Abstract: Disclosed is a propylene-based resin composition comprising more than 15 parts by mass and 40 parts by mass or less of an ethylene/?-olefin copolymer (E1) and 4 to 20 parts by mass of an ethylene/?-olefin/diene copolymer (E2), and comprising also a propylene-based polymer (P1) having an amount of a n-decane-soluble part at 23° C. of 5 to 25% by mass, wherein the ethylene content of the n-decane-soluble part is more than 40% by mass and 60% by mass or less, a propylene homopolymer (P2) and an inorganic filler (F) [providing that the total amount of the components (P1), (P2), (E1), (E2) and (F) is taken as 100 parts by weight]. The propylene-based resin composition is capable of producing a molded article which is excellent in mechanical properties, unnoticeable flow marks, low gloss.

Abstract: The present invention provides a modified vinyl alcohol polymer having a side chain with an ethylenic double bond, and having reduced a water-insoluble content and superior storage stability in the form of an aqueous solution, methods of making thereof, a modified vinyl alcohol polymer (A) having a degree of saponification of 68 mol % or more and less than 99.9 mol %, and a viscosity-average degree of polymerization of 200 or more and less than 3,000, and comprising a side chain with 0.01 mol % or more and less than 0.50 mol % of a double bond derived from an esterification agent, the esterification agent being one or more selected from the group consisting of (i) itaconic acid and/or derivatives thereof, and (ii) methacrylic acid and/or derivatives thereof, and the modified vinyl alcohol polymer (A) having a peak width W0.05h of at least 2.85 minutes and less than 3.70 minutes at a height of 5% from the baseline in a peak measured by HPLC.

Abstract: A block copolymer composition is disclosed herein. In some embodiments, the block copolymer composition includes a diblock copolymer and a triblock copolymer each including a polyolefin-based block and a polystyrene-based block. The diblock copolymer is present at less than or equal to 19% , based on total weight of the block copolymer composition, the polyolefin-based block includes a repeating unit represented by Formula 1, and the polystyrene-based block includes one or more of Formulas 2 and 3: wherein R1 is hydrogen, C3 to C20 alkyl, or C3 to C20 alkyl substituted with silyl, R2 and R3 are each independently C6 to C20 aryl, or C6 to C20 aryl substituted with halogen, C1 to C12 alkyl, or C3 to C12 cycloalkyl, n is an integer from 1 to 10,000, and l and m are each independently an integer from 10 to 1,000.

Abstract: The present invention relates to a heterophasic propylene polymer (HECO) comprising a) 65 to 90 wt. % of a matrix component (M) selected from a propylene homo- or random copolymer (PP); and b) 10 to 35 wt. % of an ethylene-propylene rubber (EPR), dispersed in the propylene homo- or random copolymer (PP), whereby the xylene cold soluble fraction (XCS) of the heterophasic propylene polymer (HECO) has—an ethylene content of 10.0 to 17.0 wt. %; —an intrinsic viscosity (IV), determined according to ISO 1628-1:2009, of at least 1.6 dl/g; and the xylene cold insoluble fraction (XCI) of the heterophasic propylene polymer (HECO) has 2, 1-erythro regiodefects in an amount of at least 0.4 mol % to a composition comprising the heterophasic propylene polymer (HECO), a process for its preparation and an article comprising the heterophasic propylene polymer (HECO) or the composition comprising the same.

Abstract: The present disclosure relates to a polyethylene resin composition exhibiting excellent processability and bubble stability, which can provide a film or fiber having excellent physical properties through various processes. The polyethylene resin composition includes a first polyethylene resin having a density of 0.950 g/cm3 to 0.960 g/cm3, a weight average molecular weight of 80000 g/mol to 100000 g/mol and a molecular weight distribution of 3.3 to 4.0; and a second polyethylene resin having a density of 0.950 g/cm3 to 0.960 g/cm3, a weight average molecular weight of 500000 g/mol to 600000 g/mol and a molecular weight distribution of 1.3 to 2.0.

Abstract: An ethylene-vinyl alcohol copolymer has an ethylene content of 20 to 60 mol % and includes a carboxylic acid group and a lactone ring group present at terminals thereof, wherein the molar concentration (Y/Z) of a lactone ring molar content (Y) to a sum (Z) of a carboxylic acid molar content (X) and the lactone ring molar content (Y) is not less than 58 mol %. The ethylene-vinyl alcohol copolymer is excellent in high-temperature thermal stability substantially without thermal decomposition, and is free from odor emanation and coloration even if being processed at a higher temperature.

Abstract: Provided is a heat-resistant resin composition which includes: a base resin including: a graft copolymer prepared by graft polymerization of a diene-based rubber polymer with an aromatic vinyl-based monomer and a vinyl cyan-based monomer; a first styrene-based copolymer including an aromatic vinyl-based unit and a vinyl cyan-based unit; a second styrene-based copolymer including a maleimide-based unit, an aromatic vinyl-based unit, and a vinyl cyan-based unit; and a carbonate-based polymer; and a third styrene-based copolymer including an aromatic vinyl-based unit and a maleic acid-based unit.

Abstract: The present invention is directed to a polypropylene composition (C) comprising abase polymer being a first polypropylene (PP1) and a second polypropylene (PP2). The present invention is further directed to a film and a fiber comprising said polypropylene composition (C).

Abstract: A block copolymer and a use thereof are disclosed herein. The block copolymer of the present application may have excellent self-assembly properties or phase separation characteristics and simultaneously have characteristics capable of changing the self-assembly structure formed once, or provide a block copolymer capable of forming a pattern of phase separation structures in a polymer membrane.

Abstract: To provide a polyacetal resin composition which is good sliding characteristics and is less likely to produce the blister; a molded article; and a method for manufacturing the polyacetal resin composition. The polyacetal resin composition containing: (A) 100 parts by mass of a polyacetal resin; (B1) a polyolefin resin grafted with a silicone compound; (B2) a non-grafted silicone compound; and (C) 0.5 to 1.8 parts by mass of a polyolefinic lubricant, with a total of content of the silicone compound in the (B1) polyolefin resin and content of the (B2) non-grafted silicone compound, being adjusted to 0.6 to 2.5 parts by mass, per 100 parts by mass of the (A) polyacetal resin, and with (B1)/(B2), which is a ratio by mass of the content of the (B1) polyolefin resin and the content of the (B2) non-grafted silicone compound, being adjusted to 68/32 to 45/55.

Abstract: This heterophasic propylene polymerization material comprises a propylene copolymer (I), an ethylene-?-olefin copolymer (II-1), and an ethylene-?-olefin copolymer (II-2), wherein the contained amount of a monomeric unit derived from an olefin other than propylene in the propylene copolymer (I) is not less than 0.05 wt % but less than 10 wt %, the limiting viscosity [?]I of the propylene copolymer (I) is less than 1.50 dL/g, the contained amount of a monomeric unit derived from ethylene in the ethylene-?-olefin copolymer (II-2) is 10-30 wt %, and the limiting viscosity of the ethylene-?-olefin copolymer (II-2) is higher than that of the ethylene-?-olefin copolymer (II-1).

Abstract: Provided is a thermoplastic resin composition which includes: a graft copolymer prepared by graft-polymerizing an aromatic vinyl-based monomer and a vinyl cyan-based monomer onto an acrylic rubber polymer; a first matrix copolymer including a C1-C3 alkyl (meth)acrylate-based monomer unit, an aromatic vinyl-based monomer unit and a vinyl cyan-based monomer unit; a second matrix copolymer including a C1-C3 alkyl (meth)acrylate-based monomer unit, an aromatic vinyl-based monomer unit and a vinyl cyan-based monomer unit; and an additive including a polymer including a C1-C3 alkyl (meth)acrylate-based monomer unit, wherein the first matrix copolymer and the second matrix copolymer have different weight-average molecular weights, specifically, a thermoplastic resin composition which allows high gloss, high hardness, high weather resistance and reduced whitening to be realized.

Abstract: The present invention relates to a high performance cross-linked triblock cationic functionalized polymer for electrochemical applications, and methods of making and using the same. The invention also relates to a tunable hydrogenated polymer, that can be functionalized with a particular cation for a particular application, and the method of making the hydrogenated polymer and tuning the hydrogenated polymer for the application.

Abstract: The invention provides polypropylene impact copolymer compositions with reduced emissions of volatiles for the automotive industry, particularly for interior applications in the automotive industry.

Abstract: A method for preparing a graft copolymer includes the steps of: 1) preparing a seed by adding one or more selected from the group consisting of an alkyl (meth)acrylate-based monomer, an aromatic vinyl-based monomer, and a vinyl cyan-based monomer and carrying out polymerization; 2) preparing a core in the presence of the seed by adding an alkyl (meth)acrylate-based monomer and carrying out polymerization; and 3) preparing a shell in the presence of the core by adding an aromatic vinyl-based monomer and a vinyl cyan-based monomer and carrying out polymerization, wherein an activator including a compound represented by Chemical Formula 1 is added in the step 3). In Chemical Formula 1, R1 and R2 are each independently hydrogen, a C1-C10 alkyl group, or *-(C=O)OM2, provided that R1 and R2 are not both hydrogen, and M1 and M2 are each independently an alkali metal.

Abstract: 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 Mw/Mn of <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 Mw/Mn of <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 Mw/Mn of >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.

Abstract: A thermoplastic vulcanizate composition comprises: (i) a dispersed phase of rubber that is at least partially cured; (ii) a continuous thermoplastic phase including at least one thermoplastic polymer; (iii) a first polysiloxane comprising a migratory liquid siloxane polymer; and (iv) a second polysiloxane comprising a non-migratory siloxane polymer bonded to a thermoplastic material.

Abstract: A polyethylene composition comprises 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 Mw/Mn of <2.3, a second polyethylene which is an ethylene copolymer or homopolymer having a weight average molecular weight of from 50,000 to 200,000 and a molecular weight distribution Mw/Mn of <2.3, and a third polyethylene which is an ethylene copolymer or homopolymer having a weight average molecular weight of from 70,000 to 200,000 and a molecular weight distribution Mw/Mn of <2.3, where the first polyethylene has more short chain branching than the second polyethylene or the third polyethylene. The polyethylene composition has a composition distribution breadth index, CDBI50 obtained from a crystallization elution fractionation (CEF) analysis of <45 weight %.

Abstract: Thermoplastic molding composition comprising (A) 40 to 80 wt.-% SAN copolymer (S/AN-ratio 78:22 to 65:35, Mw 80,000 to 250,000 g/mol); (B) 20 to 60 wt.-% SBC block copolymer (monovinylarene 61 to 64 wt.-%) comprising conjugated diene/monovinylarene tapered polymer blocks; and (C) 0 to 5 wt.-% additives and/or processing aids (C); exhibiting ultra-high melt flow with good mechanical, thermal and optical properties, a process for its preparation and its use for the production of bulky and/or thin walled articles.

Abstract: The present invention relates to a process for producing a thermoplastic moulding composition comprising a thermoplastic copolymer A, a graft copolymer B and optionally a further polymer component C as well as optional further additives K, wherein the preparation of the graft copolymer B is carried out via emulsion polymerization, and wherein at least one surfactant S2 is used in grafting step of emulsion polymerization in a volume concentration in the range of 0.46 to 0.75 mol/m3, based on the volume of the graft copolymer B latex particles obtained; and wherein the mean particle diameter Dw of the latex particles of graft copolymer B is in the range of 60 to 800 nm.