Abstract:
A thermoplastic crosslinked rubber composition comprising (A) from 1 to 99 parts by weight of a hydrogenated rubber obtained by hydrogenating not less than 50% of total double bonds of at least one homopolymer rubber of a conjugated diene type monomer or a random copolymer rubber consisting of a conjugated diene type monomer unit and an aromatic vinyl monomer unit and (B) from 1 to 99 parts by weight of an olefinic thermoplastic resin, total amount of (A) and (B) being 100 parts by weight, said (A) being partially or completely crosslinked, wherein said (A) is crystalline rubber, having a crystallization temperature in a range of from null50 to 70null C. and a heat quantity of crystallization at peak in a range of from 3 to 100 J/g in differential scanning calorimetry (DSC method).
Abstract translation:一种热塑性交联橡胶组合物,其包含(A)1至99重量份的氢化橡胶,其通过氢化不少于至少一种共轭二烯型单体的均聚物橡胶的总双键的50%或无规共聚物橡胶 的共轭二烯类单体单元和芳香族乙烯基单体单元,(B)1〜99重量份的烯烃类热塑性树脂,(A)和(B)的总量为100重量份,所述(A) 部分或完全交联,其中所述(A)是结晶橡胶,其结晶温度在-50至70℃的范围内,峰值结晶热量为3至100J / g 在差示扫描量热法(DSC法)中。
Abstract:
Polyolefin compositions for seal peel films, comprising (percent by weight): A) from 20 to 50% of HDPE, LDPE or EVA having MFR higher than 0.3 g/10 min; B) from 30 to 80% of a random copolymer of propylene with ethylene and/or a C4-C8 a-olefin, or of a polyolefin composition comprising not less than 20% of said random copolymer of propylene. C) from 0 to 20% of an elastomeric or elastomeric thermoplastic olefin polymer.
Abstract:
The present invention relates to a coextrusion binder comprising: 5 to 35 parts of a polymer (A) which itself consists of a blend of 80 to 20 parts of a metallocene polyethylene (A1) of relative density between 0.865 and 0.915 and of 20 to 80 parts of a non-metallocene LLDPE polyethylene (A2), the blend of (A1) and (A2) being cografted by an unsaturated carboxylic acid; 95 to 65 parts of a polyethylene (B) chosen from ethylene homopolymers or copolymers and elastomers; the blend of (A) and (B) being such that: the content of grafted unsaturated carboxylic acid is between 30 and 100 000 ppm, the MFI or melt flow index (ASTM D 1238 standard: 190null C./2.16 kg) is between 0.1 and 10 g/10 min. The present invention also relates to a multilayer structure.
Abstract:
This invention relates to propylene impact copolymer compositions. In particular, these unique and improved compositions can be produced using conventional, commercial-scale processes.
Abstract:
A bulk polymerized grafted and crosslinkable thermoplastic polyolefin powder composition having elasticity and flexibility properties, which is in the form of a powder intended for the production of flexible coatings by free flow over a hot mold, characterized in that it contains: a) from 100 to 5% by weight and preferably from 80 to 20% by weight of at least one homopolymer of ethylene and/or at least one copolymer containing at least 50 molar % of ethylene; b) from 0 to 95% by weight and preferably from 20 to 80% by weight of at least one thermoplastic elastomer; c) from 0.1 to 15 parts by weight and preferably from 0.5 to 10 parts by weight of a grafting agent, per 100 parts by weight of the accumulated components nullanull and nullbnull. This powder composition is suitable for the production of flexible coatings by its free flow over a hot mold.
Abstract:
The present invention relates to articles made from plasticized polyolefin compositions comprising a polyolefin and a non-functionalized hydrocarbon plasticizer.
Abstract:
An ethylene copolymer composition comprising an ethylene/null-olefin copolymer, A-4, of ethylene with an null-olefin of 3 to 20 carbon atoms in an amount of 65-98% by weight, whose melt tension, MT, at 190null C. and MFR satisfy the relation MT>2.2nullMFRnull0.84, and at least one crystalline polyolefin, B-2, in an amount of 1-40% by weight selected from the group consisting of, B-I, an ethylene homopolymer or a copolymer of ethylene with an null-olefin of 3 to 20 carbon atoms, prepared using a non-metallocene type catalyst, B-II, a propylene hompolymer or a copolymer of propylene with at least one olefin selected from ethylene and an null-olefin of 4 to 20 carbon atoms, and, B-III, a homopolymer of an null-olefin of 4 to 20 carbon atoms or a copolymer of null-olefins of 4 to 20 carbon atoms, and articles made from the composition.
Abstract:
Blends of very low density polyethylene produced using metallocene catalysts (mVLDPE) and polypropylene are disclosed. The polymer blends include a metallocene-catalyzed VLDPE polymer having a density of less than 0.916 g/cm3, the mVLDPE polymer preferably being linear and without long chain branching, a polypropylene homopolymer, random copolymer, or impact copolymer, and optionally flame retardant additives. The polymer blends are particularly suitable in membrane applications where increased tear resistance and tensile strength are desirable, such as in roof membranes, geomembranes, and pond liners.
Abstract translation:公开了使用茂金属催化剂(mVLDPE)和聚丙烯生产的非常低密度聚乙烯的共混物。 聚合物共混物包括密度小于0.916g / cm 3的金属茂催化的VLDPE聚合物,mVLDPE聚合物优选是直链的且不具有长链支化,聚丙烯均聚物,无规共聚物或抗冲共聚物,以及任选的火焰 阻燃添加剂。 聚合物共混物特别适用于需要增加的抗撕裂性和拉伸强度的膜应用中,例如在屋顶膜,土工膜和池塘衬里中。
Abstract:
The subject invention discloses thermoplastic composition which is comprised of a blend of a thermoplastic polyolefin resin and a modified elastomer, wherein said thermoplastic polyolefin resin selected at least from the group of polyethylene, isotactic polypropylene, syndiotactic polypropylene, polypropylene impact copolymers containing about 1-7% by weight of ethylene, butene, hexene, or octene, polyolefin copolymers such as ethylene-butene, hexene, or octene, polybutene, reactor grade modified polypropylene, metallocene polypropylene, oxypolypropylene, wherein said modified elastomer is comprised of a conjugated diene selected from 1,3-butadiene and isoprene, wherein said modified elastomer is highly branched, wherein said modified elastomer is characterized by having a Gnull and Gnull frequency crossover of no more than 4 radians/s at 100null C., wherein the thermoplastic polyolefin is present in an amount which is within the range of about 5 parts by weight to about 95 parts by weight, and wherein the modified elastomer is present in an amount which is within the range of about 5 parts by weight to about 95 parts by weight, based upon the total weight of the thermoplastic composition. The present invention also discloses a process for preparing a thermoplastic composition which comprised (1) mixing a thermoplastic polyolefin resin and a modified elastomer at a temperature about or above the melting point of the thermoplastic resin in a mixing devise, (2) discharging the mixed blend from the mixing devise, and (3) forming the mixed blend into a pellet, sheet, or article of manufacture, wherein said thermoplastic polyolefin resin selected at least from the group of polyethylene, isotactic polypropylene, syndiotactic polypropylene, polypropylene impact copolymers containing about 1-7% by weight of ethylene, butene, hexene, or octene, polyolefin copolymers such as ethylene-butene, hexene, or octene, polybutene, reactor grade modified polypropylene, metallocene polypropylene, oxypolyolefin, wherein said modified elastomer is comprised of a conjugated diene selected from 1,3-butadiene and isoprene, wherein said modified elastomer is highly branched, wherein said modified elastomer is characterized by having a Gnull and Gnull frequency crossover of no more than 4 radians/s at 100null C., wherein the thermoplastic polyolefin is present in an amount which is within the range of about 5 parts by weight to about 95 parts by weight, and wherein the modified elastomer is present in an amount which is within the range of about 5 parts by weight to about 95 parts by weight, based upon the total weight of the thermoplastic composition.
Abstract:
It is an object to provide a thermoplastic elastomer material for a paper feeding roller having all of a high coefficient of friction, great delivery force, a polishing workability and an abrasion resistance which are characteristics to be required for the paper feeding roller. It is preferable that 20 to 80 parts by weight of an olefin-based thermoplastic elastomer and 80 to 20 parts by weight of a styrene-based thermoplastic elastomer are contained and a total amount of both thermoplastic elastomers is 100 parts by weight.