Abstract: Blend compositions are provided comprising first polyvinyl chloride and a second polyvinyl chloride wherein the inherent viscosity (I.V.) of the second polyvinyl chloride, measured in accordance with ASTM1243 is at least about 0.2 units higher than the I.V. of the first polyvinyl chloride. Preferably the I.V. of the second polyvinyl chloride is from 0.2 to 1.0 units higher than the I.V. of said first polyvinyl chloride, with the most preferred difference in I.V. (.DELTA.I.V.) being 0.35 to 0.65 units so as to yield a balance of property improvements including impact resistance, heat distortion temperature, melt flow and melt viscosity. The higher I.V. PVC is present at from 0.1 to less than 20 weight percent of the total PVC content. The compositions also can further comprise melt flow enhancers and/or Tg enhancing agents.

Abstract: A modified nonflammable molding resin composition. The composition is a blend of (A) a nonflammable resin composition composed of 30 to 80% by weight of a styrene resin having a methyl ethyl keton-soluble portion having a reduced viscosity of 0.2 to 0.5 dl/g and 70 to 20% by weight of a vinyl chloride resin having a polymerization degree of 400 to 800; and 0.5 to 15 parts, based on 100 parts by weight of the nonflammable resin composition (A), of (B) a copolymer of a vinyl cyanide, an alkyl methacrylate, an aromatic vinyl compound and another copolymerizable vinyl monomer in specified ratios and having a reduced viscosity of not less than 1.8 dl/g. The composition has improved heat stability in injection molding and excellent heat resistance.

Abstract: Thermoplastic polymer alloy compositions are provided consisting of a blend of polypropylene, ethylene copolymer ionomer resin, ethylene/glycidyl acrylate or methacrylate copolymer, and uncrosslinked ethylene propylene rubber. The compositions are particularly useful in applications where a wide range of temperature and abrasive conditions are encountered.

Abstract: A thermoplastic elastomer composition comprising a thermoplastic elastomeric block or graft polymer comprising at least one hard segment and at least one soft segment and a vulcanizing agent, which can be molded under high shearing stress at a temperature lower than a melting or softening point of the hard sements under shear force to give a molded article having a substantially smooth surface.

Abstract: Capped polyphenylene ethers are prepared by reaction of a polyphenylene ether with epoxy materials in methods which result in low levels of alkali metal ions and ammonium ions in the resulting product. Such low alkali metal ion and ammonium ion capped polyphenylene ethers are particularly useful in forming high impact blends with polyesters and polyamides, which find utility as molding compositions.

Abstract: A covulcanizable polymer blend of a highly unsaturated rubbery polymer and a sulfer imide-modified teropolymer of ethylene, a higher alpha olefin and a non-conjugated diene is provided. Processes for preparing the blend and vulcanizing the blend are also provided.

Abstract: A polyethylene composition which has excellent flow characteristics and mechanical properties, especially low temperature mechanical properties as well as thermal stability, elasticity and workability for molding. The polyethylene composition comprises 20 to 80 wt. % of an ethylene-.alpha.-olefin copolymer of higher molecular weight having (a) intrinsic viscosity (.eta..sub.1) of 1.2 to 9.0 dl/g, (b) density (d.sub.1) of 0.890 to 0.935 g/cm.sup.3 (c) a specific areal ratio calculated with an elution temperature-eluate volume curve in elution fractionation, and (d) a specific quantity of the content which is soluble in 25.degree. C. o-dichlorobenzene, and 80 to 20 wt. % of ethylene homopolymer or ethylene-.alpha.-olefin copolymer of lower molecular weight having (e) intrinsic viscosity (.eta..sub.2) of 0.2 to 1.6 dl/g, (f) density (d.sub.2) of 0.890 to 0.980 g/cm.sup.3 and, wherein the above (.eta..sub.1) is larger than (.eta..sub.2), and the prepared composition has an intrinsic viscosity (.eta.) of 0.

Abstract: Compositions based on polyolefins (high-density polyethylene, polypropylene, etc.) additionally containing at least one fluoropolymer and at least one low-density polyethylene, which can be employed for the production of shaped articles whose application calls for improved optical properties.

Abstract: The invention relates to a thermoplastic composition comprising a mixture of 25-80% by weight of at least one partially crystalline ethylene polymer or copolymer which has a density of 0.870-0.945; of 15-85% by weight of at least one random copolymer comprising 83-99.7 mol % of units derived from ethylene, 0-14 mol % of units derived from at least one acrylic or methacrylic ester, and 0.3-3 mol % of units derived from maleic anhydride; which has a melt index of 1-500 dg/min; of 1-8% by weight of at least one rubber; and of 0-8% by weight of talc; to the use of this composition for the manufacture of a film which has adhesive properties; to an industrial article comprising a metal coated with at least one layer of this composition; and to a composite film comprising at least one layer comprising this composition, with the condition that the proportion of talc in the latter does not exceed the proportion which is sufficient to provide an antiblocking effect, and at least one layer of another thermoplastic.

Abstract: The present invention relates to improved cover compositions for golf ball construction. The cover compositions comprise a blend of polar modified thermoplastic elastomers and ionomer resins.In addition, the present invention is directed to golf balls produced utilizing the improved cover compositions. The golf balls exhibit properties of enhanced playability without sacrificing distance and/or durability.

Abstract: A sealing composition for a container closure comprises a polymeric matrix material and its oxygen permeability is reduced by incorporating ethylene vinyl alcohol polymer into the composition. The composition can be in fluid or meltable form ready for application to a closure or it can be present as a deposit on the closure, for instance a gasket around the closure.

Abstract: Plastics suitable for use as thermoplastic moulding compositions obtained fromA) a thermoplastic vinyl polymer andB) a mixture ofB1) a copolymer of 35 to 49% by weight of maleic acid anhydride and 65 to 51% by weight of styrene andB2) a copolymer of styrene, .alpha.-methylstyrene or mixtures thereof on the one hand and acrylonitrile on the other having an acrylonitrile content of 35 to 60% by weight [based on B2)]and a process for their preparation.

Abstract: Resin compositions, comprising a high molecular weight copolymer having a molecular weight of at least 300,000, obtained by copolymerizing a styrenic monomer and an acrylic or methacrylic monomer, with or without another monomer, in the presence of a polyfunctional polymerization initiator, have wide molecular weight distribution and are suitable as binders for electrophotographic toners.

Abstract: An adhesive coating composition comprising an extensively amorphous poly-alpha-olefin and a functionalized graft copolymer of a predominately crystalline propylene polymer and an unsaturated carboxylic acid or derivative thereof.

Abstract: A graft copolymer based on ultrahigh-molecular-weight polyethylene having a molecular weight .gtoreq. 1,000,000 g/mol, an ethylene copolymer and a graft monomer; and the preparation and use thereof. The ethylene copolymer contains ethylene and vinyl acetate or ethylene and an alkenecarboxylic acid ester. The graft monomer is an alkenecarboxylic acid or an alkenecarboxylic anhydride. The resultant graft polymers posses improved properties compared with the materials from which they are derived.

Abstract: A thermoplastic elastomer comprising 55-90 parts by weight of a crosslinked acrylic rubber having a glass transition temperature of 0.degree. C. or lower and 45-10 parts by weight a copolymer of a methacrylate ester with a maleimide, which has a glass transition temperature of 110.degree. C. or higher. This thermoplastic elastomer may be produced by a first step of polymerizing an acrylic ester in the presence of a polyfunctional monomer with or without a chain transfer agent and a second step of adding a methacrylate ester and a maleimide to the resulting acrylic rubber to carry out copolymerization.

Abstract: A sealing composition for a container closure comprises a polymeric matrix material and its oxygen permeability is reduced by incorporating ethylene vinyl alcohol polymer into the composition. The composition can be in fluid or meltable form ready for application to a closure or it can be present as a deposit on the closure, for instance a gasket around the closure.

Abstract: A thermoplastic resin composition is disclosed which comprises(a) a modified polyphenylene ether or a composition containing it, and(b) (i) a modified propylene polymer comprising propylene polymer which is graft-copolymerized with a styrene based monomer or with a mixture of a styrene based monomer and a monomer copolymerizable therewith, or (ii) a composition containing the modified propylene polymer in (b)-(i) and propylene polymer. The resin composition may contain (c) a rubber-like substance containing at least one rubber-like substance having a polar group and/or (d) a melt flow characteristics improving agent.

Abstract: A large-sized exterior part of an automotive vehicle, injection-molded and formed of a polymer material comprises: (A) polypropylene in an amount ranging from 50 to 70 by weight %, the polypropylene containing ethylene in an amount not more than 15 weight % relative to the polypropylene and having a MFR (at 230.degree. C.) ranging from 5 to 60 g/10 min.; (B) ethylene-propylene copolymer rubber polymerized in the presence of a vanadium-based catalyst, in an amount ranging from 5 to 30 weight %, the copolymer containing propylene in an amount ranging from 20 to 40 weight % relative to the ethylene-propylene copolymer rubber and having a Mooney viscosity ML.sub.1+4 (100.degree. C.) ranging from 20 to 80; (C) ethylene-propylene copolymer rubber polymerized in the presence of a titanium-based catalyst, in an amount ranging from 5 to 45 weight %, the copolymer containing propylene in an amount ranging from 30 to 70 weight % relative to the ethylene-propylene copolymer rubber and having a Mooney viscosity ML.sub.

Abstract: Compositions containing at least 60% by weight of at least one copolymer (A) of ethylene and at least one alpha-olefin with 3 to 10 carbon atoms, and no more than 40% by weight of at least one copolymer (B) based on ethylene and at least one anhydride of an unsaturated dicarboxylic acid, characterized in that:(i) copolymer (A) has a density between 0.850 and 0.890,(ii) copolymer (B) contains at least 80 mol-% of units derived from ethylene and at least 0.1 mol-% of units derived from the anhydride of an unsaturated dicarboxylic acid, and(iii) at least one of copolymers (A) and (B) is modified by means of an effective amount either of a free-radical initiator if the modification involves copolymer (A), or of at least one compound capable of reacting with the anhydride functions of copolymer (B).