comprising the steps of: (a) forming a polyolefin source of plastic into a particle size of about 2mm to 10mm in diameter; (b) forming a polystyrene source of plastic into a particle size of about 2mm to 10mm in a diameter; (c) forming a natural organic fibre source into fibres in a size range between 0.2mm and 5mm. (d) mixing the above in a ratio of between 70 % to 20 % by weight of a), 60 % to 20 % by weight of b), and 50 % to 10 % by weight of c) to form a combination until said combination is substantially mixed; (e) drying the combination of step d) at a temperature of up to 135 °C until said mixture is stable dry; and (f) mixing and drying the combination of step e) by thermal and/or mechanical means to achieve a moisture content of below 1 % for the combination.

Multimodal polyethylene compositions and pipes made from the same multimodal polyethylene composition

Methods, compositions and blends for forming articles having improved environmental street crack resistance

Polyethylene molding composition for producing blown films having improved mechanical properties

Compositions comprising thermoplastic starch

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

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

METHOD FOR PRODUCING ELECTROSTATICALLY NON-CHARGEABLE AND/OR ELECTRIC CHARGE-DRAINING PLASTIC CONTAINERS AND A PLASTIC CONTAINER PRODUCED ACCORDING TO THE METHOD

... ²The invention relates to a method for producing multi-layered containers from ²a ²thermoplastic material (10), said containers being used to store and transport ²²liquid fillers, especially combustible or explosive fillers, and a plastic ²container ²produced using said method. The inventive containers are provided with a thin, ²²permanently electrostatically non-chargeable or electric charge-draining outer ²²layer. According to the invention, the permanently electrostatically ²non-chargeable or electric charge-draining properties of the outer layer are ²created by ²adding a defined quantity of a specific compound based on a polymer to the ²base ²plastic material of the outer layer and incorporating the same into the ²plastic ²material, and the outer layer is thin so that the transparency or translucency ²of ²the compounded outer layer is either not affected, or only slightly affected, ²such ²that the filling level of a liquid poured into the container remains optically ²²identifiable without ...

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%.

PREPARATION OF MULTIMODAL POLYETHYLENE

Disclosed is a polyethylene composition. The composition comprises single-site multimodal resin A and single-site multimodal resin B, wherein resin A differs from resin B in molecular weight, in monomeric composition, in density, in long chain branch concentration or distribution, or in combinations thereof. Disclosed is also a method for making the polyethylene composition. The method comprises polymerizing, in the presence of two or more single-site catalysts, ethylene or its mixture with a C3-C10 .alpha.-olefin to form a first multimodal resin and continuing the polymerization in the presence of the same catalysts but in a different hydrogen concentration, in a different monomer composition, or at a different temperature to form a second multimodal resin.

POLYOLEFIN BLENDS AND PIPE

A polyolefin blend comprising: (a) from 30 to 80 weight % of a low molecular weight copolymer comprising from 85 to 100 weight % of ethylene and from 15 to 0 weight % of one or more C4-8 alpha olefins having a density from 0.953 to 0.965 g/cm3 and a melt flow rate (2.16 kg 190.degree.C) from 0.1 to 20.0 g/10 minutes; and~ (b) from 70 to 20 weight % of a high molecular weight copolymer comprising from 85 to 99.9 weight % of ethylene and from 15 to 0.1 weight of one or more C4-8 alpha olefins having a density from 0.915 to 0.940 g/cm3 and a melt flow rate (21.6 kg 190.degree.C) from 0.05 to 5.0 g/10 minutes, said copolymer being prepared with a single site catalyst is useful in the preparation of pipe.

BIMODAL POLYETHYLENE COMPOSITION AND ARTICLES MADE THEREFROM

The invention relates to a polyethylene composition with a bimodal molecular weight distribution and articles made therefrom, such as high topload blow moldings and transmission and distribution pipes. The composition comprises a low-molecular-weight (LMW) ethylene homopolymer component and a homogeneous, high-molecular-weight (HMW) ethylene interpolymer component, wherein the LMW component is characterized as having a molecular weight distribution, MWD L, of less than about 8. The composition is characterized as having a bimodal molecular weight distribution, and a ductile-brittle transition temperature, Tdb, of less than -20 ~C. In some embodiments, the HMW component is characterized by a reverse comonomer distribution.

NOVEL MEDIUM DENSITY POLYETHYLENE COMPOSITIONS

An ethylene alpha-olefin copolymer having (a) a density of from about 0.910 g/cc to about 0.940 g/cc; (b) a weight average molecular weight of from about 150,000 g/mol to about 300,000 g/mol; and (c) a melt index at a load of 2.16 kg of from about 0.01 dg/10 min. to about 0.5 dg/min.; wherein a 1 mil blown film formed from the polymer composition is characterized by (i) a Dart Impact strength greater than about 175 g/mil; (ii) an Elmendorf machine direction tear strength greater than about 20 g/mil; and (iii) an Elmendorf transverse direction tear strength greater than about 475 g/mil.

PIPE OF POLYETHYLENE HAVING IMPROVED MECHANICAL PROPERTIES

The invention relates to a high strength pipe of ethylene polymer having a bimodal molecular weight distribution. Such pipe has a stress cracking resistance of mJ/mm2 and a modulus of creep in flexure, measured according to DIN 54852-Z4, of according to the invention is produced from an ethylene polymer in which the ratio of weight of the low molecular weight fraction to the weight of the higher molecular weight fraction is in the range from 0.5 to 2.0 and which has a melt flow index MFI5/190 .degree.C of g/10 min. It is particularly suitable for the transportation of gases and water.

НАПОРНАЯ ТРУБА ИЗ ЛИНЕЙНОГО ПОЛИЭТИЛЕНА НИЗКОЙ ПЛОТНОСТИ (ЛПЭНП)

Настоящее изобретение относится к композиции мультимодального линейного полиэтилена низкой плотности, подходящей для изготовления напорной трубы. Кроме того, изобретение относится к напорной трубе, содержащей упомянутую композицию, способу изготовления трубы, полученной из композиции, и к способу отправления на рецикл материала трубы, состоящего из композиции, соответствующей изобретению. Кроме того, изобретение относится к применению напорной трубы в качестве трубы для орошения, в особенности трубы для капельного орошения.

METHOD OF PREPARING THE COMPOSITION, INCLUDING HETEROPHASE COPOLYMER PROPYLENE AND TALC

НАПОРНАЯ ТРУБА ИЗ ЛИНЕЙНОГО ПОЛИЭТИЛЕНА НИЗКОЙ ПЛОТНОСТИ (ЛПЭНП)

Настоящее изобретение относится к композиции мультимодального линейного полиэтилена низкой плотности, подходящей для изготовления напорной трубы. Кроме того, изобретение относится к напорной трубе, содержащей упомянутую композицию, способу изготовления трубы, полученной из композиции, и к способу отправления на рецикл материала трубы, состоящего из композиции, соответствующей изобретению. Кроме того, изобретение относится к применению напорной трубы в качестве трубы для орошения, в особенности трубы для капельного орошения.

METHOD OF PREPARING THE COMPOSITION, CONTAINING HETEROPHASE COPOLYMER PROPYLENE AND TALC

METHOD OF PREPARING THE COMPOSITION, CONTAINING HETEROPHASE PROPYLENE COPOLYMER AND TALC

METALLOCENE-CATALYZED POLYETHYLENE

Polyolefin blend composition

THERMOPLASTIC COMPOSITION OF COEXTRUSION TIE VERSATILE AND MULTILAYER STRUCTURE INCORPORATING THIS COMPOSITION

L'invention a pour objet une composition thermoplastique transparente de scellage, consistant en un mélange de deux composants : - le premier composant, présent à hauteur de 70% à 90% en masse dudit mélange, consistant en un ou plusieurs copolymères d'éthylène et d'acétate de vinyle représentant entre 15% et 40% en masse d'acétate de vinyle et présentant un indice de fluidité (MFI) compris entre 1 et 35 g/1 0min (190°C, 2,16kg, ASTM D 1238), et - le second composant, présent à hauteur de 10% à 30% en masse dudit mélange, consistant en un ou plusieurs terpolymères d'éthylène - d'acrylate d'éthyle/méthyle ou d'acétate de vinyle - d'anhydride maléique. L'invention également pour objet une structure multicouche comprenant, en couche centrale, une couche comprenant la susdite composition.

WELDED SEWER PIPE REINFORCED BY REINFORCING TUBE, AND TUBE FOR REINFORCING WELDED SEWER PIPE

The present invention relates to a welded sewer pipe reinforced by a reinforcing tube, and a tube for reinforcing the welded sewer pipe. According to the present invention, in the welded sewer pipe, an external surface of a sewer pipe (10) is reinforced by a welding connection band (100), and an internal surface of the sewer pipe (10) is reinforced by a reinforcing tube (1). The welding connection band (100) comprises an elastic band (110), a support sheet (120), and a welding sheet (130). Therefore, a repair state of the sewer pipe can be maintained for a long period of time with impregnated tube construction of a double reinforcing structure. COPYRIGHT KIPO 2017 ...

HOT MELT ADHESIVE COMPOSITION

To provide a hot melt adhesive composition which has significantly reduced stringing and is superior in thermal stability and clarity. A hot melt adhesive composition contains a first component comprising at least one ethylene/C3-C20 E-olefin copolymer; a second component comprising at least one ethylene/(meth)acrylic acid ester copolymer in an amount of 6 to 12 parts by weight per 100 parts by weight of the first component; and a third component compring at least one tackifying resin, in an amount of 50 to 200 parts by weight per 100 parts by weight of the first component, the third component being compatible with the first and second components. © KIPO & WIPO 2008 ...

SOFT POLYOLEFIN COMPOSITIONS WITH IMPROVED PROCESSABILITY

Soft polyolefin composition with improved processability comprising from 8 to 45% by weight of a polypropylene component, from 82 to 45% by weight of an elastomeric component, and from 10 to 25% by weight of a viscosity reducing agent comprising polybutene-1 and paraffinic wax or grease. The composition is easily processable also by injection moulding and has better tensile properties than compositions in which processability is improved by visbreaking. COPYRIGHT KIPO & WIPO 2010 ...

광발전 모듈의 봉합재

... 본 발명은 하기를 포함하는 광발전 전지 (10) 를 코팅하는 것으로 의도되는 광발전 모듈 (20) 의 봉합재 (22) 로서: - 에틸렌 - 알킬 아크릴레이트 코폴리머 (상기 코폴리머의 용융 유동 지수 (MFI) 는 1 g/10 min 내지 40 g/10 min 임); 및 - 실란 (상기 조성물의 중량의 0.1% 내지 0.5% 를 구성함); 상기 봉합재가 또한 조성물의 중량의 0.1% 내지 0.5% 를 구성하는 가교제를 포함하고, 상기 코폴리머가 상기 조성물의 중량의 99% 이상을 구성하는 것을 특징으로 하는 것에 관한 것이다. 본 발명은 또한 광발전 모듈에서의 상기 봉합재의 용도, 뿐만 아니라 상기 봉합재를 포함하는 광발전 모듈에 관한 것이다.

ETHYLENE/1-HEXENE OR ETHYLENE/1-BUTENE COPOLYMER HAVING EXCELLENT PROCESSIBILITY AND ENVIRONMENTAL STRESS CRACK RESISTANCE

The present invention relates to an ethylene/1-hexene or ethylene/1-butene copolymer having excellent processibility. The ethylene/1-hexene or ethylene/1-butene copolymer according to the present invention has excellent processibility by having high molecular weight and wide molecular weight distribution, and can be applied to a heating tube with high internal pressure, a mining pipe or a large diameter pipe by means of excellent environmental stress crack resistance. The ethylene/1-hexene or ethylene/1-butene copolymer has weight average molecular weight (g/mol) of 10,000 to 400,000, molecular weight distribution (Mw/Mn, PDI) of 2 to 30, and environmental stress crack resistance (ESCR) of 400 to 20,000 hours, wherein the environmental stress crack is measured by a full notch creep test at 4.0 MPa and 80°C according to ISO 16770. COPYRIGHT KIPO 2016 (AA) Comparative example 1-1 (BB) Comparative example 1-2 (CC) Example 1-1 (DD) Example 1-2 (EE) Example 1-3 (FF) Region for influencing FNCT ...

SOLAR CELL SEALING MATERIAL AND SOLAR CELL MODULE PRODUCED BY USING SAME

composição polimérica para uso em condutores revestidos e condutor revestido

BREATHABLE FILMS AND ARTICLES INCORPORATING SAME

Se proporcionan películas respirables formadas a partir de polietileno que pueden tener propiedades deseables. En un aspecto, una película respirable comprende una capa formada a partir de una composición que comprende una primera composición, en donde la primera composición comprende cuando menos un polímero basado en etileno, y en donde la primera composición comprende un valor de MWCDI mayor de 0.9, y una proporción de índice de fusión (l₁₀/l₂) que satisface la siguiente ecuación: l₁₀ / l₂ ³ 7.0 - 1.2 x log (I₂).

tampas de garrafas e processo para produÇço de tampas de garrafas.

ETHYLENE/α-OLEFIN INTERPOLYMERS CONTAINING LOW CRYSTALLINITY HARD BLOCKS

The invention is related to an ethylene/α-olefin interpolymer having at least a hard segment and at least a soft segment. The soft segment contains a higher amount of comonomers than the hard segment. The hard segment has low crystallinity. The copolymer has a number of unique characteristics disclosed herein.ethylene/α-olefin interpolymers containing low crystallinity hard blocks ...

CATALYTIC OLEFIN BLOCK COPOLYMERS WITH CONTROLLED BLOCK SEQUENCE DISTRIBUTION AND AT LEAST ONE LOW CRYSTALLINITY HARD BLOCK

The invention is related to catalytic olefin block copolymers with a controlled block sequence distribution and at least one low crystallinity hard block. The block copolymer has a number of unique characteristics disclosed here.

ETHYLENE/A-OLEFIN INTERPOLYMERS CONTAINING LOW CRYSTALLINITY HARD BLOCKS

The invention is related to an ethylene/?-olefin interpolymer having at least a hard segment and at least a soft segment. The soft segment contains a higher amount of comonomers than the hard segment. The hard segment has low crystallinity. The copolymer has a number of unique characteristics disclosed herein.

ETHYLENE-BASED POLYMER COMPOSITIONS WITH IMPROVED VISCOSITIES

The invention provides a composition comprising a first composition comprising the following: A) a first ethylene/α-olefin interpolymer that has a weight average molecular weight (Mw) greater than 90,000 g/mole and a MWD less than, or equal to 3, each as determined by conventional GPC; B) a second ethylene/α-olefin interpolymer; and wherein the first composition has a number average molecular weight (Mn) less than 10,000 g/mole, as determined by conventional GPC; and wherein the α-olefin of first interpolymer is the same as the α-olefin of the second interpolymer.

POLYOLEFIN COMPOSITIONS

Polyolefin compositions particularly suitable for cast film, exhibiting heat sealability, retortability, low haze and stiffness, comprising: 1) 75-85% of a propylene homopolymer or copolymer of propylene with ethylene and/or one or more C4-C10 α-olefin(s), the homopolymer or copolymer having melting temperature equal to or higher than 150°C, 2) 15-25% of a copolymer of ethylene with one or more C4-C10 α-olefin(s) containing from 20 to 30% of said C4-C10 α-olefin(s); said composition having MFR (at 230°C, 2.16 kg) of from 5-10 g/10 min, the total content of ethylene of from 10 to 20 %, the total content of C4-C10 α-olefin(s) of from 2 to 8 %, the ratio XStot/XSm of the total fraction soluble in Xylene at room temperature to the fraction soluble in Xylene at room temperature of the matrix component (1) of from 5 to 15, and the value of the intrinsic viscosity of the total fraction soluble in Xylene at room temperature (XSIVtot) of 1.5 dl/g or less.

Phase change material (PCM) compositions for thermal management

The present invention relates to a Phase Change Material (PCM) composition comprising a) from 20 to 80 wt % of a PCM; and b) from 20 to 80 wt % of one or more polymers chosen from the group consisting of b1) Very Low Density Polyethylene (VLDPE) having a density equal or lower than 0.910 g/cm3 measured according to ASTM 792; b2) Ethylene Propylene Rubber (EPR) having a density equal or lower than 0.900 g/cm3 measured according to ASTM 792; b3) Styrene Ethylene Butadiene Styrene (SEBS) copolymers; and b4) Styrene Butadiene Styrene (SBS) copolymers. The PCM composition of the present invention can be used in applications where thermal management is needed, like for example in building, automotive, packaging, garments and footwear.

Aqueous polyolefin dispersions for textile impregnation

The present invention provides an article formed by impregnating a fibrous structure with a compound, the compound including an aqueous dispersion, the dispersion having (a) at least one polymer selected from the group consisting of an ethylene-based thermoplastic polymer, a propylene-based thermoplastic polymer, and mixtures thereof; (b) at least one polymeric stabilizing agent; and (c) water; and removing at least a portion of the water from the impregnated fibrous structure. The present invention also provides a method of forming a stiffened textile. The method may include the steps of: forming a compound, the compound including an aqueous dispersion having (a) at least one polymer selected from the group consisting of an ethylene-based thermoplastic polymer, a propylene-based thermoplastic polymer, and mixtures thereof, (b) at least one polymeric stabilizing agent, and (c) water; impregnating a textile with the compound; and removing at least a portion of the water from the impregnated ...

Polyolefin blends and pipe

A polyolefin blend comprising: (a) from 30 to 80 weight % of a low molecular weight copolymer comprising from 85 to 100 weight % of ethylene and from 15 to 0 weight % of one or more C 4-8 alpha olefins having a density from 0.953 to 0.965 g/cm 3 and a melt flow rate (2.16 kg 190° C.) from 0.1 to 20.0 g/10 minutes; and (b) from 70 to 20 weight % of a high molecular weight copolymer comprising from 85 to 99.9 weight % of ethylene and from 15 to 0.1 weight % of one or more C 4-8 alpha olefins having a density from 0.915 to 0.940 g/cm 3 and a melt flow rate (21.6 kg 190° C.) from 0.05 to 5.0 g/10 minutes, said copolymer being prepared with a single site catalyst is useful in the preparation of pipe.

POLYMER COMPOSITION AND CABLE WITH ADVANTAGEOUS ELECTRICAL PROPERTIES

The invention relates to a polymer composition comprising polyolefin (a), which is other than low density polyethylene (LDPE), and polyolefin (b), which is an LDPE polymer and obtainable by a high pressure process which process comprises the steps: (i) compressing one or more monomer(s) under pressure in a compressor, using a compressor lubricant for lubrication, (ii) polymerising a monomer optionally together with one or more comonomer(s) in a polymerisation zone, (iii) separating the obtained polyolefin (b) from the unreacted products and recovering the separated polyolefin in a recovery zone, wherein in step (i) the compressor lubricant comprises a non-mineral oil; a power cable, e.g. of a direct current (DC) power cable, use of a polymer composition and a process for producing a DC power cable. 1. A polymer composition comprisingpolyolefin (a), which is other than low density polyethylene (LDPE), andpolyolefin (b), which is an LDPE polymer and obtainable by a high pressure process which process comprises the steps:(i) compressing one or more monomer(s) under pressure in a compressor, using a compressor lubricant for lubrication,(ii) polymerising a monomer optionally together with one or more comonomer(s) in a polymerisation zone,(iii) separating the obtained polyolefin (b) from the unreacted products and recovering the separated polyolefin in a recovery zone,wherein in step (i) the compressor lubricant comprises a non-mineral oil.2. A polymer composition according to claim 1 , wherein the non-mineral oil is polyalkylene glycol (PAG).3. A polymer composition according to claim 1 , wherein the polyolefin (a) is selected from a polyethylene or a polypropylene.4. A polymer composition according to claim 1 , wherein the polyolefin (a) is a polyethylene produced in the presence of an olefin polymerisation catalyst claim 1 , e.g. a polyethylene selected from a MDPE polymer or a HDPE polymer claim 1 , for example claim 1 , a HDPE polymer.5. A polymer composition ...

Ethylene copolymers, methods for their production, and use

Provided is an ethylene copolymer having 40 wt. % to 70 wt. % of units derived from ethylene and at least 30 wt. % of units derived from at least one α-olefin having 3 to 20 carbon atoms and has the following properties: (a) a weight-average molecular weight (Mw), as measured by GPC, in the range of about 50,000 to about 200,000 g/mol; (b) a melting point (Tm) in ° C., as measured by DSC, that satisfies the relation: Tm >3.4× E −180 where E is the weight % of units derived from ethylene in the copolymer; (c) a ratio of Mw/Mn of about 1.8 to about 2.5; (d) a content of Group 4 metals of no more than 5 ppm; and (e) a ratio of wt ppm Group 4 metals/wt ppm Group 5 metals of at least 3. Also provided are methods for making an ethylene copolymer and compositions comprising an ethylene copolymer.

POLYOLEFIN FILM FOR ENVELOPES WITH WINDOWS

Described is a bi-oriented polyolefin film comprising at least one B layer comprising at least one propylene polymer and 2.0-5.0% by weight of carbonate of at least one alkaline or alkaline earth metal, wherein the carbonate has average particle diameter d(50) of less than or equal to 2.0 micron. 1. A bioriented polyolefin film comprising at least one layer B comprising at least one propylene polymer (P1) and 2.0-5.0% by weight of carbonate of at least one alkali or alkaline earth metal , wherein the carbonate has average particle diameter d(50) of less than or equal to 2.0 micron.2. The bioriented polyolefin film according to claim 1 , wherein the propylene polymer (P1) is selected from the group consisting of propylene homopolymers claim 1 , copolymers of propylene with at least one comonomer selected from the group consisting of ethylene claim 1 , linear or branched C4-C12 alpha-olefins claim 1 , and combinations thereof claim 1 , wherein the copolymers of the propylene have a copolymerised comonomer content equal to or less than 2.0% by weight with respect to the weight of the copolymer.3. The bioriented polyolefin film according to claim 1 , wherein the propylene polymer (P1) is a propylene homopolymer.4. The bioriented polyolefin film according to comprising at least three layers A/B/C claim 1 , wherein the layer A and the layer C comprise at least one polyolefin (P2) independently selected from the group consisting of:propylene polymers selected from the group consisting of propylene homopolymers, copolymers of propylene with at least one comonomer selected from the group consisting of ethylene, linear or branched C4-C12 alpha-olefins and combinations thereof, wherein said copolymers of the propylene have a copolymerised comonomer content of about 0.5-20% by weight;ethylene polymers selected from the group consisting of ethylene homopolymers, ethylene copolymers with at least one comonomer selected among linear or branched C4-C12 alpha-olefins; andmixtures ...

MOLDED ARTICLES (INCLUDING AUTOMOBILE PARTS) AND RELATED FILLED THERMOPLASTIC POLYOLEFIN COMPOSITIONS

A molded article made from and/or containing a polymeric composition made from and/or containing a high melt flow rate polypropylene homopolymer composition, a compatibilizer, a polyethylene-based elastomer, and talc is provided. An automobile part, including bumper facias, body side-molding, instrumental panels, side pillars, and door trims, with improved coefficients of linear thermal expansion is also provided.

MULTIMODAL POLYETHYLENE POLYMERS AND PROCESS PREPARING SAID POLYMER

MULTIMODAL POLYMER

HALOGEN FREE FLAME RETARDANT POLYMERIC COMPOSITIONS

ОГНЕЗАЩИТНАЯ ПОЛИОЛЕФИНОВАЯ КОМПОЗИЦИЯ

Изобретение относится к огнезащитным композициям, которые используют в текстильных материалах. Предложены огнезащитная полиолефиновая композиция, содержащая от 20 до 90 мас.% пластомера на основе этилена с плотностью в диапазоне от 0,850 до 0,915 г/см3 и скорость течения расплава под нагрузкой 2,16 кг (MFR2) в диапазоне от 0,5 до 30 г/10 мин, пластомер на основе пропилена с плотностью в диапазоне от 0,860 до 0,910 г/см3 и MFR2 в диапазоне от 0,01 до 30 г/10 мин и антипирен, применение предложенной огнезащитной полиолефиновой композиции для нанесения покрытия на тканевую подложку, способ нанесения предложенной огнезащитной полиолефиновой композиции на тканевую подложку, тканевая подложка, содержащая предложенную огнезащитную полиолефиновую композицию и изделие из предложенной тканевой подложки. Технический результат – изготовление текстильных материалов с огнестойким полимерным покрытием, обладающих высокими физико-механическими характеристиками, такими как изгиб, предел прочности при растяжении ...

ЛИТЬЕВАЯ КОМПОЗИЦИЯ ИЗ ПОЛИЭТИЛЕНА С МУЛЬТИМОДАЛЬНЫМ МОЛЕКУЛЯРНО-МАССОВЫМ РАСПРЕДЕЛЕНИЕМ ДЛЯ ПОЛУЧЕНИЯ ТРУБ С УЛУЧШЕННЫМИ МЕХАНИЧЕСКИМИ СВОЙСТВАМИ

Изобретение относится к литьевой композиции из полиэтилена с мультимодальным молекулярно-массовым распределением для получения труб, а также к способу получения такой литьевой композиции посредством многостадийной последовательности реакций, состоящей из последовательных стадий полимеризации, в присутствии каталитической системы, включающей в себя катализатор Циглера и сокатализатор. Композиция содержит от 45 до 55 мас.% этиленового гомополимера А с низкой молекулярной массой, от 20 до 40 мас.% высокомолекулярного сополимера В, состоящего из этилена и другого олефина с числом атомов углерода от 4 до 8 в количестве от 1 до 8 мас.% в расчете на массу высокомолекулярного сополимера, и от 15 до 30 мас.% этиленового сополимера С со сверхвысокой молекулярной массой, содержащего от 1 до 8 мас.% от массы сверхвысокомолекулярного сополимера С, этилена и одного или нескольких олефинов с числом атомов углерода от 4 до 8. Композиция при сохранении хорошей способности к переработке в качестве исходного ...

МАТЕРИАЛ ДЛЯ ГЕРМЕТИЗАЦИИ СОЛНЕЧНЫХ БАТАРЕЙ И МОДУЛЬ СОЛНЕЧНОЙ БАТАРЕИ, ИЗГОТОВЛЕННЫЙ С ЕГО ИСПОЛЬЗОВАНИЕМ

Изобретение относится к герметизирующему материалу для солнечных батарей и модулю солнечной батареи, полученному при использовании герметизирующего материала. Герметизирующий материал содержит, по меньшей мере, адгезивный слой (I) и слой (II) композиции смолы (С), который содержит статистический сополимер этилена-α-олефина (А) с теплотой плавления кристаллов от 0 до 70 Дж/г, измеренной при скорости нагрева 10° С/мин посредством дифференциальной сканирующей калориметрии (ДСК), и блок-сополимер этилена-α-олефина (В), который имеет измеренные при скорости нагрева 10° С/мин посредством ДСК максимальную температура плавления кристаллов 100° С или выше и теплоту плавления кристалла от 5 до 70 Дж/г. При этом адгезивный слой (I) выполнен из композиции смолы (Z), которая имеет теплоту плавления кристаллов от 0 до 70 Дж/г, измеренную при скорости нагрева 10° С/мин посредством ДСК, и содержит смолу на основе полиэтилена (X) и смолу на основе силан-модифицированного этилена (Y). Герметизирующий материал ...

ВЫСОКОПРОЧНАЯ ТРУБА ИЗ ПОЛИМЕРА НА ОСНОВЕ ЭТИЛЕНА

Изобретение относится к высокопрочным трубам из полимеров. Высокопрочная труба изготовлена из полимера на основе этилена, в котором соотношение веса низкомолекулярной составной части к весу высокомолекулярной составной части находится в интервале значений 0,5 - 2,0. В результате повышаются механические свойства трубы. 8 з.п.ф-лы, 2 табл.

КРОЮЩИЙ МАТЕРИАЛ ДЛЯ САМОКЛЕЯЩИХСЯ ТЕРМОПЛАВКИХ КЛЕЕВ

Изобретение относится к неклейкой пленкообразующей полимерной композиции (кроющий материал), а также к самоклеящимся термоплавким клеям в форме гранул, покрытых полимерной композицией, которые могут быть получены соэкструзией термоплавкого клея и кроющего материала. При этом пленкообразующая композиция содержит 5-40 вес.% по меньшей мере одного воска Фишера-Тропша с температурой плавления >95°C и 30-70 вес.% по меньшей мере одного полиолефина, полученного металлоценовым катализом и имеющего точку размягчения >95°C и индекс текучести расплава (MFI) (230°C, 2,16 кг) в интервале от ≤1000 до ≥300 г/10 мин. Кроме того, изобретение относится к подходящему применению таких термоплавких клеев, способам их применения и к продуктам, содержащим эти клеи. Изобретение обеспечивает уменьшение температуры нанесения термоплавкого клея, покрытого неклейким кроющим материалом, и его однородное смешение с ядром. 4 н. и 8 з.п. ф-лы, 1 ил., 1 табл., 2 пр.

Композиция пропиленового сополимера с превосходными оптическими и механическими свойствами

Изобретение относится к полипропиленовым композициям и изделиям из них. Предложена полипропиленовая композиция (Р) для получения пленок, содержащая: a) от 88,0 до 96,0 мас.%, в расчете на общую массу полипропиленовой композиции (Р), сополимера (С) пропилена и 1-гексена, включающего i) первый статистический пропиленовый сополимер (А) пропилена и 1-гексена, имеющий содержание 1-гексена в диапазоне от 0,1 до 4,0 мас.%, и ii) второй статистический пропиленовый сополимер (В) пропилена и 1-гексена, имеющий более высокое содержание 1-гексена, чем первый статистический пропиленовый сополимер (А), где содержание 1-гексена находится в диапазоне от 4,0 до 15,0 мас.%, где сополимер (С) имеет содержание растворимых в ксилоле веществ (XCS) в диапазоне от 8,0 мас.% до 30,0 мас.%, и b) от 4,0 до 12,0 мас.%, в расчете на общую массу полипропиленовой композиции (Р), пластомера (PL), представляющего собой эластомерный сополимер этилена и по меньшей мере одного С4-С10 α-олефина, характеризующегося плотностью ...

РЕОЛОГИЧЕСКИ МОДИФИЦИРОВАННЫЕ, ИМЕЮЩИЕ ОТНОСИТЕЛЬНО ВЫСОКУЮ ПРОЧНОСТЬ РАСПЛАВА ПОЛИЭТИЛЕНОВЫЕ КОМПОЗИЦИИ И СПОСОБЫ ИЗГОТОВЛЕНИЯ ТРУБ, ПЛЕНОК, ЛИСТОВ И ИЗДЕЛИЙ, ФОРМОВАННЫХ РАЗДУВОМ

... 1. Композиция, включающая продукт реакции: (a) первой композиции, содержащей компонент LMW полиэтилена; и компонент HMW полиэтилена, и (b) второй композиции, содержащей связывающее количество, по меньшей мере, одного полисульфонилазида, и где первая композиция имеет, по существу, единственный пик на кривой LTD, и где композиция имеет значение PENT большее, чем 1000 ч, при 80°C и приложенном напряжении примерно 2,4 МПа. 2. Способ изготовления трубы, включающий в себя (a) выбор полимерной композиции, имеющей, по существу, единственный пик на кривой LTD; (b) связывание полимерной композиции с полисульфонилазидом и (c) экструдирование полимерной композиции с формированием трубы. 3. Композиция по п.1, которая имеет значение PENT большее примерно, чем 3000 ч, примерно при 80°C и примерно 3 МПа. 4. Композиция по п.1, которая имеет значение PENT большее примерно, чем 6500 ч, примерно при 80°C и примерно 3 МПа. 5. Композиция по п.1, в которой композиция имеет плотность большую примерно, чем 0,940 ...

ТЕРМОПЛАСТИЧНЫЙ ВУЛКАНИЗАТ, СОДЕРЖАЩИЙ ИНТЕРПОЛИМЕРЫ ЭТИЛЕНА/α-ОЛЕФИНОВ

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

ПОЛИМЕРНАЯ КОМПОЗИЦИЯ, ПРЕДНАЗНАЧЕННАЯ ДЛЯ ИЗГОТОВЛЕНИЯ КРЫШЕК И КОЛПАЧКОВ

КРОЮЩИЙ МАТЕРИАЛ ДЛЯ САМОКЛЕЯЩИХСЯ ТЕРМОПЛАВКИХ КЛЕЕВ

ATMUNGSFÄHIGE MEHRSCHICHTFOLIE MIT ZERBRECHBARER AUSSENSCHICHT

POLYOLEFIN COMPOSITION WITH HIGH BALANCE OF RIGIDITY, IMPACT STRENGTH AND ELONGATION OF BREAK AND SMALL HEAT SHRINKAGE

POLYETHYLENE MOLDING MATERIAL TO THE OUTER CASING OF ELECTRICAL CABLES

IMPACTTOUGH POLYOLEFIN COMPOSITIONS

POLYMER COMPOSITION FOR PIPES

LLDPE pressure pipe

Stable breathable elastic articles

Polyethylene molding composition for external sheathing of electric cables

Elastic film containing a renewable starch polymer

A film that contains a thermoplastic composition having a substantial portion of a renewable, natural starch polymer, and yet is elastic and exhibits good strength properties, is provided. Although starch is normally chemically incompatible with most elastomeric polymers due to their different polarities, the present inventors have discovered that phase separation may be minimized by selectively controlling certain aspects of the film, such as the nature of the elastomeric polymer and the starch polymer, and other film components, the relative amount of the film components, and the process for making the film.

Maleic anhydride grafted lldpe having high melt index

Disclosed is a linear low-density polyethylene grafted with maleic anhydride (MAH-g-LLDPE). The MAH-g-LLDPE has a unique combination of properties including a low density and a high melt index.

Rigid renewable polyester compositions having a high impact strength and tensile elongation

A thermoplastic composition that contains a rigid renewable polyester and a polymeric toughening additive is provided. The toughening additive can be dispersed as discrete physical domains within a continuous matrix of the renewable polyester. An increase in the deformation force and elongational strain causes debonding to occur in the renewable polyester matrix at those areas located adjacent to the discrete domains. This can result in the formation of a plurality of voids adjacent to the discrete domains that can help to dissipate energy under load and increase impact strength. To even further increase the ability of the composition to dissipate energy in this manner, an interphase modifier may be employed that reduces the degree of friction between the toughening additive and renewable polyester and thus enhances the degree and uniformity of debonding.

FILMS HAVING A COMBINATION OF HIGH IMPACT STRENGTH AND HIGH SHRINK

Heat shrinkable films having at least one layer comprising a blend of a first ethylene/alpha-olefin copolymer having a M w/M n of from about 1 to 3.0 and a second ethylene/alpha-olefin copolymer having an Mw/Mn greater than 3.0. The first ethylene/alphaolefin copolymer has a density of from about 0.91 g/cc to about 0.925 g/cc, a first melting point of from about 85.degree.C to about 110.degree.C, and a second melting point of from about 111.degree.C to about 125.degree.C. The second ethylene/alpha-olefin copolymer has a density of from about 0.90 to about 0.91 g/cc. The first ethylene/alpha-olefin copolymer makes up from about 5 to about 40 weight percent of the blend. The second ethylene/alpha-olefin makes up from about 60 to about 95 weight percent of the blend. The blend makes up from about 40 to 100 weight percent of the total weight of the film. The film has a total free shrink at 85.degree.C of at least 60 percent and a peak load impact strength of at least 135 Newtons per mil. The ...

COMPOSITION SUITABLE FOR HIGH GLOSS BLOWN FILM AND FILMS MADE THEREFROM

The invention is directed to a composition suitable for high gloss air quenched blown films. The films are comprised of from 2 to 15 percent by weight of a substantially isotactic propylene-based copolymer having a melt flow rate of at least 5 g/10 minutes and having from 8 to 21 mole percent units derived from an alpha olefin; and from 85 to 98 percent by weight of an ethylene-based copolymer having a melt index of from 0.1 to 9 g/10 minutes. An air quenched blown film made from the inventive composition exhibits a value for gloss greater than the value for gloss exhibited by an air quenched blown film made solely from the ethylene-based copolymer.

CONFORMABLE HOLOGRAPHIC LABELS

This invention relates to a facestock (10) comprising a polymeric film (11), and a holographic layer (12)on a surface of the facestock (10), wherein the film (11) is conformable. The invention also relates to label stocks prepared from the facestocks (10), and labels made therefrom. The labels are useful on squeezable containers. An advantage of these labels is that there is little or no cracking or flaking of the holographic image.

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

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

HALOGEN-FREE FLAME RETARDANT COMPOSITIONS WITH IMPROVED TENSILE PROPERTIES

A composition for use in jacketing or insulation materials is disclosed, the composition comprising from 42 to 54 percent by weight of a halogen-free flame retardant, from 26 to 46 percent by weight of an ethylene alkyl acrylate copolymer, such as ethylene ethyl acrylate, optionally from 0 to 15 percent by weight of an ethylene-based polymer, optionally from 0 to 12 percent by weight of a coupling agent, and optionally from 0 to 1 percent by weight of an antioxidant. A cable insulation layer, a cable protective outer jacket, a cable core sheath, and cable comprising the jacketing material composition are also disclosed. Components comprising the composition exhibit balanced and improved melt rheological, tensile, and flame-retardant properties.

NUCLEATED POLYETHYLENE BLENDS AND THEIR USE IN MOLDED ARTICLES

A polyethylene blend comprises a nucleated polyethylene homopolymer composition and an un-nucleated or nucleated bimodal polyethylene copolymer.

POLYETHYLENE AND POLYPROPYLENE BLENDS FOR LIQUID PACKAGING FILMS

There is disclosed a flowable material packaging film comprising at least a resin blend of (a) from about 33 wt% to about 80 wt% of at least one ethy lene-C4 to C10-.alpha.-olefin interpolymer having a melt index of from 0.4 t o 1.5 g/10min (190°C, 2.15kg), a density of from 0.900 to 0.916 g/cc; and (b ) from about 67 wt% to about 20 wt% of at least one heterogeneous interpolym er of propylene with ethylene or ethylene and butene comprising from about 7 1 mol% to about 86 mol% propylene and from about 29 mol% to about 14 mol% et hylene or ethylene and butene, the interpolymer having an overall weight ave rage molecular weight (Mw) of at least about 400,000, a xylene soluble phase of not less than 30% (wt), with the xylene soluble phase having a Mw of at least about 275,000 and said heterogeneous interpolymer of polypropylene has a density of from 0.875 to 0.91 g/cc; and the film has a Hot Tack Initiatio n Temperature in the range of from about 100°C to about 140°C and a Hot Tack Strength ...

POLYETHYLENE COMPOSITION FOR PRESSURE PIPES WITH ENHANCED FLEXIBILITY

The present invention relates to a polyethylene composition comprising a base resin which comprises (a) an ethylene homo- or copolymer fraction (A); and (b) an ethylene homo- or copolymer fraction (B), wherein (i) fraction (A)has a lower weight average molecular weight than fraction (B); (ii) the base resin has a density of 932 to 938 kg/m3; (iii) the polyethylene composition has an MFR5 of 0.1 to 0.6 g/10 min; and (iv) the polyethylene composition has a shear stress .eta.2.7 kPa of 85 to 230 kPas. Furthermore, the present invention relates to an article, preferably a pipe comprising said composition and to the use of said composition for the production of an article, preferably a pipe.

COMPOSITIONS COMPRISING THERMOPLASTIC STARCH

The invention relates to a composition comprising very low density polyethylene having a density of less than 0.905g/cm3, ethylene acrylic acid copolymer and thermoplastic starch and/or the constituent components thereof.

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

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

POLYMER FILMS HAVING IMPROVED HEAT SEALING PROPERTIES

A polymer composition comprising an ethylene alpha-olefin copolymer, wherein the polymer composition is characterized as having (a) a density in the range of from greater than about 0.910 g/cc to about 0.930 g/cc, as determined according to ASTM D1505; (b) a melt index in the range of from greater than about 0.5 g/10 min to about 3 g/10 min, as determined by ASTM D1238, Condition 190 C/2.16 kg; (c) a molecular weight distribution of from about 3.4 to about 12, as determined by gel permeation chromatography (GPC); (d) a weight average molecular weight of from greater than about 85 kg/mol to about 160 kg/mol, as determined by gel permeation chromatography (GPC); and (e) a z-average molecular weight of from greater than about 210 kg/mol to about 500 kg/mol, as determined by gel permeation chromatography (GPC).

POLYETHYLENE MOLDING COMPOSITION FOR PRODUCING BLOWN FILMS HAVING IMPROVED MECHANICAL PROPERTIES

The invention relates to a polyethylene molding composition having a multimodal molar mass distribution particularly suitable for blow molding films having a thickness in the range from 8 to 200 .mu.m. The molding composition has a density at a temperature of 23 ~C in the range from 0.940 to 0.948 g/cm3 and an MFR190/5 of the final product after extrusion in the range from 0.10 to 0.50 dg/min. The composition comprises from 40 to 60% by weight of a first ethylene polymer fraction made of a homopolymer A having a first molecular weight, from 25 to 45% by weight of a second ethylene polymer fraction made of a first copolymer B of ethylene and at least one first comonomer from the group of olefins having from 4 to 8 carbon atoms, the first copolymer B having a second molecular weight higher than the first molecular weight, and from 10 to 30% by weight of a third ethylene polymer fraction made of a second copolymer C having a third molecular weight higher than the second molecular weight. The ...

PIPE OF POLYETHYLENE HAVING IMPROVED MECHANICAL PROPERTIES

The invention relates to a high strength pipe of ethylene polymer having a bimodal molecular weight distribution. Such pipe has a stress cracking resistance of .gtoreq. 1400 h, a fracture toughness of .gtoreq. 7 mJ/mm2 and a modulus of creep in flexure, measured according to DIN 54852-Z4, of .gtoreq. 1100 N/mm2. The pipe according to the invention is produced from an ethylene polymer in which the ratio of weight of the low molecular weight fraction to the weight of the higher molecular weight fraction is in the range from 0.5 to 2.0 and which has a melt flow index MFI5/190.degree.c of .ltoreq. 0.35 g/10 min. It is particularly suitable for the trans-portation of gases and water.

STABLE BREATHABLE ELASTIC ARTICLES

A thermally stable microporous breathable film is provided comprising at least 35 % filler, by weight of the filled-film, and a thermoplastic polymer blend of a first polyethylene polymer and a second polyethylene polymer. The first polyethylene polymer comprises 30 % - 70 % by weight of the polymer blend and can have a density between about 0.86 g/cm3 and 0.89 g/cm3 and the second polyethylene polyner can have a density between about 0.90 g/cm3 and 0.92 g/cm3. The filled-film can be uniaxially or biaxially oriented to form a microporous film and/or film laminate having good body conformance and which retains a high WVTR at 37 ~C and above.

METALLOCENE - CATALYSED POLYETHYLENE

PROCESS FOR THE PREPARATION OF A COMPOSITION COMPRISING HETEROPHASIC PROPYLENE COPOLYMER AND TALC

Layered product

An easy-to-tear laminate is provided which is satisfactory in tearability and heat-sealing strength and excellent in ease of opening and contents-protecting performance. The laminate comprises a base layer and a layer comprising 10-95% by weight specific ethylene-based terpolymer (A) and 5-90% by weight specific low-density polyethylene (B) produced by the high-pressure radical polymerization method.

Impact resistant polyolefin compositions

Solar cell sealing material, and solar cell module prepared by using same

Provided are a solar cell encapsulant material which facilitates production of solar cell modules, which does not require a crosslinking step and which is excellent in heat resistance and others, and a solar cell module produced by the use of the encapsulant material. The solar cell encapsulant material comprises a resin composition (C) that contains an olefin-based polymer (A) satisfying the following requirement (a) and an olefin-based polymer (B) satisfying the following requirement (b). (a) The crystal melting peak temperature of the polymer, as measured at a heating rate of 10° C./min in differential scanning calorimetry, is lower than 100° C. (b) The extrapolated onset temperature of melting of the polymer, as measured at a heating rate of 10° C./min in differential scanning calorimetry, is 100° C. or higher.

Polyolefin resin composition and molded article containing the same

There is provided a polyolefin resin composition capable of affording molded articles being superior in tensile elongation at break and impact resistance. The composition includes not less than 1 wt % and less than 80 wt % of a propylene polymer (I) that is a propylene homopolymer or a copolymer of propylene and at least one comonomer, the copolymer having more than 0 wt % and less than 20 wt % of structural units derived from the at least one comonomer, not less than 1 wt % and less than 80 wt % of a propylene copolymer (II) having 20 to 80 wt % of structural units derived from the comonomer and/or an ethylene copolymer (III) having a density of less than 940 kg/m 3 , and more than 20 wt % and not more than 98 wt % of an ethylene polymer (IV) having an MFR of 12 to 100 g/10 minutes and a density of 940 to 970 kg/m 3 .

INTEGRAL HOT MELT ADHESIVE PACKAGING FILMS AND USE THEREOF

Propylene polymer based packaging films for encapsulating hot melt adhesives are disclosed. The packaging films are readily miscible with the various hot melt adhesive chemistries during the melting stage without deleteriously affecting the adhesive properties, making the packaging film particularly well suited for packaging hot melt adhesives in a pillow, cylinder, pouch, block, cartridge and like forms. 1. A hot melt packaging film comprising a polymer blend ,wherein the polymer blend comprises at least 70 wt % of propylene content; and{'sup': 6', '8, 'wherein the packaging film has (a) a viscosity range of about 200,000 to 3,000,000 cps at 200° C.; (b) a peak melting temperature range of about 90 to 140° C. (c) a Tm offset temperature below 149° C.; and (d) a storage modulus (G′) range of about 1×10to about 1×10Pascal at 100° C.'}2. The packaging film of further comprising an additive selected from the group consisting of anti-blocking agent claim 1 , antioxidant claim 1 , flow modifier claim 1 , filler claim 1 , dye and mixtures thereof.3. The packaging film of wherein at least one polymer in the polymer blend is a metallocene catalyzed polypropylene polymer.4. The packaging film of wherein the polymer blend comprises ethylene and/or butene comonomers.5. The packaging film of wherein the polymer blend comprises:a. from about 70 to about 99 wt % of propylene content;b. from about 1 to about 30 wt % of ethylene and/or butene content;6. An article comprising the packaging film of .7. The article of claim 6 , which is a hot melt adhesive package.8. The article of claim 7 , which is a pillow claim 7 , cylinder claim 7 , pouch claim 7 , block claim 7 , cartridge or chub.9. An integral hot melt adhesive package comprising:(a) a hot melt adhesive selected from the group consisting of poly-alpha-olefins, rubbers, styrenic block-copolymers, ethylene-vinyl acetates, ethylene-butyl acetates, and mixtures thereof; and{'sup': 6', '8, '(b) a packaging film, which comprises a ...

ELASTOMER COMPOSITION, AND INSULATED WIRE AND INSULATED CABLE USING THE SAME

An elastomer composition includes a base polymer including not less than 50 mass % of ethylene-α-olefin copolymer, and a talc that has a mass ratio of silicon to magnesium (Si/Mg) of 0.9 to 1.8 and is mixed in an amount of 100 to 250 parts by mass per 100 parts by mass of the ethylene-α-olefin copolymer. 1. An elastomer composition , comprising:a base polymer including not less than 50 mass % of ethylene-α-olefin copolymer; anda talc that has a mass ratio of silicon to magnesium (Si/Mg) of 0.9 to 1.8 and is mixed in an amount of 100 to 250 parts by mass per 100 parts by mass of the ethylene-α-olefin copolymer.2. The elastomer composition according to claim 1 , further comprising:an amide-based lubricant mixed in an amount of 0.1 to 2 parts by mass per 100 parts by mass of the ethylene-α-olefin copolymer; anda thiuram-based vulcanization retarder mixed in an amount of 0.1 to 1 part by mass per 100 parts by mass of the ethylene-α-olefin copolymer,wherein the mixed amount in total of the amide-based lubricant and the thiuram-based vulcanization retarder is not more than 2 parts by mass per 100 parts by mass of the ethylene-α-olefin copolymer.3. An insulated wire claim 1 , comprising:a conductor; andan insulation layer covering an outer periphery of the conductor,{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'wherein the insulation layer comprises the elastomer composition according to and being crosslinked.'}4. An insulated cable claim 1 , comprising:at least one insulated wire comprising a conductor and an insulation layer; anda sheath covering an outer periphery of the at least one insulated wire,{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'wherein the sheath comprises the elastomer composition according to and being crosslinked.'} The present application is based on Japanese patent application No. 2013-143881 filed on Jul. 9, 2013, the entire contents of which are incorporated herein by reference.1. Field of the InventionThe invention relates to an ...

Ethylene polymer composition and shaped article of the same

The present invention provides an ethylene polymer composition having a particularly high formability and having an excellent mechanical strength, a shaped article formed of such an ethylene polymer, and a film and multilayer film having a particularly excellent blocking resistance. An ethylene polymer composition (γ) according to the present invention includes a specific ethylene polymer (α) that is a copolymer of ethylene and an α-olefin having 4 to 10 carbon atoms and an ethylene polymer (β) that is a copolymer of ethylene and an α-olefin having 4 to 10 carbon atoms but different from the ethylene polymer (α), and weight fraction [Wα] of the ethylene polymer (α) is in the range of not less than 0.1 and not more than 0.9, and weight fraction [Wβ] of the ethylene polymer (β) is in the range of not less than 0.1 and not more than 0.9 (the sum of the Wα and the Wβ is 1.0).

POLYETHYLENE COMPOSITION AND FILM HAVING A GOOD PERMEABILITY, STIFFNESS AND SEALABILITY

A polyethylene composition includes a first polyethylene which is an ethylene copolymer having a weight average molecular weight of from 70,000 to 250,000 and a molecular weight distribution M/Mof <2.3, a second polyethylene which is an ethylene copolymer or homopolymer having a weight average molecular weight of from 15,000 to 100,000 and a molecular weight distribution M/Mof <2.3, and a third polyethylene which is an ethylene copolymer or homopolymer having a weight average molecular weight of from 70,000 to 250,000 and a molecular weight distribution M/Mof >2.3, where the first polyethylene has more short chain branching than the second polyethylene or the third polyethylene. The polyethylene composition has a soluble fraction in a CEF analysis of at least 10 weight percent. Film made from the polyethylene composition may have a machine direction 1% secant modulus of ≥190 MPa (at a film thickness of about 1 mil), a seal initiation temperature (SIT) of ≤100° C. (at a film thickness of about 2 mil), an area of hot tack window (AHTW) of ≥160 Newtons·C° (at a film thickness of about 2 mil) and an oxygen transmission rate (OTR) of ≥650 cmper 100 inch(at a film thickness of about 1 mil). 1. A polyethylene composition comprising:{'sub': w', 'w', 'n, 'from 5 to 80 wt % of a first polyethylene which is an ethylene copolymer, the first polyethylene having a weight average molecular weight Mof from 70,000 to 250,000, a molecular weight distribution M/Mof <2.3 and from 5 to 100 short chain branches per thousand carbon atoms;'}{'sub': w', 'w', 'n, 'from 5 to 80 wt % of a second polyethylene which is an ethylene copolymer or an ethylene homopolymer, the second polyethylene having a weight average molecular weight Mof from 15,000 to 100,000, a molecular weight distribution M/Mof <2.3 and from 0 to 20 short chain branches per thousand carbon atoms; and'}{'sub': w', 'w', 'n, 'from 5 to 80 wt % of a third polyethylene which is an ethylene copolymer or an ethylene homopolymer, the ...

Novel Medium Density Polyethylene Compositions

An ethylene alpha-olefin copolymer having (a) a density of from about 0.910 g/cc to about 0.940 g/cc; (b) a weight average molecular weight of from about 150,000 g/mol to about 300,000 g/mol; and (c) a melt index at a load of 2.16 kg of from about 0.01 dg/10 min. to about 0.5 dg/min.; wherein a 1 mil blown film formed from the polymer composition is characterized by (i) a Dart Impact strength greater than about 175 g/mil; (ii) an Elmendorf machine direction tear strength greater than about 20 g/mil; and (iii) an Elmendorf transverse direction tear strength greater than about 475 g/mil. 1. An ethylene alpha-olefin copolymer having:(a) a density of from about 0.910 g/cc to about 0.940 g/cc;(b) a weight average molecular weight of from about 150,000 g/mol to about 300,000 g/mol;(c) a CY-a value of from about 0.35 to about 0.65;(d) a ratio of high load melt index (HLMI) to melt index (MI) of from about 100 to about 2500: and(e) a 1% secant modulus in the machine direction of greater than about 90,000 psi when tested in accordance with ASTM D882.2. The copolymer of having a 2% secant modulus in the machine direction of greater than about 70 claim 1 ,000 psi when tested in accordance with ASTM D882.3. The copolymer of having a 1% secant modulus in the transverse direction of greater than about 110 claim 1 ,000 psi when tested in accordance with ASTM D882.4. The copolymer of having a 2% secant modulus in the transverse direction of greater than about 80 claim 1 ,000 psi when tested in accordance with ASTM D882.5. The copolymer of having a yield strain in the machine direction of less than about 8% when tested in accordance with ASTM D882.6. The copolymer of having a yield strain in the transverse direction of less than about 5% when tested in accordance with ASTM D882.7. The copolymer of having a moisture vapor transmission rate of less than about 1.3 g-mil/100 in-day when tested in accordance with ASTM F1249 at 100° F. and 90% relative humidity using a test specimen ...

Metallocene-Catalyzed Polyethylene

A metallocene-catalyzed polyethylene resin having a multimodal molecular weight and composition distribution, comprising from 45% by weight to 75% by weight of a low density fraction, said fraction having a density below or equal to 918 g/cm 3 as measured following the method of standard test ISO 1183 at a temperature of 23° C., wherein the density of the polyethylene resin is from 0.920 to 0.945 g/cm 3 , wherein the M w /M n of the polyethylene is of from 2.8 to 6, wherein the melt index MI2 of the polyethylene resin of from 0.1 to 5 g/10 min measured following the method of standard test ISO 1133 Condition D at a temperature of 190° C. and under a load of 2.16 kg; and wherein the composition distribution breadth index (CDBI) of the polyethylene resin is below 70%, as analyzed by quench TREF (temperature rising elution fractionation) analysis.

Polyethylene for injection molding and molded article using same

An object of the present invention is to provide a polyethylene for injection molding, which has an excellent balance between moldability and durability, and a molded article such as an injection-molded plastic fuel tank that has an excellent balance among injection moldability, durability, and impact resistance. The invention relates to a polyethylene for injection molding, the polyethylene comprising at least two types of specific polyethylenes, wherein the density, the high load melt flow rate, and the relationship between the weight ratio and the density of the polyethylene satisfy specific characteristics.

Polyamide-based Composite Resin Composition Having Excellent Gas Barrier Property

Provided is a polyamide-based composite resin composition which includes 30 to 80 wt % of a polyamide-based resin; 5 to 59 wt % of m-xylenediamine (MXD)-based modified nylon; 10 to 50 wt % of thermoplastic olefin rubber including a maleic anhydride-grafted ethylene-octene copolymer, a maleic anhydride-grafted ethylene-propylene-diene monomer, or a mixture thereof; 0.5 to 10 wt % of clay; and 0.01 to 5 wt % of carbon nanotubes (CNTs). According to the present invention, the polyamide-based composite resin composition is easily subjected to blow molding, is excellent in mechanical properties such as low-temperature impact strength and tensile strength, and is also capable of significantly enhancing a gas barrier property.

HEAT RESISTANT HYDROCARBON ELASTOMER COMPOSITIONS

Disclosed herein is a polyamide-filled curable hydrocarbon elastomer compositions having enhanced heat aging performance where the presence of conventional filler, such as carbon black or silica, does not detract from desired heat stability properties. Also disclosed are polyamide-filled curable hydrocarbon elastomer compositions where the use of compatibilzer is optional, for polyamides having an inherent viscosity of greater than 0.88 dL/g. 2. The composition of having a cure response MH-ML of at least 2.5 dN-m as determined according to ASTM D5289-07a claim 1 , operating at 0.5° arc and test conditions of 180° C. for 10 minutes.3. The composition of wherein reinforcing filler is present claim 1 , and is selected from the group consisting of carbon black claim 1 , hydrated alumina claim 1 , calcium carbonate claim 1 , barium sulfate claim 1 , titanium dioxide claim 1 , kaolin clay claim 1 , silica claim 1 , and silicate minerals.4. The composition of wherein said reinforcing filler contributes less than about 15 points Shore A hardness.5. The composition of wherein said inorganic reinforcing filler contributes less than about 10 points Shore A hardness.6. The composition of comprising from about 10 wt % to about 50 wt % polyamide.7. The composition of comprising from about 20 wt % to 40 wt % polyamide.8. The composition of wherein the polyamide has an inherent viscosity greater than about 1.0 dL/g.9. The composition of wherein the polyamide has an inherent viscosity greater than about 1.2 dL/g.10. The composition of wherein the polyamide is nylon 6 claim 1 , or nylon 6/6.11. The composition of wherein said curative is a peroxide curative.12. A process for making the curable polyamide-reinforced ethylene elastomer compound of claim 1 , said process comprising:(i) dispersing said 5 wt. % to 60 wt. % polyamide in said ethylene copolymer elastomer by mixing at a temperature above the melting peak temperature of the polyamide to provide a blend; (iia) wherein the ...

Method for producing olefin block polymer using group 4 transition metal complex

A method for producing an olefin block polymer, the method including: polymerizing olefins using a polymerization catalyst (X) and an organometallic compound (C) containing an atom of any of Groups 2, 12, and 13 of the periodic table of the elements, the organometallic compound (C) excluding an activating co-catalyst agent (B), wherein the polymerization catalyst (X) is formed by bringing a transition metal compound (A) into contact with the activating co-catalyst agent (B), the transition metal compound (A) is represented by the following general formula (1), and the activating co-catalyst agent (B) is selected from among an organoaluminumoxy compound (B-1), an organoboron compound (B-2), a zinc co-catalyst component (B-3), and ion-exchange layered silicate (B-4).

PROPYLENE COPOLYMER COMPOSITION WITH EXCELLENT OPTICAL AND MECHANICAL PROPERTIES

The present invention is directed to a polypropylene composition (P) comprising a copolymer (C) of propylene and 1-hexene comprising a first random propylene copolymer (A) of propylene and a 1-hexene, and a second random propylene copolymer (B) of propylene and 1-hexene having a higher 1-hexene content than the first random propylene copolymer (A) as well as a plastomer (PL) being an elastomeric copolymer of ethylene and at least one Cto Cα-olefin. Further, the present invention is directed to an article comprising said polypropylene composition (P) and the use of said polypropylene composition (P) as a sealing layer in a multi-layer film.

Ethylene/1-hexene Copolymer Having Excellent Processability And Mechanical Properties

The ethylene/1-hexene copolymer according to the present invention has excellent processability and mechanical properties, and thus can be applied to various fields such as food containers.

POLYMER COMPOSITION AND CABLE WITH ADVANTAGEOUS ELECTRICAL PROPERTIES

The invention relates to polymer composition comprising a polyolefin (a) and an inorganic filler (b) wherein the polyolefin (a) is obtainable by a high pressure process which process comprises the steps: (i) compressing one or more monomer(s) under pressure in a compressor, using a compressor lubricant for lubrication, (ii) polymerising a monomer optionally together with one or more comonomer(s) in a polymerisation zone, (iii) separating the obtained polyolefin (a) from the unreacted products and recovering the separated polyolefin (a) in a recovery zone, wherein in step (i) the compressor lubricant comprises a non-mineral oil, power cable, for example a direct current (DC) power cable, use of a polymer composition and a process for producing a DC power cable. 115-. (canceled)16. A polymer composition comprising a polyolefin (a) , a peroxide and an inorganic filler (b) wherein the polyolefin (a) is obtainable by a high-pressure process which process comprises the steps:(i) compressing one or more monomer(s) under pressure in a compressor, using a compressor lubricant for lubrication,(ii) polymerising a monomer optionally together with one or more comonomer(s) in a polymerisation zone,(iii) separating the obtained polyolefin (a) from the unreacted products and recovering the separated polyolefin (a) in a recovery zone, wherein in step (i) the compressor lubricant comprises a non-mineral oil; andwherein the polyolefin (a) is an unsaturated LDPE polymer, which is selected from an unsaturated LDPE homopolymer or an unsaturated LDPE copolymer of ethylene with one or more comonomer(s), and comprises C═C bonds in total amount of 0.2/1000 carbon atoms;wherein the amount of the inorganic filler (b) is 0.1 to 5.0 wt % based on the combined amount of the polyolefin (a) and the inorganic filler (b);wherein the polyolefin (a) comprises 10 to 250 ppm of the non-mineral oil; and wherein the polymer composition comprises peroxide in an amount of 5.0 to less than 40 mmol —O—O—/kg of ...

Low density ethylene-based compositions with improved melt strength, output, and mechanical properties

The invention provides a composition comprising the following: A) a first ethylene-based polymer, formed by a high pressure, free-radical polymerization process, and comprising the following properties: a) a Mw(abs)/Mw(GPC)<2.2; and b) a MS versus I2 relationship: MS≥C×[(I2) D ], where C=13.5 cN/(dg/min) D , and D=−0.55, c) a melt index (I2) from 0.1 to 0.9 g/10 min; and B) a second ethylene-based polymer; and wherein the second ethylene-based polymer has a melt index (I2) from 0.1 to 4.0 g/10 min.

POLYETHYLENE COMPOSITION AND FILM HAVING A GOOD PERMEABILITY, STIFFNESS AND SEALABILITY

A polyethylene composition which when made into a film layer having a thickness of about 1 mil exhibits a machine direction (MD) 1% secant modulus of ≥190 MPa and an oxygen transmission rate (OTR) of ≥650 cmper 100 inchper day, and when made into a film layer having a thickness of about 2 mil exhibits a seal initiation temperature (SIT) of ≤100° C. and an area of hot tack window (AHTW) of ≥160 Newtons·° C. 1. A polyethylene composition which when made into a film layer having a thickness of about 1 mil exhibits a machine direction (MD) 1% secant modulus of ≥190 MPa and an oxygen transmission rate (OTR) of ≥650 cmper 100 inchper day , and when made into a film layer having a thickness of about 2 mil exhibits a seal initiation temperature (SIT) of ≤100° C. and an area of hot tack window (AHTW) of ≥160 Newtons·° C.2. The polyethylene composition of claim 1 , which when made into a film layer having a thickness of about 1 mil has a machine direction (MD) 1% secant modulus of ≥200 MPa.3. The polyethylene composition of claim 1 , which when made into a film layer having a thickness of about 1 mil has a machine direction (MD) 1% secant modulus of ≥210 MPa.4. The polyethylene composition of claim 1 , which when made into a film layer having a thickness of about of about 1 mil has an oxygen transmission rate (OTR) of ≥700 cm3 per 100 inchper day.5. The polyethylene composition of claim 1 , which when made into a film layer having a thickness of about of about 1 mil has an oxygen transmission rate (OTR) of ≥740 cm3 per 100 inchper day.6. The polyethylene composition of claim 1 , which when made into a film layer having a thickness of about of about 1 mil has an oxygen transmission rate (OTR) of ≥800 cm3 per 100 inchper day.7. The polyethylene composition of claim 1 , which when made into a film layer having a thickness of about of about 2 mil has a seal initiation temperature (SIT) of ≤95° C.8. The polyethylene composition of claim 1 , which when made into a film layer having ...

Molded articles (including automobile parts) and related filled thermoplastic polyolefin compositions

A molded article made from and/or containing a polymeric composition made from and/or containing a high melt flow rate polypropylene homopolymer composition, a compatibilizer, a polyethylene-based elastomer, and talc is provided. An automobile part, including bumper facias, body side-molding, instrumental panels, side pillars, and door trims, with improved coefficients of linear thermal expansion is also provided.

POLYMER COMPOSITION AND CABLE WITH ADVANTAGEOUS ELECTRICAL PROPERTIES

The invention relates to polymer composition comprising a polyolefin (a) and an inorganic filler (b) wherein the polyolefin (a) is obtainable by a high pressure process which process comprises the steps: (i) compressing one or more monomer(s) under pressure in a compressor, using a compressor lubricant for lubrication, (ii) polymerising a monomer optionally together with one or more comonomer(s) in a polymerisation zone, (iii) separating the obtained polyolefin (a) from the unreacted products and recovering the separated polyolefin (a) in a recovery zone, wherein in step (i) the compressor lubricant comprises a non-mineral oil, power cable, for example a direct current (DC) power cable, use of a polymer composition and a process for producing a DC power cable. 119.-. (canceled)20. A polymer composition comprisinga polyolefin (a) and an inorganic filler (b)wherein the polyolefin (a) is obtainable by a high pressure process which process comprises the steps:(i) compressing one or more monomer(s) under pressure in a compressor, using a compressor lubricant for lubrication,(ii) polymerising a monomer optionally together with one or more comonomer(s) in a polymerisation zone,(iii) separating the obtained polyolefin (a) from the unreacted products and recovering the separated polyolefin (a) in a recovery zone,wherein in step (i) the compressor lubricant comprises a non-mineral oil.211. A polymer composition according to claim , wherein the non-mineral oil is polyalkylene glycol (PAG).221. A polymer composition according to claim , wherein the polymer composition has an electrical conductivity of 140 fS/m or less , for example , of 135 fS/m or less , for example , of 130 fS/m or less , for example , of 125 fS/m or less , for example , of 120 fS/m or less , for example , of 115 fS/m or less , for example , of from 0.01 to 110 fS/m or less , for example , of from 0.05 to 105 fS/m or less , when measured according to DC conductivity method using a 1 mm thick plaque sample as ...

Roofing Membranes, Compositions, and Methods Of Making The Same

A roofing membrane includes (A) about 40 to 75 wt. % silane-crosslinked polyolefin elastomer/plastomer component including a blend of at least three different polyolefin elastomers, each having different melt mass-flow rate (MFR), measured at 190° C. under a 2.16 kg load, in a range of about 3.0 to 25.0 g/10 min, (E) about 1 to 20 wt. % functional filler(s) including a polyolefin; (F) UV/heat stabilizer(s); (G) antioxidant(s); and (H) fire retardant(s), wt. % based on the total weight of the roofing membrane.

STABILIZATION OF MIXED CATALYST POLYETHYLENE

The present disclosure relates to systems including a ternary stabilization package that contains a first phosphite, a second phosphite and a primary antioxidant is used in combination with a polyethylene that is polymerized with a mixed catalyst system that contains two different types of catalysts. In some embodiments the stabilized polyethylene exhibits improved color performance. 2. The process of wherein said stabilizer package further comprises an acid neutralizer.3. The process of wherein said catalyst residues include i) from 1 to 15 ppm of titanium; ii) from 10 to 200 ppm of aluminum; and iii) from 10 to 250 ppm of magnesium.4. The process of wherein said first phosphite is 6-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propoxy]-2 claim 1 ,4 claim 1 ,8 claim 1 ,10-tetra-tert-butyldibenzo[d claim 1 ,f][1 claim 1 ,3 claim 1 ,2] dioxaphospepin (CAS Reg. No. 203255-81-6).5. The process of wherein said second phosphite is 2 claim 2 ,4 di-tertiary butyl phenyl phosphite.6. The process of wherein said first phosphite claim 1 , said second phosphite and said hindered phenolic are each added in an amount of from 100 to 2000 parts per million by weight based on the weight of said thermoplastic polyethylene product.7. The process of wherein said thermoplastic polyethylene product is a copolymer of ethylene and at least one olefin chosen from butene claim 1 , pentene claim 1 , hexene and octene.8. The process of wherein said thermoplastic polyethylene product has a density of from 0.880 to 0.960 g/cc and a melt index claim 1 , 12 claim 1 , as determined by ASTM D1238 of from 0.3 to 150 g/10 minutes.9. The process of wherein said melt processing conditions comprise a film extrusion at a temperature of from 200° C. to 320° C.10. The process of wherein said stabilizer formulation contains a hindered amine light stabilizer.12. The process of wherein said thermoplastic polyethylene product further comprises an acid neutralizer.13. The process of wherein said thermoplastic ...

Glass fiber composite material composition having improved impact strength

Disclosed is a glass fiber composite material composition having further improved compatibility between glass fibers and polypropylene and thus maximized interfacial adhesion between the resin and the glass fibers in a glass fiber composite material. The present invention provides a glass fiber composite material composition comprising: (A) 60-93% by weight of polypropylene; (B) 1-30% by weight of glass fiber sized with a silane-based compound; and (C) 1-10% by weight of a polypropylene resin modified with maleic anhydride and a methacryloxysilane-based compound.

Polyolefin blend composition

The instant invention provides a polyolefin blend composition suitable for extrusion coating or extrusion lamination applications, and multilayer structure and articles made therefrom. The polyolefin blend composition suitable for extrusion coating or extrusion lamination applications according to the present invention comprises (a) a linear low density polyethylene composition comprising: less than or equal to 100 percent by weight of the units derived from ethylene; less than 35 percent by weight of units derived from one or more ?-olefin comonomers; wherein said polyethylene composition has a density in the range of 0.890 to 0.940 g/cm3, a molecular weight distribution (Mw/Mn) in the range of 2.5 to 4.5, a melt index (I2) in the range of 4 to 30 g/10 minutes, a molecular weight distribution (Mz/Mw) in the range of from 2.0 to 3, vinyl unsaturation of less than 0.1 vinyls per one thousand carbon atoms present in the backbone of said composition, and a zero shear viscosity ratio (ZSVR) in the range from 1 to 1.2; and (b) less than 50 percent by weight of a low density polyethylene composition having a density in the range of 0.915 to 0.930 g/cm3, a melt index (I2) in the range of 0.1 to 10 g/10 minutes, and a molecular weight distribution (Mw/Mn) in the range of 6 to 15.

Thermoplastic elastomer composition

There is provided a thermoplastic elastomer composition from which a molded article excellent in flame retardancy, tensile properties, softness, and appearance can be obtained and by which a mold is hardly polluted during its molding. The thermoplastic elastomer composition includes at least one selected from an ethylene copolymer containing monomer units derived from ethylene and monomer units derived from at least one selected from propylene and α-olefins having 4 to 10 carbon atoms (component (A)) and a copolymer containing monomer units derived from an aromatic vinyl compound and monomer units derived from a conjugate diene compound (component (B)), a propylene polymer (component (C)), a phosphoric acid salt compound (component (D)), a phosphoric acid ester (component (E)), and a metal oxide (component (F)).

Process for the preparation of a composition comprising heterophasic propylene co-polymer and talc

The invention relates to a Process for the preparation of a composition comprising a heterophasic propylene copolymer and talc, 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% by mass of propylene and up to 30% by mass of α-olefin, based on the total mass of the propylene-based matrix, 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 %, wherein the composition has a desired melt flow index in the range of 1 to 200 dg/min as measured according to ISO1133 (2.16 kg/230° C.), wherein at least part of the talc is surface-modified and wherein the amount of talc in the composition is from about 0.5 to at most 5 wt % based on the heterophasic propylene copolymer, comprising the step of (a) melt-mixing the heterophasic propylene copolymer with the talc and a peroxide, wherein the amount of peroxide is chosen such that a composition comprising a heterophasic propylene copolymer and talc having the desired melt flow index is obtained.

POLYPROPYLENE RESIN COMPOSITION AND MOLDED PRODUCT THEREOF

A polypropylene resin composition includes: a base resin including a propylene homopolymer having a melt index of 20 g/10 min to 35 g/10 min measured at a temperature of 230° C. and under a load of 2.16 kg and an ethylene-propylene copolymer having a melt index of 90 g/10 min to 100 g/10 min measured at a temperature of 230° C. and under a load of 2.16 kg; a thermoplastic elastomer having a melt index of 10 g/10 min to 40 g/10 min measured at a temperature of 230° C. and under a load of 2.16 kg; an inorganic filler; and a sodium phosphate-based nucleating agent. 1. A polypropylene resin composition comprising:a base resin comprising a propylene homopolymer having a melt index of 20 g/10 min to 35 g/10 min measured at a temperature of 230° C. and under a load of 2.16 kg and an ethylene-propylene copolymer having a melt index of 90 g/10 min to 100 g/10 min measured at a temperature of 230° C. and under a load of 2.16 kg;a thermoplastic elastomer having a melt index of 10 g/10 min to 40 g/10 min measured at a temperature of 230° C. and under a load of 2.16 kg; an inorganic filler; anda sodium phosphate-based nucleating agent.2. The polypropylene resin composition of claim 1 , wherein the base resin comprises the propylene homopolymer to the ethylene-propylene copolymer at a weight ratio of 1:9 to 3:7.3. The polypropylene resin composition of claim 1 , wherein the polypropylene resin composition comprises the base resin in an amount of 50 wt % to 75 wt %.4. The polypropylene resin composition of claim 1 , wherein the propylene homopolymer has a pentad fraction (% mmmm) of 96% or more measured by 13C-NMR.5. The polypropylene resin composition of claim 1 , wherein the ethylene-propylene copolymer comprises ethylene in an amount of 3 wt % to 17 wt %.6. The polypropylene resin composition of claim 1 , wherein the thermoplastic elastomer comprises one selected from the group consisting of a copolymer of ethylene and an α-olefin having 4 to 12 carbon atoms claim 1 , a styrene ...

ETHYLENE-BASED POLYMER COMPOSITIONS WITH IMPROVED VISCOSITIES

The invention provides a composition comprising a first composition comprising the following: A) a first ethylene/α-olefin interpolymer that has a weight average molecular weight (Mw) greater than 90,000 g/mole and a MWD less than, or equal to 3, each as determined by conventional GPC; B) a second ethylene/α-olefin interpolymer; and wherein the first composition has a number average molecular weight (Mn) less than 10,000 g/mole, as determined by conventional GPC; and wherein the α-olefin of first interpolymer is the same as the α-olefin of the second interpolymer. 1. A composition comprising a first composition comprising the following:A) a first ethylene/α-olefin interpolymer that has a weight average molecular weight (Mw) greater than 90,000 g/mole and a MWD less than, or equal to 3, each as determined by conventional GPC;B) a second ethylene/α-olefin interpolymer; andwherein the first composition has a number average molecular weight (Mn) less than 10,000 g/mole as determined by conventional GPC; andwherein the α-olefin of first interpolymer is the same as the α-olefin of the second interpolymer.2. The composition of claim 1 , wherein the second ethylene/α-olefin interpolymer has a lower weight average molecular weight claim 1 , Mw claim 1 , as compared to the Mw of the first interpolymer.3. The composition of claim 1 , wherein the second ethylene/α-olefin interpolymer that has a weight average molecular weight less than 10 claim 1 ,000 g/mole and a MWD less than claim 1 , or equal to claim 1 , 3 claim 1 , each as determined from conventional GPC.4. The composition of claim 1 , wherein the first ethylene/α-olefin interpolymer and the second ethylene/α-olefin interpolymer are both ethylene/α-olefin/diene interpolymers.5. The composition of claim 1 , wherein the first interpolymer is an EPDM(1) claim 1 , and the second interpolymer is an EPDM(2).6. The composition of claim 1 , wherein components A and B comprises greater than claim 1 , or equal to claim 1 , 80 ...

Encapsulating material for solar cell and solar cell module

The encapsulating material for solar cell is an encapsulating material for solar cell including an ethylene/α-olefin copolymer and an organic peroxide having a one-minute half-life temperature in a range of 100° C. to 170° C. In addition, the complex viscosity of the encapsulating material for solar cell has the minimum value (η *1 ) of the complex viscosity at a temperature in a range of 100° C. to lower than 135° C., the minimum value (η *1 ) of the complex viscosity is in a range of 6.0×10 3 Pa·s to 4.0×10 4 Pa·s, the complex viscosity (η 2 ) of the encapsulating material for solar cell at 150° C. is in a range of 2.0×10 4 Pa·s to 1.0×10 5 Pa·s, and the content of the organic peroxide in the encapsulating material for solar cell is in a range of 0.1 parts by weight to 3 parts by weight with respect to 100 parts by weight of the ethylene/α-olefin copolymer.

COMPOSITION COMPRISING GLASS FIBER AND TWO OR MORE TYPES OF RESIN

Disclosed is a composition containing at least two types of resins and long glass fibers. The composition includes: a resin blend including at least two types of unit resins; long glass fibers having a length of 10 mm or more; and a rubber-based resin, wherein the long glass fibers and the rubber-based resin are used in an amount of 3-30 parts by weight and 0.5-25 parts by weight, respectively, based on 100 parts by weight of the resin blend. 1. A composition containing at least two types of resins and long glass fibers comprising:a resin blend comprising at least two types of unit resins;long glass fibers having a length of 10 mm or more; anda rubber-based resin,wherein the long glass fibers and the rubber-based resin are used in an amount of 3-30 parts by weight and 0.5-25 parts by weight, respectively, based on 100 parts by weight of the resin blend.2. The composition of claim 1 , further comprising 5-35 parts by weight of low-density polyethylene (LDPE).3. The composition of claim 1 , wherein the rubber-based resin is an olefinic resin.4. The composition of claim 2 , wherein the LDPE is incorporated to the rubber-based resin used in the form of pellets claim 2 , and then is incorporated to the composition.5. The composition of claim 1 , wherein the resin blend comprises waste polyethylene (PE) and waste polypropylene (PP).6. A plastic product comprising a composition claim 1 , the composition comprises:a resin blend comprising at least two types of unit resins;long glass fibers having a length of 10 mm or more; anda rubber-based resin,wherein the long glass fibers and the rubber-based resin are used in an amount of 3-30 parts by weight and 0.5-25 parts by weight, respectively, based on 100 parts by weight of the resin blend.7. A method for preparing a plastic product comprising:providing a composition, the composition comprises:a resin blend comprising at least two types of unit resins;long glass fibers having a length of 10 mm or more; anda rubber-based resin, ...

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.

Polypropylene films with improved optics and mechanical properties

Polypropylene mono-layer films produced with blown film or cast film technology comprising a blend of: a) 75.0 to 98.0 wt %, based on the blend, of a random propylene copolymer and b) 2.0 to 15.0 wt %, based on the blend, of an ethylene based plastomer having a density according to ISO 1183D of 0.915 g/cm 3 or below and an MFR 2 according to ISO 1133 (190° C.; 2.16 kg) in the range of 2.0 to 30 g/10 min, wherein the film has simultaneously improved optic properties as well as tear resistance compared to random propylene copolymer based films without ethylene based plastomer.

COVERING MATERIALS FOR ADHESIVE HOT-MELT GLUES

The invention relates to a nontacky film-forming polymer composition (cover material), and tacky hot melt adhesives in the form of pellets which are coated with the polymer composition and producible by coextruding the hot melt adhesive and the cover material. The film-forming composition comprises 5 to 40% by weight of at least one Fischer-Tropsch wax having a melting point of >95° C. and 30 to 70% by weight of at least one metallocene-catalyzed polyolefin having a softening point of >95° C. and a melt flow index (MFI) (230° C., 2.16 kg) of ≦1000 and ≧300 g/10 minutes. The invention further relates to suitable uses for such hot melt adhesives, methods for their use, and products containing these adhesives. 2. The polymer composition according to claim 1 , characterized in that the Fischer-Tropsch wax is a synthetic paraffin.3. The polymer composition according to claim 1 , characterized in that the plasticizer is selected from paraffin oils claim 1 , naphthenic oils claim 1 , and/or mineral oils claim 1 , and poly(iso)butylene.4. The polymer composition according to claim 1 , characterized in that the melting point of the polymer composition is ≦130° C.5. The polymer composition according to claim 1 , characterized in that the polymer composition claim 1 , based on its total weight claim 1 , comprises:a) 13 to 17% by weight, of at least one Fischer-Tropsch wax having a melting point >95° C.;b) 55 to 65% by weight, of at least one metallocene-catalyzed polypropylene, having a softening point >95° C. and a melt flow index (MFI) (230° C., 2.16 kg) of ≦1000 and ≧300 g/10 minutes;c) 22 to 27% by weight, of at least one metallocene-catalyzed polypropylene, having a softening point >85° C. and a melt flow index (MFI) (230° C., 2.16 kg) of >1000 g/10 minutes; andd) 0.5 to 2% by weight, of an antioxidant agent.6. A hot melt adhesive in the form of a pellet claim 1 , comprising:(1) a core made of a hot melt adhesive having a softening point of 65 to 140° C., containing at ...

Polyolefin composite material and method for producing the same

The present invention belongs to the field of polyolefin alloy preparation, and particularly relates to a polyolefin composite material in good form with adjustable composition and performances, produced by controlling a composite catalyst composed of Zieglar-Natta catalyst and metallocene catalyst to be catalytic by stage in the olefin polymerization reaction. This material is composed of propylene polymer and ethylene copolymer which is obtained by copolymerizing ethylene with alpha olefin or diolefin, wherein: the molar content of alpha olefin or diolefin in the ethylene copolymer is 0%~60%, and the ethylene copolymer is 3~80% by weight of the polyolefin composite material; the polyolefin composite material is in particle form, and the ethylene copolymer has a molecular weight distribution of 1ˆ¼6 and a glass transition temperature of -80~0°C; and the ethylene copolymer produced in the reaction is dispersed homogeneously in the propylene polymer particles to form the polyolefin composite material.

Polyolefin Composite Material And Method For Producing The Same

The present invention belongs to the field of polyolefin alloy preparation, and particularly relates to a polyolefin composite material in good form with adjustable composition and performances, produced by controlling a composite catalyst composed of Zieglar-Natta catalyst and metallocene catalyst to be catalytic by stage in the olefin polymerization reaction. This material is composed of propylene polymer and ethylene copolymer which is obtained by copolymerizing ethylene with alpha olefin or diolefin, wherein: the molar content of alpha olefin or diolefin in the ethylene copolymer is 0%˜60%, and the ethylene copolymer is 3˜80% by weight of the polyolefin composite material; the polyolefin composite material is in particle form, and the ethylene copolymer has a molecular weight distribution of 1˜6 and a glass transition temperature of −80˜0° C.; and the ethylene copolymer produced in the reaction is dispersed homogeneously in the propylene polymer particles to form the polyolefin composite material.

Multimodal polyethylene compositions and pipe made from same

A multimodal polyethylene composition having at least two polyethylene components, wherein each component has a molecular weight distribution of equal to or less than about 5, one component has a higher molecular weight than the other component, and the higher molecular weight component has an “a” parameter value of equal to or greater than about 0.35 when fitted to the Carreau-Yasuda equation with n=0.

Bimodal polyethylene composition and articles made therefrom

The invention relates to a polyethylene composition with a bimodal molecular weight distribution, methods for making the same, and articles made therefrom, such as high topload blow moldings and transmission and distribution pipes. The composition comprises a low-molecular-weight (LMW) ethylene homopolymer component and a homogeneous, high-molecular-weight (HMW) ethylene interpolymer component, wherein the LMW component is characterized as having a molecular weight distribution, MWD L , of less than about 8. In some embodiments, the HMW component is characterized by a reverse comonomer distribution.

Preparation of multimodal polyethylene

Disclosed is a polyethylene composition. The composition comprises single-site multimodal resin A and single-site multimodal resin B, wherein resin A differs from resin B in molecular weight, in monomeric composition, in density, in long chain branch concentration or distribution, or in combinations thereof. Disclosed is also a method for making the polyethylene composition. The method comprises polymerizing, in the presence of two or more single-site catalysts, ethylene or its mixture with a C 3 -C 10 α-olefin to form a first multimodal resin and continuing the polymerization in the presence of the same catalysts but in a different hydrogen concentration, in a different monomer composition, or at a different temperature to form a second multimodal resin.

Preparation of multimodal polyethylene

Disclosed is a polyethylene composition. The composition comprises single-site multimodal resin A and single-site multimodal resin B, wherein resin A differs from resin B in molecular weight, in monomeric composition, in density, in long chain branch concentration or distribution, or in combinations thereof. Disclosed is also a method for making the polyethylene composition. The method comprises polymerizing, in the presence of two or more single-site catalysts, ethylene or its mixture with a C 3 -C 10 α-olefin to form a first multimodal resin and continuing the polymerization in the presence of the same catalysts but in a different hydrogen concentration, in a different monomer composition, or at a different temperature to form a second multimodal resin.

Preparation of multimodal polyethylene

Disclosed is a polyethylene composition. The composition comprises single-site multimodal resin A and single-site multimodal resin B, wherein resin A differs from resin B in molecular weight, in monomeric composition, in density, in long chain branch concentration or distribution, or in combinations thereof. Disclosed is also a method for making the polyethylene composition. The method comprises polymerizing, in the presence of two or more single-site catalysts, ethylene or its mixture with a C 3 -C 10 α-olefin to form a first multimodal resin and continuing the polymerization in the presence of the same catalysts but in a different hydrogen concentration, in a different monomer composition, or at a different temperature to form a second multimodal resin.

聚烯烃复合材料及其制备方法

本发明属于制备聚烯烃合金领域，特别涉及通过控制由Zieglar-Natta催化剂和茂金属催化剂组成的复合催化剂在烯烃聚合反应中分步发挥作用，从而得到既具有良好形态又具有组成、性能可调的聚烯烃复合材料。该材料由丙烯聚合物和乙烯共聚物组成，所述的乙烯共聚物是乙烯与α烯烃或双烯烃共聚得到的，其中α烯烃或双烯烃在乙烯共聚物中的摩尔含量为0%～60%，乙烯共聚物占聚烯烃复合材料总重量的3～80%；所述的聚烯烃复合材料具有粒子形态，乙烯共聚物分子量分布为1～6，玻璃化转变温度为-80～0℃；在反应中生成的乙烯共聚物均匀分散在丙烯聚合物粒子中形成聚烯烃复合材料。

Enhanced ESCR of HDPE resins

Disclosed are polyethylene (“PE”) compositions, articles comprising PE compositions, and methods of making blended PE compositions, wherein the blended composition comprises from about 80 to about 95 weight % of a first PE and from about 5 to about 20 weight % of a second PE. The first PE has a density greater than or equal to about 0.945 g/cc and a MWD greater than about 5. The second PE has a density less than about 0.945 g/cc, a melt index less than about 0.70 g/10 minutes and less than or equal to the melt index of the first PE, a MWD ranging from about 1 to about 5, a weight average molecular weight less than about 400,000, and a CDBI greater than about 50%. The PE composition has an ESCR greater than the ESCR of the first PE.

Dual catalyst system for producing high density polyethylenes with long chain branching

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

Dual catalyst system for producing high density polyethylenes with long chain branching

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

ethylene / α-olefin interpolymer

Catalytic olefin block copolymers with controlled block sequence distribution and at least one low crystallinity hard block

Thermoplastic olefin composition with improved heat distortion temperature

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

Polymer films having improved heat sealing properties

Metallocene-catalyzed polyethylene

A metallocene-catalyzed polyethylene resin having a multimodal molecular weight and composition distribution, comprising from 45% by weight to 75% by weight of a low density fraction, said fraction having a density below or equal to 0.918 g/cm3 as measured following the method of standard test ISO 1 183 at a temperature of 23 °C, wherein the density of the polyethylene resin is from 0.920 to 0.945 g/cm3, wherein the M w/M n of the polyethylene is of from 2.8 to 6, wherein the melt index MI2 of the polyethylene resin of from 0.1 to 5 g/10min measured following the method of standard test ISO 1 133 Condition D at a temperature of 190 °C and under a load of 2.16 kg; and wherein the composition distribution breadth index (CDBI) of the polyethylene resin is below 70%, as analyzed by quench TREF (temperature rising elution fractionation) analysis.

Polyethylene molding composition for producing blown films having improved processability

Metallocene-catalyzed polyethylene

A metallocene-catalyzed polyethylene resin having a multimodal molecular weight and composition distribution, comprising from 45% by weight to 75% by weight of a low density fraction, said fraction having a density below or equal to 918 g/cm 3 as measured following the method of standard test ISO 1183 at a temperature of 23° C., wherein the density of the polyethylene resin is from 0.920 to 0.945 g/cm 3 , wherein the M w /M n of the polyethylene is of from 2.8 to 6, wherein the melt index MI2 of the polyethylene resin of from 0.1 to 5 g/10 min measured following the method of standard test ISO 1133 Condition D at a temperature of 190° C. and under a load of 2.16 kg; and wherein the composition distribution breadth index (CDBI) of the polyethylene resin is below 70%, as analyzed by quench TREF (temperature rising elution fractionation) analysis.

Film

A film, e.g. a monolayer film or multilayer, or a polymer composition comprising at least one single site produced LLDPE (mLLDPE) and an ethylene acrylate copolymer.

Bimodal polyethylene composition and articles made therefrom

본 발명은 바이모드 분자량 분포의 폴리에틸렌 조성물 및 그로부터 제조된 물품, 예컨대 고 상부하중 블로우 성형물과 전송 및 분배 파이프에 관한 것이다. 이 조성물은 저분자량(LMW) 에틸렌 단일중합체 성분 및 균질한, 고분자량(HMW) 에틸렌 혼성중합체 성분을 포함하며, 여기에서 LMW 성분은 약 8 미만의 분자량 분포, MWD L 를 갖는 것을 특징으로 한다. 이 조성물은 바이모드 분자량 분포와 -20℃ 미만의 연성-취성 전이 온도, T db 를 갖는 것을 특징으로 한다. 특정 실시태양에 있어서, HMW 성분은 역 공단량체 분포를 특징으로 한다. The present invention relates to polyethylene compositions of bimodal molecular weight distribution and articles made therefrom, such as high top load blow moldings and transmission and distribution pipes. The composition comprises a low molecular weight (LMW) ethylene homopolymer component and a homogeneous, high molecular weight (HMW) ethylene interpolymer component, wherein the LMW component is characterized by having a molecular weight distribution of less than about 8, MWD L. The composition is characterized by having a bimodal molecular weight distribution and a ductile-brittle transition temperature below T20, T db . In certain embodiments, the HMW component is characterized by an inverse comonomer distribution. 바이모드, 분자량 분포, 폴리에틸렌 조성물, 파이프 Bimodal, molecular weight distribution, polyethylene composition, pipe

Blends of polypropylene impact copolymer with other polymers

It has been discovered that the properties of sheet or film materials of broad molecular weight distribution ethylene/propylene rubber impact-modified heterophasic copolymer (ICP) can be improved by blending the ICP with a second polyolefin. The second polyolefin may be a syndiotactic polypropylene (sPP), a random copolymer (RCP) of propylene and comonomer (e.g. ethylene and/or butene) made using a Ziegler-Natta or metallocene catalyst, medium density polyethylene (MDPE), linear low density polyethylene (LLDPE), or low crystalline copolymer of propylene/α-olefin. Improvements include, but are not necessarily limited to, reduced motor amps, lower secant modulus, increased dart drop strength, increased gloss, reduced haze, increased elongation to yield, elimination of stress whitening, improved puncture resistance, and decreased seal initiation temperature. This sheet of film materials may be co-extruded with other resins or laminated with other materials after extrusion.

Rigid renewable polyester compositions having a high impact strength and tensile elongation

A thermoplastic composition that contains a rigid renewable polyester and a polymeric toughening additive is provided. The toughening additive can be dispersed as discrete physical domains within a continuous matrix of the renewable polyester. An increase in the deformation force and elongational strain causes debonding to occur in the renewable polyester matrix at those areas located adjacent to the discrete domains. This can result in the formation of a plurality of voids adjacent to the discrete domains that can help to dissipate energy under load and increase impact strength. To even further increase the ability of the composition to dissipate energy in this manner, an interphase modifier may be employed that reduces the degree of friction between the toughening additive and renewable polyester and thus enhances the degree and uniformity of debonding.

Rigid renewable polyester compositions having a high impact strength and tensile elongation

A thermoplastic composition that contains a rigid renewable polyester and a polymeric toughening additive is provided. The toughening additive can be dispersed as discrete physical domains within a continuous matrix of the renewable polyester. An increase in the deformation force and elongational strain causes debonding to occur in the renewable polyester matrix at those areas located adjacent to the discrete domains. This can result in the formation of a plurality of voids adjacent to the discrete domains that can help to dissipate energy under load and increase impact strength. To even further increase the ability of the composition to dissipate energy in this manner, an interphase modifier may be employed that reduces the degree of friction between the toughening additive and renewable polyester and thus enhances the degree and uniformity of debonding.

Polyolefin blends and pipe

A polyolefin blend comprising: (a) from 30 to 80 weight % of a low molecular weight copolymer comprising from 85 to 100 weight % of ethylene and from 15 to 0 weight % of one or more C 4-8 alpha olefins having a density from 0.953 to 0.965 g/cm 3 and a melt flow rate (2.16 kg 190° C.) from 0.1 to 20.0 g/10 minutes; and (b) from 70 to 20 weight % of a high molecular weight copolymer comprising from 85 to 99.9 weight % of ethylene and from 15 to 0.1 weight % of one or more C 4-8 alpha olefins having a density from 0.915 to 0.940 g/cm 3 and a melt flow rate (21.6 kg 190° C.) from 0.05 to 5.0 g/l 0 minutes, said copolymer being prepared with a single site catalyst is useful in the preparation of pipe.

Medium density polyethylene compositions

An ethylene alpha-olefin copolymer having (a) a density of from about 0.910 g/cc to about 0.940 g/cc; (b) a weight average molecular weight of from about 150,000 g/mol to about 300,000 g/mol; and (c) a melt index at a load of 2.16 kg of from about 0.01 dg/10 min. to about 0.5 dg/min.; wherein a 1 mil blown film formed from the polymer composition is characterized by (i) a Dart Impact strength greater than about 175 g/mil; (ii) an Elmendorf machine direction tear strength greater than about 20 g/mil; and (iii) an Elmendorf transverse direction tear strength greater than about 475 g/mil.

Multimodal polyethylene compositions and pipe made from same

A multimodal polyethylene composition having at least two polyethylene components, wherein each component has a molecular weight distribution of equal to or less than about 5, one component has a higher molecular weight than the other component, and the higher molecular weight component has an “a” parameter value of equal to or greater than about 0.35 when fitted to the Carreau-Yasuda equation with n=0.

Enhanced ESCR of HDPE resins

Disclosed are polyethylene (“PE”) compositions, articles comprising PE compositions, and methods of making blended PE compositions, wherein the blended composition comprises from about 80 to about 95 weight % of a first PE and from about 5 to about 20 weight % of a second PE. The first PE has a density greater than or equal to about 0.945 g/cc and a MWD greater than about 5. The second PE has a density less than about 0.945 g/cc, a melt index less than about 0.70 g/10 minutes and less than or equal to the melt index of the first PE, a MWD ranging from about 1 to about 5, a weight average molecular weight less than about 400,000, and a CDBI greater than about 50%. The PE composition has an ESCR greater than the ESCR of the first PE.

Polymer films having improved heat sealing properties

A polymer composition comprising an ethylene alpha-olefin copolymer, wherein the polymer composition is characterized as having (a) a density in the range of from greater than about 0.910 g/cc to about 0.930 g/cc, as determined according to ASTM D1505; (b) a melt index in the range of from greater than about 0.5 g/10 min to about 3 g/10 min, as determined by ASTM D1238, Condition 190 C/2.16 kg; (c) a molecular weight distribution of from about 3.4 to about 12, as determined by gel permeation chromatography (GPC); (d) a weight average molecular weight of from greater than about 85 kg/mol to about 160 kg/mol, as determined by gel permeation chromatography (GPC); and (e) a z-average molecular weight of from greater than about 210 kg/mol to about 500 kg/mol, as determined by gel permeation chromatography (GPC).

Novel medium density polyethylene compositions

An ethylene alpha-olefin copolymer having (a) a density of from about 0.910 g/cc to about 0.940 g/cc; (b) a weight average molecular weight of from about 150,000 g/mol to about 300,000 g/mol; and (c) a melt index at a load of 2.16 kg of from about 0.01 dg/10 min. to about 0.5 dg/min.; wherein a 1 mil blown film formed from the polymer composition is characterized by (i) a Dart Impact strength greater than about 175 g/mil; (ii) an Elmendorf machine direction tear strength greater than about 20 g/mil; and (iii) an Elmendorf transverse direction tear strength greater than about 475 g/mil.

Medium density polyethylene compositions

An ethylene alpha-olefin copolymer having (a) a density of from about 0.910 g/cc to about 0.940 g/cc; (b) a weight average molecular weight of from about 150,000 g/mol to about 300,000 g/mol; and (c) a melt index at a load of 2.16 kg of from about 0.01 dg/10 min. to about 0.5 dg/min.; wherein a 1 mil blown film formed from the polymer composition is characterized by (i) a Dart Impact strength greater than about 175 g/mil; (ii) an Elmendorf machine direction tear strength greater than about 20 g/mil; and (iii) an Elmendorf transverse direction tear strength greater than about 475 g/mil.

Polymer films having improved heat sealing properties

A polymer composition comprising an ethylene alpha-olefin copolymer, wherein the polymer composition is characterized as having (a) a density in the range of from greater than about 0.910 g/cc to about 0.930 g/cc, as determined according to ASTM D1505; (b) a melt index in the range of from greater than about 0.5 g/10 min to about 3 g/10 min, as determined by ASTM D1238, Condition 190° C./2.16 kg; (c) a molecular weight distribution of from about 3.4 to about 12, as determined by gel permeation chromatography (GPC); (d) a weight average molecular weight of from greater than about 85 kg/mol to about 160 kg/mol, as determined by gel permeation chromatography (GPC); and (e) a z-average molecular weight of from greater than about 210 kg/mol to about 500 kg/mol, as determined by gel permeation chromatography (GPC).

Polymer films having improved heat sealing properties

A polymer composition comprising an ethylene alpha-olefin copolymer, wherein the polymer composition is characterized as having (a) a density in the range of from greater than about 0.910 g/cc to about 0.930 g/cc, as determined according to ASTM D1505; (b) a melt index in the range of from greater than about 0.5 g/10 min to about 3 g/10 min, as determined by ASTM D1238, Condition 190° C./2.16 kg; (c) a molecular weight distribution of from about 3.4 to about 12, as determined by gel permeation chromatography (GPC); (d) a weight average molecular weight of from greater than about 85 kg/mol to about 160 kg/mol, as determined by gel permeation chromatography (GPC); and (e) a z-average molecular weight of from greater than about 210 kg/mol to about 500 kg/mol, as determined by gel permeation chromatography (GPC).

Medium density polyethylene compositions

An ethylene alpha-olefin copolymer having (a) a density of from about 0.910 g/cc to about 0.940 g/cc; (b) a weight average molecular weight of from about 150,000 g/mol to about 300,000 g/mol; and (c) a melt index at a load of 2.16 kg of from about 0.01 dg/10 min. to about 0.5 dg/min.; wherein a 1 mil blown film formed from the polymer composition is characterized by (i) a Dart Impact strength greater than about 175 g/mil; (ii) an Elmendorf machine direction tear strength greater than about 20 g/mil; and (iii) an Elmendorf transverse direction tear strength greater than about 475 g/mil.

Rheology modified polyethylene compositions

A composition, comprising the reaction product of: (a) a first composition comprising a polyethylene component prepared in the presence of a chromium-based catalyst system, and (b) a second composition comprising a coupling amount of at least one polysulfonyl azide.

Multimodal polyolefin resin and molded product prepared therefrom

A multimodal polyolefin resin having excellent characteristics such as moldability, mechanical strength, external appearance and the like, and a polyolefin resin molded product are disclosed. The polyolefin resin satisfies all of the following requirements (1) to (5): (1) density (d): 0.934-0.963 g/cm 3 ; (2) melt flow index (MIE, 190 ℃, 2.16 kg load): 0.01-1.0 g/10 min; (3) the ratio of a weight average molecular weight (Mw) and a number average molecular weight (Mn) (Mw/Mn, molecular weight distribution (MWD)) measured by gel permeation chromatography (GPC): 12-60; (4) there are two or more peaks when a molecular weight is measured by GPC; and (5) the content of a polyolefin having a weight average molecular weight (Mw) of 10,000 or less exceeds 20 wt%, and the content of a polyolefin having a weight average molecular weight (Mw) of 1,000,000 or more exceeds 1.5 wt% when a molecular weight is measured by GPC.

Multimodal polyolefin resin and molded product prepared therefrom

Multimodal polyolefin resin having excellent characteristics such as moldability, mechanical strength, external appearance and a polyolefin resin molded product are disclosed. The polyolefin resin satisfies all requirements of following (1) to (5), (1) density (d): 0.934 to 0.963 g/cm 3 , (2) melt flow index (MIE, 190° C., 2.16 kg load condition): 0.01 to 1.0 g/10 minutes, (3) ratio of weight-average molecular weight (Mw) and number-average molecular weight (Mn) measured by Gel Permeation Chromatography (GPC) (Mw/Mn, Molecular weight distribution (MWD)): 12 to 60, (4) at least two peaks appear when the molecular weight of the polyolefin resin is measured with GPC, and (5) amount of polyolefin having Mw of 10,000 or less exceeds 15 weight % and amount of polyolefin having Mw of 1,000,000 or more exceeds 1.5 weight %, when the molecular weight of the polyolefin resin is measured with GPC.

Polyolefin blends and pipe

A polyolefin blend comprising: (a) from 30 to 80 weight % of a low molecular weight copolymer comprising from 85 to 100 weight % of ethylene and from 15 to 0 weight % of one or more C 4-8 alpha olefins having a density from 0.953 to 0.965 g/cm 3 and a melt flow rate (2.16 kg 190° C.) from 0.1 to 20.0 g/10 minutes; and (b) from 70 to 20 weight % of a high molecular weight copolymer comprising from 85 to 99.9 weight % of ethylene and from 15 to 0.1 weight % of one or more C 4-8 alpha olefins having a density from 0.915 to 0.940 g/cm 3 and a melt flow rate (21.6 kg 190° C.) from 0.05 to 5.0 g/l 0 minutes, said copolymer being prepared with a single site catalyst is useful in the preparation of pipe.

Plastic toughened plastics

Plastic toughened plastics include a polymer composition having a polypropylene component and a second polymer component. The polypropylene component is present in an amount from about 50 to about 95 weight percent based on the total weight of the blend. The second polymer component is present in an amount from about 5 to about 50 weight percent based on the total weight of the blend, is a BOCD or BCD blend of at least two ssPE components, and has an overall density greater than about 0.90 g/cm 3 . Optionally, the plastic toughened plastics include one or more third polymer component selected from propylene-olefin elastomers and ethylene-propylene rubbers, which are present in an amount from about 1 to about 50 weight percent, based on the total weight of the blend.

Polyolefin blend composition

The instant invention provides a polyolefin blend composition suitable for extrusion coating or extrusion lamination applications, and multilayer structure and articles made therefrom. The polyolefin blend composition suitable for extrusion coating or extrusion lamination applications according to the present invention comprises (a) a linear low density polyethylene composition comprising: less than or equal to 100 percent by weight of the units derived from ethylene; less than 35 percent by weight of units derived from one or more ?-olefin comonomers; wherein said polyethylene composition has a density in the range of 0.890 to 0.940 g/cm3, a molecular weight distribution (Mw/Mn) in the range of 2.5 to 4.5, a melt index (I2) in the range of 4 to 30 g/10 minutes, a molecular weight distribution (Mz/Mw) in the range of from 2.0 to 3, vinyl unsaturation of less than 0.1 vinyls per one thousand carbon atoms present in the backbone of said composition, and a zero shear viscosity ratio (ZSVR) in the range from 1 to 1.2; and (b) less than 50 percent by weight of a low density polyethylene composition having a density in the range of 0.915 to 0.930 g/cm3, a melt index (I2) in the range of 0.1 to 10 g/10 minutes, and a molecular weight distribution (Mw/Mn) in the range of 6 to 15.

A polyethylene composition suitable for film applications and films made therfrom

The instant invention provides a polyethylene composition suitable for film applications and film made therefrom. The linear low density polyethylene composition suitable for film applications according to the present invention comprises: less than or equal to 100 percent by weight of the units derived from ethylene; and less than 35 percent by weight of units derived from one or more a-olefin comonomers; wherein said linear low density polyethylene composition has a density in the range of from 0.890 to 0.915 g/cm 3 , a molecular weight distribution (M w /M n ) in the range of from 2.5 to 4.5, a melt index (I 2 ) in the range of from 2 to 10 g/10 minutes, a molecular weight distribution (M z /M w ) in the range of from 2.2 to 3, vinyl unsaturation of less than 0.1 vinyls per one thousand carbon atoms present in the backbone of said composition, and a zero shear viscosity ratio (ZSVR) in the range from 1 to 1.2.

Polymer composition and a process for production of the polymer composition

A polyethylene composition comprising a base resin is disclosed herein. The base resin includes an ethylene homo- or copolymer fraction (A1), and an ethylene homo- or copolymer fraction (A2). Fraction (A1) has a lower weight average molecular weight than fraction (A2). The base resin has a melt flow rate MFR 21 of equal to or less than 8.0 g/10 min and a density of 930 to 950 kg/m3. The polyethylene composition has a melt flow rate MFR 5 of 0.01 to 0.3 g/10 min, a flow rate ratio FRR 21/5 of equal to or more than 20 and a ratio of the weight average molecular weight and the number average molecular weight (M w /M n ) of equal to or less than 30. Also the polyethylene composition has a tensile modulus of less than 1000 MPa. Also a process for the production of a polyethylene composition comprising polyethylene base resin is disclosed herein.

Polyolefin blends and pipe

A polyolefin blend comprising: (a) from 30 to 80 weight % of a low molecular weight copolymer comprising from 85 to 100 weight % of ethylene and from 15 to 0 weight % of one or more C 4-8 alpha olefins having a density from 0.953 to 0.965 g/cm 3 and a melt flow rate (2.16 kg 190° C.) from 0.1 to 20.0 g/10 minutes; and (b) from 70 to 20 weight % of a high molecular weight copolymer comprising from 85 to 99.9 weight % of ethylene and from 15 to 0.1 weight % of one or more C 4-8 alpha olefins having a density from 0.915 to 0.940 g/cm 3 and a melt flow rate (21.6 kg 190° C.) from 0.05 to 5.0 g/10 minutes, said copolymer being prepared with a single site catalyst is useful in the preparation of pipe.

Plastic toughened plastics

Plastic toughened plastics include a polymer composition having a polypropylene component and a second polymer component. The polypropylene component is present in an amount from about 50 to about 95 weight percent based on the total weight of the blend. The second polymer component is present in an amount from about 5 to about 50 weight percent based on the total weight of the blend, is a BOCD or BCD blend of at least two ssPE components, and has an overall density greater than about 0.90 g/cm 3 . Optionally, the plastic toughened plastics include one or more third polymer component selected from propylene-olefin elastomers and ethylene-propylene rubbers, which are present in an amount from about 1 to about 50 weight percent, based on the total weight of the blend.

Polymer composition and a process for production of the polymer composition

A polyethylene composition comprising a base resin is disclosed herein. The base resin includes an ethylene homo- or copolymer fraction (A1), and an ethylene homo- or copolymer fraction (A2). Fraction (A1) has a lower weight average molecular weight than fraction (A2). The base resin has a melt flow rate MFR21 of equal to or less than 8.0 g/10 min and a density of 930 to 950 kg/m3. The polyethylene composition has a melt flow rate MFR5 of 0.01 to 0.3 g/10 min, a flow rate ratio FRR21/5 of equal to or more than 20 and a ratio of the weight average molecular weight and the number average molecular weight (Mw/Mn) of equal to or less than 30. Also the polyethylene composition has a tensile modulus of less than 1000 MPa. Also a process for the production of a polyethylene composition comprising polyethylene base resin is disclosed herein.

Compositions comprising thermoplastic starch

The invention relates to a composition comprising very low density polyethylene having a density of less than 0.905g/cm 3 , ethylene acrylic acid copolymer and thermoplastic starch and/or the constituent components thereof.

Polymer compositions with improved retention of properties under mechanical and thermal stresses

The invention provides a composition comprising the following: A) an ethylene/α-olefin/diene interpolymer; B) an ethylene/α-olefin copolymer with a Mooney Viscosity [ML(1+4) at 125°C] greater than 40; and C) a peroxide; and wherein the α-olefin of the ethylene/α-olefin copolymer of component B comprises at least four carbon atoms; and wherein component A is present in an amount from 50 to 95 weight percent, based on the sum weight of components A and B.

Films containing functional ethylene-based polymer compositions

The invention provides a film comprising at least two layers, a first layer and a second layer; and wherein the first layer is formed from a first composition comprising a polyester, a polylactic acid, or a combination thereof; and wherein the second layer is formed from a second composition comprising at least the following: A) functionalized ethylene-based polymer, and B) ethylene/alpha-olefin interpolymer; and wherein the first layer is adjacent to the second layer.

Ethylene copolymers, methods for their production, and use

Provided is an ethylene copolymer having 40 wt.% to 70 wt.% of units derived from ethylene and at least 30 wt.% of units derived from at least one α-olefm having 3 to 20 carbon atoms and has the following properties: (a) a weight-average molecular weight (Mw), as measured by GPC, in the range of about 50,000 to about 200,000 g/mol; (b) a melting point (Tm) in 0C, as measured by DSC, that satisfies the relation: Tm > 3.4 x E - 180 where E is the weight % of units derived from ethylene in the copolymer; (c) a ratio of MwMn of about 1.8 to about 2.5; (d) a content of Group 4 metals of no more than 5 ppm; and (e) a ratio of wt ppm Group 4 metals/ wt ppm Group 5 metals of at least 3. Also provided are methods for making an ethylene copolymer and compositions comprising an ethylene copolymer.

Thermoplastic polyolefin blends

This invention relates to a blend composition comprising: 1) a linear ethylene containing polymer, such as a LLDPE, a HDPE or the like; and at least 1 weight percent of an in-reactor polymer blend comprising: (a) a first ethylene containing polymer having a density of greater than 0.90 g/cm 3 and a M w of more than 20,000 g/mol; and (b) a second ethylene containing polymer having a density of less than 0.90 g/cm 3 , wherein the polymer blend has a T m of at least 90°C (DSC second melt), a density of less than 0.92 g/cm 3 , and the densities of the first and second polymers differ by at least 1%. Alternately the in-reactor polymer blend comprises: (a) a first ethylene polymer comprising 90 wt% to 100 wt% ethylene and from 0 wt% to less than 10 wt% comonomer, said first ethylene polymer component having density of greater than 0.920 g/cm 3 , an M w of 20,000 g/mol or more; and (b) a second ethylene polymer comprising from 70 wt% to 90 wt% ethylene and 30 wt% to 10 wt% comonomer, said second ethylene polymer having a density of 0.910 g/cm 3 or less, wherein the in-reactor polymer blend has one or more of the following characteristics: (a) at least 78 wt% ethylene; (b) a T m of at least 100°C over a density ranging from 0.84 to 0.92 g/cm 3 ; (c) a elongation at break of 300% or more; (d) a strain hardening ratio M300/M100 of at least 1.2; (e) a ratio of complex viscosity at 0.01 rad/s to the complex viscosity at 100 rad/s of at least 30; and (f) a shear thinning index of less than -0.2.

Modifiers for thermoplastic alloys and alloys produced using such modifiers

Non cross-linked modifiers for thermoplastic alloys comprising from 20 to 80% by weight based on the modifier of an interpolymer of ethylene and an alpha-olefin having from 4 to 12 carbon atoms grafted with an acid functionality, preferably maleic anhydride, having a Melt Index of from 0.3 to 100 and a density of 0.85 to 0.91 prior to being grafted and from 80 to 20% by weight of an ungrafted diene containing interpolymer derived from ethylene and an alpha-olefin having from 3 to 12 carbon atoms and an amount of a cross-linking component effective to provide cross-linking during subsequent melt blending with a condensation polymer having a melting point of at least 150° C.

Rheology modified relatively high melt strength polyethlene compositions and methods of making pipes, films, sheets, and blow molded articles

A polymer composition comprises a low-molecular-weight (LMW) ethylene polymer component and a high-molecular-weight (HMW) ethylene polymer component coupled with a polysulfonyl azide. Preferably, the LMW polyethylene component and the HMW polyethylene component co-crystallize in the composition such that it exhibits a single or substantially single peak in a lamella thickness distribution (LTD) curve. The ethylene polymer for the LMW and the HMW polyethylene components can be either homopolymer or ethylene copolymer. Preferably, both components are an ethylene copolymer of the same, or different, composition (that is, with the same or different comonomers). A method of making a pipe that includes selecting a polymer composition having a substantially single peak in the LTD curve is described. Compositions comprising a chromium-catalyzed ethylene polymer, coupled with a polysulfonyl azide are also described herein.

乙烯类聚合物组合物和由其得到的成形体

本发明提供成形性特别优异并且机械强度优异的乙烯类聚合物组合物、以及由该乙烯类聚合物得到的成形体、和抗粘连性特别优异的膜和多层膜。本发明的乙烯类聚合物组合物(γ)含有：特定的乙烯类聚合物(α)，该乙烯类聚合物(α)为乙烯与碳原子数4以上10以下的α‑烯烃的共聚物；和另一种乙烯类聚合物(β)，该乙烯类聚合物(β)为乙烯与碳原子数4以上10以下的α‑烯烃的共聚物，上述乙烯类聚合物(α)的重量分率[Wα]为0.1以上0.9以下，上述乙烯类聚合物(β)的重量分率[Wβ]为0.1以上0.9以下(Wα与Wβ的合计为1.0)。

太陽電池封止材および太陽電池モジュール

　本発明の太陽電池封止材は、エチレン・α－オレフィン共重合体を含み、燃焼法およびイオンクロマトグラフ法により定量される、上記エチレン・α－オレフィン共重合体中のフッ素元素の含有量が３０ｐｐｍ以下である。

Ethylene copolymers, methods for their production, and use

Provided herein are ethylene copolymers, methods for making such copolymers, and compositions made from such copolymers. The ethylene copolymers have 70 wt. % to 85 wt. % of units derived from ethylene and at least 12 wt. % of units derived from at least one α-olefin having 3 to 20 carbon atoms. The copolymers preferably further have a weight-average molecular weight (Mw) ranging from about 50,000 to about 200,000 g/mol, melting point of at least 100° C., ratio of Mw/Mn of about 1.5 to about 3.5, a content of group 4 metals of no more than 25 ppm, and a ratio of wt ppm Group 4 metals/wt ppm Group 5 metals of at least 3. Such copolymers may be particularly useful as viscosity modifiers for lubricating oil compositions.

Lubricating oil compositions and method for making them

Provided are ethylene propylene copolymers compositions thereof and methods for making the same. The composition may include an ethylene copolymer, comprising 40 wt % to 70 wt % of units derived from ethylene, and at least 30 wt % of units derived from at least one α-olefin having 3 to 20 carbon atoms. The composition can have a melting point (Tm) in ° C., as measured by DSC, that satisfies the relation: Tm>3.4×E−180, where E is the weight % of units derived from ethylene in the copolymer. The composition can also have a Mw/Mn ratio of about 1.5 to about 3.5. The composition can further have a content of Group 4 metals derived from a catalyst of 25 ppm or less.

Lubricating oil compositions and method for making them

Provided are ethylene propylene copolymers, compositions and methods for making the same. The composition may include an ethylene copolymer, comprising 40 wt% to 70 wt% of units derived from ethylene, and at least 30 wt% of units derived from at least one α- olefin having 3 to 20 carbon atoms. The composition can have a melting point (Tm) in 0C, as measured by DSC, that satisfies the relation: Tm > 3.4 x E - 180, where E is the weight % of units derived from ethylene in the copolymer. The composition can also have a Mw/Mn ratio of about 1.5 to about 3.5. The composition can further have a content of Group 4 metals derived from a catalyst of 25 ppm or less.

Ethylene copolymers, methods for their production, and use

Provided herein are ethylene copolymers, methods for making such copolymers, and compositions made from such copolymers. The ethylene copolymers have 70 wt. % to 85 wt. % of units derived from ethylene and at least 12 wt. % of units derived from at least one α-olefin having 3 to 20 carbon atoms. The copolymers preferably further have a weight-average molecular weight (Mw) ranging from about 50,000 to about 200,000 g/mol, melting point of at least 100° C., ratio of Mw/Mn of about 1.5 to about 3.5, a content of group 4 metals of no more than 25 ppm, and a ratio of wt ppm Group 4 metals/wt ppm Group 5 metals of at least 3. Such copolymers may be particularly useful as viscosity modifiers for lubricating oil compositions.

Ethylene/1-hexene copolymer having excellent processability and mechanical properties

The ethylene/1-hexene copolymer according to the present invention has excellent processability and mechanical properties, and thus can be applied to various fields such as food containers.

Bimodal polyethylene composition and articles made therefrom

The invention relates to a polyethylene composition with a bimodal molecular weight distribution and articles made therefrom, such as high topload blow moldings and transmission and distribution pipes. The composition comprises a low-molecular-weight (LMW) ethylene homopolymer component and a homogeneous, high-molecular-weight (HMW) ethylene interpolymer component, wherein the LMW component is characterized as having a molecular weight distribution, MWD L , of less than about 8. The composition is characterized as having a bimodal molecular weight distribution, and a ductile-brittle transition temperature, T db , of less than −20° C. In some embodiments, the HMW component is characterized by a reverse comonomer distribution.

Polyethylene and polypropylene blends for liquid packaging films

There is disclosed a flowable material packaging film comprising at least a resin blend of (a) from about 33 wt % to about 80 wt % of at least one ethylene-C 4 to C 10 -α-olefin interpolymer having a melt index of from 0.4 to 1.5 g/10 min (190° C., 2.15 kg), a density of from 0.900 to 0.916 g/cc; and (b) from about 67 wt % to about 20 wt % of at least one heterogeneous interpolymer of propylene with ethylene or ethylene and butene comprising from about 71 mol % to about 86 mol % propylene and from about 29 mol % to about 14 mol % ethylene or ethylene and butene, the interpolymer having an overall weight average molecular weight (M W ) of at least about 400,000, a xylene soluble phase of not less than 30% (wt), with the xylene soluble phase having a M W of at least about 275,000 and said heterogeneous interpolymer of polypropylene has a density of from 0.875 to 0.91 g/cc; and the film has a Hot Tack Initiation Temperature in the range of from about 100° C. to about 140° C. and a Hot Tack Strength of not more than about 5 N/inch in the temperature range of about 100° C. to about 150° C., when fabricated at a thickness of about 50 microns and tested using a JB Instrument Hot Tack Tester set at a 0.5 second dwell, 0.2 second delay time, 40 psi seal bar pressure and 250 mm/second peel rate; and the film has a flex crack resistance such that it develops 5 or less pinholes per 300 cm 2 in 10,000 cycles of Gelbo Flex testing as measured according to ASTM F392. The film exhibits flex crack resistance and thus is useful in the manufacture of pouches and bags made from such films. Processes for making such pouches and bags which may include aseptic conditions are also described.

Machine direction only oriented films

This invention relates to a facestock comprising a polymeric film, and a holographic layer on a surface of the facestock, wherein the film is conformable. The invention also relates to label stocks prepared from the facestocks, and labels made therefrom. The labels are useful on squeezable containers. An advantage of these labels is that there is little or no cracking or flaking of the holographic image.

Elastic film containing a renewable starch polymer

A film that contains a thermoplastic composition having a substantial portion of a renewable, natural starch polymer, and yet is elastic and exhibits good strength properties, is provided. Although starch is normally chemically incompatible with most elastomeric polymers due to their different polarities, the present inventors have discovered that phase separation may be minimized by selectively controlling certain aspects of the film, such as the nature of the elastomeric polymer and the starch polymer, and other film components, the relative amount of the film components, and the process for making the film.

Rigid renewable polyester compositions having a high impact strength and tensile elongation

A thermoplastic composition that contains a rigid renewable polyester and a polymeric toughening additive is provided. The toughening additive can be dispersed as discrete physical domains within a continuous matrix of the renewable polyester. An increase in the deformation force and elongational strain causes debonding to occur in the renewable polyester matrix at those areas located adjacent to the discrete domains. This can result in the formation of a plurality of voids adjacent to the discrete domains that can help to dissipate energy under load and increase impact strength. To even further increase the ability of the composition to dissipate energy in this manner, an interphase modifier may be employed that reduces the degree of friction between the toughening additive and renewable polyester and thus enhances the degree and uniformity of debonding.

Bimodal polyethylene composition and articles made therefrom

The invention relates to a polyethylene composition with a bimodal molecular weight distribution, methods for making the same, and articles made therefrom, such as high topload blow moldings and transmission and distribution pipes. The composition comprises a low-molecular-weight (LMW) ethylene homopolymer component and a homogeneous, high-molecular-weight (HMW) ethylene interpolymer component, wherein the LMW component is characterized as having a molecular weight distribution, MWD L , of less than about 8. In some embodiments, the HMW component is characterized by a reverse comonomer distribution.