Patents Examined by J. Ziegler
  • Patent number: 4820770
    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.
    Type: Grant
    Filed: January 25, 1988
    Date of Patent: April 11, 1989
    Assignee: Ethyl Corporation
    Inventor: Robert A. Schleifstein
  • Patent number: 4481331
    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.
    Type: Grant
    Filed: March 22, 1983
    Date of Patent: November 6, 1984
    Inventor: Ping Y. Liu
  • Patent number: 4469845
    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.
    Type: Grant
    Filed: May 16, 1983
    Date of Patent: September 4, 1984
    Inventor: Kenneth W. Doak
  • Patent number: 4469843
    Abstract: Thermoplastic molding compositions which comprise a rubber modified styrene-maleic anhydride non-equimolar copolymer and polycarbonate resin are disclosed.
    Type: Grant
    Filed: May 19, 1982
    Date of Patent: September 4, 1984
    Assignee: Atlantic Richfield Company
    Inventor: Frank E. Lordi
  • Patent number: 4469844
    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.
    Type: Grant
    Filed: May 16, 1983
    Date of Patent: September 4, 1984
    Inventor: Kenneth W. Doak
  • Patent number: 4468496
    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.
    Type: Grant
    Filed: July 26, 1982
    Date of Patent: August 28, 1984
    Assignees: Bridgestone Tire Co., Ltd., Japan Synthetic Rubber Co., Ltd.
    Inventors: Yasumasa Takeuchi, Mitsuhiko Sakakibara, Nobuo Tagata, Masaki Ogawa, Yasushi Hirata, Shigeru Tomihira
  • Patent number: 4464500
    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.
    Type: Grant
    Filed: August 9, 1983
    Date of Patent: August 7, 1984
    Inventors: Jeffrey Diamond, David S. Winkler
  • Patent number: 4463158
    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.
    Type: Grant
    Filed: June 20, 1983
    Date of Patent: July 31, 1984
    Assignee: Olin Corporation
    Inventors: James M. O'Connor, Donald L. Lickei, Michael L. Rosin
  • Patent number: 4463117
    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.
    Type: Grant
    Filed: April 19, 1982
    Date of Patent: July 31, 1984
    Assignee: Technicon Instruments Corporation
    Inventor: Michael J. Malin
  • Patent number: 4460736
    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.
    Type: Grant
    Filed: July 3, 1980
    Date of Patent: July 17, 1984
    Assignee: Celanese Corporation
    Inventors: Michael F. Froix, Norman Trouw
  • Patent number: 4460735
    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.
    Type: Grant
    Filed: July 3, 1980
    Date of Patent: July 17, 1984
    Assignee: Celanese Corporation
    Inventor: Michael F. Froix
  • Patent number: 4460743
    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.
    Type: Grant
    Filed: December 28, 1982
    Date of Patent: July 17, 1984
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Katsuhiro Abe, Shin-ichi Yamauchi, Akira Ohkubo
  • Patent number: 4460719
    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.
    Type: Grant
    Filed: January 19, 1983
    Date of Patent: July 17, 1984
    Inventor: Carlos R. Danville
  • Patent number: 4456736
    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.
    Type: Grant
    Filed: December 30, 1981
    Date of Patent: June 26, 1984
    Assignee: Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
    Inventors: Shunitsu Miyashita, Masaaki Azuma, Akiyoshi Somemiya
  • Patent number: 4456569
    Abstract: A protective colloid for use in an interfacial polymerization process comprising a graft copolymer of polyvinyl alcohol and methyl vinyl ether/maleic acid.
    Type: Grant
    Filed: November 30, 1983
    Date of Patent: June 26, 1984
    Assignee: Stauffer Chemical Company
    Inventors: Marius Rodson, Herbert B. Scher
  • Patent number: 4456724
    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.
    Type: Grant
    Filed: March 31, 1982
    Date of Patent: June 26, 1984
    Assignee: Hercules Incorporated
    Inventors: William W. Maslanka, Gavin G. Spence
  • Patent number: 4454304
    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.
    Type: Grant
    Filed: April 22, 1981
    Date of Patent: June 12, 1984
    Assignee: Copolymer Rubber & Chemical Corp.
    Inventor: Tom C. H. Tsai
  • Patent number: 4454271
    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.
    Type: Grant
    Filed: March 17, 1983
    Date of Patent: June 12, 1984
    Assignee: General Electric Company
    Inventors: Glenn D. Cooper, Arthur Katchman
  • Patent number: 4452947
    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.
    Type: Grant
    Filed: May 20, 1983
    Date of Patent: June 5, 1984
    Assignee: Bayer Aktiengesellschaft
    Inventors: Rudiger Musch, Wilhelm Gobel, Eberhard Muller, Wolfgang Konter
  • Patent number: 4452943
    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.
    Type: Grant
    Filed: January 16, 1974
    Date of Patent: June 5, 1984
    Inventor: Conrad Goldman