Abstract: This invention relates to a thermoplastic formulation having a first part comprising, (i) nylon 6,6 nylon 6 or a mixture thereof and (ii) a halogenated polyphenylene ether flame retardant, and a second part, in admixture with the first part, comprising a Diels-Alder adduct having the formulaA--R--(A).sub.nwherein n is 0, 1 or 2 and A is a polyhalogenated cycloalkylene or cycloalkyl group and R is as defined herein.
Abstract: Novel compositions with high resistance to environmental stress cracking and crazing comprise:(a) an aromatic carbonate polymer; and(b) a modifer combination therefor comprising:(i) a selectively hydrogenated linear, sequential, or radial teleblock copolymer resin of a vinyl aromatic compound (A).sub.n and (A').sub.n and an olefinic elastomer (B) of of the A--B--A'; A--(B--A--B).sub.n --A; A(BA).sub.n B; (A).sub.4 B; B(A).sub.4 ; or B((AB).sub.n B).sub.4 type, wherein n is an integer from 1 to 10;(ii) an olefin-acrylate or methacrylate copolymer, alone, or in further combination with(iii) a polyolefin.
Abstract: A polyblend of (a) 80-20 percent of a rubber-modified vinyl chloride resin, prepared by polymerization of vinyl chloride in the presence of 2 to 20 percent of a rubber, and (b) 20-80 percent of copolymers or terpolymers of a vinyl aromatic monomer, such as styrene, an unsaturated dicarboxylic acid anhydride, such as maleic anhydride, and an optional third monomer such as methyl methacrylate or acrylonitrile, and (c) optionally 0-15 percent of an ungrafted rubber such as a block copolymer of 1,3-butadiene and styrene; and/or 0-35 percent of a graft copolymer of rubber, styrene, and methyl methacrylate or acrylonitrile. The polyblends have high heat distortion temperatures, high impact strength, good processability, and can be made in a substantially transparent form.
Abstract: A polyblend exhibiting high heat distortion temperatures, high impact strength, good processability, and which can be made in a substantially transparent form is produced from (a) 80-20 percent of a rubber-modified vinyl chloride resin, prepared by polymerization of vinyl chloride in the presence of 2-20 percent of a rubber; and (b) 20-80 percent of a rubber-modified copolymer or terpolymer of a vinyl aromatic monomer, such as styrene, an unsaturated dicarboxylic anhydride, such as maleic anhydride, an optional third monomer such as methyl methacrylate or acrylonitrile, prepared by polymerizing the monomers in the presence of 5-25 percent of one or more rubbers; and (c) optionally 0 to 10 percent of an ungrafted rubber, such as a block copolymer of 1,3-butadiene and styrene; and/or 0-35 percent of a graft copolymer of rubber, styrene, and methyl methacrylate or acrylonitrile.
Abstract: A rubber composition having excellent fracture properties and cut growth resistance is disclosed, which consists of 10-95 parts by weight of polybutadiene having a content of cis-1,4 bond of at least 70% and an average chain length of 1,4-sequence of 110-450 and 90-5 parts by weight of at least one diene rubber.
July 26, 1982
Date of Patent:
August 28, 1984
Bridgestone Tire Co., Ltd., Japan Synthetic Rubber Co., Ltd.
Abstract: A polymeric composition containing butyl rubber, and/or bromobutyl rubber, and/or chlorobutyl rubber; a EPDM polymer, and polyethylene; and use thereof to prepare molded, cured, flexible bulbs are provided.
Abstract: A novel, heat curable, liquid polymer composition is disclosed which comprises a modified polyurethane oligomer containing terminal ethylenic unsaturation and a free radical generating catalyst. In a preferred embodiment, the polymer composition further includes at least one additional component selected from a reinforcing agent and a filler.
June 20, 1983
Date of Patent:
July 31, 1984
James M. O'Connor, Donald L. Lickei, Michael L. Rosin
Abstract: A heat-stable, polymer-forming composition of a polymerizable material, a transition metal compound, a polymer chain terminator, and, optionally, a preventive antioxidant is disclosed as well as particular uses of such composition.
Abstract: A polymer blend which is capable of exhibiting an anisotropic melt phase, improved processability characteristics, and the ability to form shaped articles having satisfactory mechanical properties is provided. The polymer blend comprises approximately 5 to approximately 75 percent by weight, based upon the total weight of the blend, of a sulfone polymer which is selected from the group consisting of polyether sulfone having recurring units of the formula ##STR1## polysulfone having recurring units of the formula ##STR2## a mixture of the above sulfone polymers, and approximately 25 to approximately 95 percent by weight, based upon the total weight of the blend, of a melt processable wholly aromatic polyester which is capable of forming an anisotropic melt phase apart from the blend.
Abstract: A polymer blend which is capable of exhibiting an anisotropic melt phase and the ability to form shaped articles having improved mechanical properties is provided. The polymer blend comprises approximately 5 to approximately 75 percent by weight, based upon the total weight of the blend, of a polycarbonate and approximately 25 to approximately 95 percent by weight, based upon the total weight of the blend, of a melt processable wholly aromatic polyester which is capable of forming an anisotropic melt phase apart from the blend.
Abstract: A composition comprising a polyphenylene ether, a polystyrene, a polyphenylene ether-grafted polyolefin and, optionally, a polystyrene-grafted polyolefin is disclosed. This composition has excellent impact resistance and, due to dispersion phase being a crystalline resin, an excellent rigidity.
Abstract: Polyester and hardener compositions have incorporated therein pigments of Toluidine Red Y and Parachlor R to enable the user to determine when mixing is uniform and when the cure has been completed.
Abstract: A method is provided wherein graft copolymers of polyphenylene with styrene and/or other vinylic monomers are readily prepared in high yields of grafting efficiency by radical polymerization of vaporized monomer onto solid polyphenylene ether. The resulting graft copolymer has improved properties, such as fracture strength, and chemical resistance.
Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.
Abstract: The method of producing a rubber compound having high green strength comprising providing separate rubber components one of which contains a tertiary amine component bound therein and the other of which contains a halogen cross linking agent bound therein, and blending the two rubber components to form a rubber blend having high green strength.
Abstract: Homogeneous blends of polyphenylene ether resin and copolymers of styrene and 4-tert-butylstyrene are described. Rubber modifiers can be included in the copolymer or the blend. The blends are moldable into highly ductile articles having higher heat distortion temperature.
Abstract: Vulcanisable, elastomeric chloroprene-sulphur copolymers having viscosities of from 60 to 35 MU, strengths of >20 MPa and sulphur contents of from about 0.5 to 0.7%, by weight, in the batch are obtained by polymerising chloroprene in the presence of from 0.10 to 0.35%, by weight, of sulphur to form a latex I, polymerising chloroprene in the presence of from 0.50 to 1.00% by weight, of sulphur to form a latex II, mixing latices I and II in a ratio of from 4:1 to 1:4 (based in each case on solids), optionally together with other sulphur-modified polychloroprene latices, the mixture is peptised and worked-up to form the solid rubber, the percentages quoted being based on the quantity of monomer.
May 20, 1983
Date of Patent:
June 5, 1984
Rudiger Musch, Wilhelm Gobel, Eberhard Muller, Wolfgang Konter
Abstract: A process for dielectrically heating and thermoforming a non-polar thermoplastic material by electromagnetic field energy is accomplished by the addition of a polar domain-containing material having at least one nitrile group to the thermoplastic material. Compositions comprising thermoplastic material and a polar domain containing material useful in this process are also described.