Abstract: Extrusion processability of non-fluorinated melt-processable polymers is improved by introducing a fluoropolymer process aid by means whereby the weight average particle size of the fluoropolymer is greater than 2 microns as it reaches the extruder die entrance.

Abstract: Slush moldable polyolefin powders are prepared by blending a crosslinkable silane-grafted, olefinic interpolymer, optionally containing a crystalline polypropylene homopolymer or interpolymer; and a crosslinked silane-grafted, olefinic interpolymer containing a cure catalyst, the blend optionally containing a crystalline polyolefin powder. The resulting compositions can be slush molded to make a variety of articles of manufacture, especially automotive interior components, having good hot tear properties, low hardness and no glossing after heat aging.

Abstract: A novel emulsion polymerization process for the production of fluoroelastomers is disclosed wherein a partially fluorinated anionic surfactant of the formula F—(CF2CF2)n—CH2CH2SO3M, where n is an integer from 2 to 9, or mixtures thereof, and M is a cation having a valence of 1, is used as the dispersing agent.

Abstract: Ethylene copolymer elastomer compositions, acrylate rubber compositions, nitrile rubber compositions, fluoroelastomer compositions, and chlorinated olefin elastomer compositions are provided which are curable by exposure to UV radiation. The compositions are particularly suited for production of elastomeric seals using hot melt equipment and a gasketing in place technique.

Abstract: The present invention is specifically directed to improved polyvinyl chloride compositions having excellent impact strength. In particular, the impact resistant composition comprises a) a vinyl chloride polymer, b) at least one ethylene/alpha-olefin copolymer, said copolymer having a density of 0.858 to 0.91 g/cc and having a melt index from an I10 value of 0.1 to an I2 value of 10, and c) at least one randomly chlorinated olefin polymer having a chlorine content of from 20-40 percent by weight, the feedstock for said chlorinated olefin polymer having a melt index from an I10 value of 0.1 to an I2 value of 10. Optionally, these impact resistant polyvinyl chloride compositions may have inorganic filler levels from 5 to 50 parts per hundred relative to the polyvinyl chloride polymer.

Abstract: Compositions of specialty fluoroelastomers containing copolymerized units of tetrafluoroethylene, propylene, optionally vinylidene fluoride, and a cure site monomer selected from the group consisting of i) trifluoroethylene, ii) 3,3,3-trifluoropropene-1, iii) 1,2,3,3,3-pentafluoropropylene, iv) 1,1,3,3,3-pentafluoropropylene, and v) 2,3,3,3-tetrafluoropropene are readily curable with polyhydroxy curing systems. The resulting cured articles have a combination of excellent resistance to alkaline fluids, superior tensile properties and compression set resistance.

Abstract: Extrusion processability of non-fluorinated melt-processable polymers is improved by introducing a fluoropolymer process aid by means whereby the weight average particle size of the fluoropolymer is greater than 2 microns as it reaches the extruder die entrance.

Abstract: A thermoplastic polyurethane/olefin-graft polymer blend with an optional compatibilizing polymer that demonstrates improved tensile strength, compression set and abrasion resistance properties relative to a blend prepared from the same thermoplastic polyurethane and an ungrafted version of the olefin-graft polymer.

Abstract: Fluoroelastomers which contain copolymerized units of a fluoroolefin cure site monomer of the general formula: Rf—(CH2CF2)n—CH═CF2, wherein Rf is a C1-C6 perfluoroalkyl group or a C1-C6 perfluoroalkoxy group and n is an integer from 1-3, exhibit excellent physical properties and processability when cured with polyhydroxy compounds.

Abstract: Thermoplastic polyolefin blends having improved resistance to fluids such as petroleum fuels after being painted with flexible coatings such as polyurethanes paints and the like are disclosed. These blends include a crystalline or semi-crystalline polyolefin such as polyethylene, polypropylene, or a copolymer of ethylene and a C3 to C10 olefin, and a multimodal elastomer of sequentially polymerized ethylene-&agr;-olefin monomers. The substantially crystalline polyolefin is present in an amount of 30 to 98 weight percent, while the multimodal elastomer, which is substantially amorphous, is present in an amount of about 2 to 70 weight percent. The blends may contain additional polymeric components, fillers and the like. In addition to increased paint adherence, higher weld-line strength, low temperature ductility and processability can be achieved.

Abstract: Ethylene copolymer elastomer compositions, acrylate rubber compositions, nitrile rubber compositions, fluoroelastomer compositions, and chlorinated olefin elastomer compositions are provided which are curable by exposure to UV radiation. The compositions are particularly suited for production of elastomeric seals using hot melt equipment and a gasketing in place technique.

Abstract: Extrusion processability of non-fluorinated melt-processable polymers is improved by introducing a process aid package comprising at least two unimodal fluoroelastomers having different Mooney viscosities.

Abstract: Ethylene copolymer elastomer compositions, acrylate rubber compositions, nitrile rubber compositions, fluoroelastomer compositions, and chlorinated olefin elastomer compositions are provided which are curable by exposure to UV radiation. The compositions are particularly suited for production of elastomeric seals using hot melt equipment and a gasketing in place technique.

Abstract: Ethylene copolymer elastomer compositions, acrylate rubber compositions, nitrile rubber compositions, fluoroelastomer compositions, and chlorinated elastomer compositions are provided which are curable by exposure to UV radiation. The compositions are particularly suited for production of elastomeric seals using hot melt equipment and a gasketing in place technique.

Abstract: Safety glass interlayers are prepared from a composition comprising: A. A homogeneously linear or substantially linear ethylene/&agr;-olefin interpolymer, e.g., ethylene/1-octene; B. A coagent containing at least two vinyl groups, e.g., trimethyol propane tri(meth)acrylate; and C. A peroxide, e.g., Luperox™ 101. The interlayer films exhibit an excellent combination of tear strength and clarity.

Abstract: Rheology-modified thermoplastic elastomer compositions comprising a melt blend of an ethylene/&agr;-olefin polymer and a high melting polymer such as polypropylene or a propylene/&agr;-olefin copolymer wherein the rheology modification is induced by a combination of a peroxide and a free radical coagent. The resulting compositions have an elastomeric phase, a non-elastomeric phase and certain physical properties that exceed those of a like composition that is rheology-modified by peroxide alone. The compositions can be used to make a variety of articles of manufacture, such as automotive instrument panel skins, via calendaring and thermoforming procedures.

Abstract: The present invention is specifically directed to improved polyvinyl chloride compositions having excellent impact strength. In particular, the impact resistant composition comprises a) a vinyl chloride polymer, b) at least one ethylene/alpha-olefin copolymer, said copolymer having a density of 0.858 to 0.91 g/cc and having a melt index from an I10 value of 0.1 to an I2 value of 10, and c) at least one randomly chlorinated olefin polymer having a chlorine content of from 20-40 percent by weight, the feedstock for said chlorinated olefin polymer having a melt index from an I10 value of 0.1 to an I2 value of 10. Optionally, these impact resistant polyvinyl chloride compositions may have inorganic filler levels from 5 to 50 parts per hundred relative to the polyvinyl chloride polymer.

Abstract: A novel emulsion polymerization process for the production of fluoroelastomers is disclosed wherein a hydrocarbon sulfonate anionic surfactant of the formula CH3—(CH2)n—SO3M, CH3—(CH2)n—C6H4—SO3M, or CH3—(CH2)n—CH═CHCH2—SO3M, where n is an integer from 6 to 17, or mixtures thereof, and M is a cation having a valence of 1, is used as the dispersing agent.

Abstract: Rheology-modified thermoplastic elastomer compositions are prepared by peroxide modification of a melt blend of an ethylene/&agr;-olefin polymer or a diene-modified ethylene/&agr;-olefin polymer and a high melting polymer such as polypropylene or a propylene/&agr;-olefin copolymer. The resulting compositions have an elastomeric phase, a non-elastomeric phase and certain physical properties that exceed those of a like composition that is not rheology-modified. The compositions can be used to make a variety of articles of manufacture via conventional procedures.

Abstract: A process for reducing odor in polychloroprene is provided that comprises treatment of a stabilized polychloroprene latex with a compound selected from the group consisting of ozone, hydrogen peroxide, alkali metal salts of halogen oxo acids, alkali metal salts of peroxy acids and mixtures thereof. Polychloroprene latex and solid compositions of low odor prepared by the process are also disclosed.