Patents Examined by J. Ziegler
  • Organic pigments
    Patent number: 4414353
    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: November 8, 1983
    Assignee: Hercules Incorporated
    Inventors: William W. Maslanka, Gavin G. Spence
  • Vinyl halide polymer blends of enhanced impact resistance
    Patent number: 4413092
    Abstract: A polymer blend capable of being molded to an impact resistant, article which comprises a vinyl halide homopolymer or copolymer, a conventional impact resistant enhancing polymer agent for polyvinyl halide wherein the monomer units consist essentially of acrylonitrile, 1,3-butadiene and styrene residues and a thermoplastic block elastomer wherein the essential and predominant monomer units are the residue of a mono-alkenyl aromatic hydrocarbon and the residue of an alkadiene hydrocarbon. The thermoplastic elastomer is normally incompatible with the vinyl halide polymer or copolymer. The vinyl halide polymer or copolymer constitutes the major proportion of said blend and the block and methacrylate polymers together constitute a minor proportion of the composition. The weight ratio of block polymer to acrylonitrile-butadiene-styrene polymer is preferably about 1:5 to about 5:1.
    Type: Grant
    Filed: February 24, 1982
    Date of Patent: November 1, 1983
    Assignee: Occidental Chemical Corporation
    Inventor: Gilbert Witschard
  • Thermoplastic molding materials
    Patent number: 4412037
    Abstract: Thermoplastic molding materials based on styrene polymers which have been made impact-resistant and on polyphenylene ethers, wherein the particles of the soft component of the styrene polymer which has been made impact-resistant have a mean diameter of more than 1 micron, and wherein the proportion of particles which have a diameter of less than 0.6 micron is not less than 40% by weight and the proportion of particles which have a diameter of from 0.6 to 3 microns is less than 3% by weight.
    Type: Grant
    Filed: September 14, 1981
    Date of Patent: October 25, 1983
    Assignee: BASF Aktiengesellschaft
    Inventors: Franz Brandstetter, Adolf Echte, Hermann Gausepohl, Herbert Naarmann
  • Curable resin composition
    Patent number: 4410666
    Abstract: A curable resin composition comprising a mixture and/or a preliminary reaction product of (a) at least one cyanate compound selected from the group consisting of polyfunctional cyanate esters, prepolymers of the cyanate esters, coprepolymers of the cyanate esters and an amine and mixtures thereof, (b) a polyhydantoin resin and optionally (c) at least one maleimide compound selected from the group consisting of polyfunctional maleimides, prepolymer of the maleimides, coprepolymers of the maleimides and an amine and mixtures thereof is disclosed.
    Type: Grant
    Filed: January 27, 1981
    Date of Patent: October 18, 1983
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Nobuyuki Ikeguchi, Hidenori Kimbara
  • Epoxy composition and sealing of integrated circuit modules therewith
    Patent number: 4410647
    Abstract: A composition containing an epoxy polymer, 4,4'(2-acetoxy-1,3 glyceryl)bis anhydro trimellitate; a polyanhydride; and a solid filler; method of preparation, and the sealing of integrated circuit modules therewith are provided.
    Type: Grant
    Filed: November 28, 1980
    Date of Patent: October 18, 1983
    Assignee: International Business Machines Corporation
    Inventors: John R. Susko, Robin A. Wheater
  • Impact resistant polyphenylene ether resin compositions
    Patent number: 4410651
    Abstract: Blends of polyphenylene ether resin and a small amount of certain ethylene copolymers or terpolymers containing hydroxyl and carbonyl functional groups, optionally including impact modifier, are described. These can be molded into articles which possess improved Gardner impact strength. The improvement is considerably greater than that which is achieved by use of the same amount of low density polyethylene.
    Type: Grant
    Filed: March 26, 1982
    Date of Patent: October 18, 1983
    Assignee: General Electric Company
    Inventors: William R. Haaf, Gim F. Lee, Jr., Sai P. Ting
  • Curable sealing composition
    Patent number: 4409056
    Abstract: There is provided a curable sealing composition comprising a low molecular weight rubber, a curing agent and other additives as required and being characterized in that a block copolymer of isoprene and butadiene with a viscosity average molecular weight of 7,000-150,000 is used as the low molecular weight rubber. The composition has a good workability, and when cured, produces seals having excellent thermal stability, elasticity and sealing effect.
    Type: Grant
    Filed: November 30, 1981
    Date of Patent: October 11, 1983
    Assignee: Kuraray Co., Ltd.
    Inventors: Hideo Takamatsu, Shobu Minatono
  • Low shrink unsaturated polyester resinous composition
    Patent number: 4409344
    Abstract: A low shrink unsaturated polyester based upon propylene glycol terephthalate reacted with a dibasic acid or anhydrides thereof and glycols and mixing the polyester with a filler, fibrous reinforcing agent and catalyst.
    Type: Grant
    Filed: June 23, 1981
    Date of Patent: October 11, 1983
    Assignee: Cargill Incorporated
    Inventors: Thomas J. Moulson, John E. Greenzweig
  • Organosilicic elastomers reinforced with improved precipitated silica particulates
    Patent number: 4409356
    Abstract: Mechanically/thermally improved, filler reinforced organosilicic elastomers, e.g., organopolysiloxanes, are comprised of a reinforcing amount of precipitated silica particulates having the properties:______________________________________ (i) BET surface area 190 to 340 m.sup.2 /g (ii) CTAB surface area 180 to 280 m.sup.2 /g (iii) ##STR1## 0.9 to 1.2 (iv) Residual sodium content <500 ppm (v) pH 3.5 to 6.0 (vi) Specific volume V.sub.o >4.2 (vii) Amount of particles of <0.05% a size as will not pass through a 45.mu.
    Type: Grant
    Filed: December 19, 1980
    Date of Patent: October 11, 1983
    Assignee: Rhone-Poulenc Industries
    Inventors: Robert Lagarde, Georges Vrisakis
  • Blend of polyalkylene terephthalate and wholly aromatic polyester and process for producing the same
    Patent number: 4408022
    Abstract: A process is provided for forming a novel polymer blend which exhibits an anisotropic melt phase wherein there is chemical interaction between previously formed polymeric blend components to yield a product which is capable of forming shaped articles having highly satisfactory mechanical properties. The process comprises intimately mixing together approximately 50 to 75 percent by weight of polyalkylene terephthalate and 25 to 50 percent by weight of a melt processable polyester which is capable of forming an anisotropic melt phase. A post-polymerization subsequently is conducted in the solid phase in a non-oxidizing atmosphere at a temperature within the range of approximately 250.degree. to 300.degree. C. for a period of time in the range approximately 8 to 72 hours to yield the desired chemical interaction between the previously formed polymeric blend components.
    Type: Grant
    Filed: December 15, 1981
    Date of Patent: October 4, 1983
    Assignee: Celanese Corporation
    Inventors: David E. Cincotta, Frank M. Berardinelli
  • Thermosetting resinous binder compositions, their preparation, and use as coating materials
    Patent number: 4405763
    Abstract: A thermosetting binder composition for coating, comprising:(I) (1) A non-acidic resinous saturated compound having a molecular weight of at least 900, and an alcoholic hydroxyl content of at least 0.2 eq./100 g;(2) A non-acidic polyester of a polycarboxylic acid cross-linking agent having more than one .beta.-hydroxyl ester group per molecule, and at least one of components (1) and (2) having an alcoholic hydroxyl functionality of more than 2, and(II) A transesterification-promoting metal salt or complex curing catalyst which is soluble in liquid hydrocarbons.For aqueous compositions, component (I) (1) is preferably a neutralized epoxy resin/amine adduct and component (II) should be insoluble in water; they can be used for cathodic electrodeposition.
    Type: Grant
    Filed: February 16, 1982
    Date of Patent: September 20, 1983
    Assignee: Shell Oil Company
    Inventors: Petrus G. Kooymans, Johannes J. M. H. Wintraecken, Werner T. Raudenbusch, Josepha M. E. Seelen-Kruijssen, Gerardus C. M. Schreurs
  • Co-vulcanizable rubber composition
    Patent number: 4405756
    Abstract: A rubber composition co-vulcanizable with a sulfur cure system, said composition comprising(1) 95 to 20% by weight of a partially hydrogenated unsaturated nitrile-conjugated diene copolymer rubber in which at least 50% of units derived from the conjugated diene are hydrogenated,(2) 5 to 80% by weight of an ethylenepropylene-nonconjugated diene terpolymer rubber, and(3) a required amount of at least one vulcanization accelerator selected from the group of thiuram accelerators and dithiocarbamate accelerators.
    Type: Grant
    Filed: August 25, 1982
    Date of Patent: September 20, 1983
    Assignee: Nippon Zeon Co., Ltd.
    Inventors: Motofumi Oyama, Kinro Hashimoto
  • Polyblends
    Patent number: 4405753
    Abstract: Polyblends are described which comprise (i) 40 to 60% by weight of polyphenylene oxide; (ii) from 10 to 30% by weight an SAN or ABS polymer comprising from 2 to 14% by weight of acrylonitrile; and (iii) from 10 to 30% by weight of a styrene/maleic anhydride copolymer containing from 5 to 18% by weight of maleic anhydride; and in which: (a) the weight proportion of rubber (ungrafted basis) in the polyblend is less than 8%; and (b) the proportions of acrylonitrile and maleic anhydride are selected such that, when plasticized only with 4 parts of triphenyl phosphate for each 100 parts by weight of polyphenylene oxide, the Izod impact strength is at least 50 J/M notch and the distortion temperature under load is at least 110.degree. C.
    Type: Grant
    Filed: February 3, 1982
    Date of Patent: September 20, 1983
    Assignee: Monsanto Company
    Inventors: Gary L. Deets, Quiriano A. Trementozzi
  • Use of hydrogenated polybenzyls as a mould-release agent for aromatic polyesters
    Patent number: 4405554
    Abstract: Small quantities of hydrogenated polybenzyls act as a perfect mould release agent for aromatic polyesters based on diphenols and iso- and/or terephthalic acids and do not appreciably impair the elastic strength characteristics, the dimensional stability under heat and the transparency.
    Type: Grant
    Filed: September 14, 1981
    Date of Patent: September 20, 1983
    Assignee: Bayer Aktiengesellschaft
    Inventors: Dieter Freitag, Klaus Reinking, Peter Tacke
  • Organic pigments
    Patent number: 4404310
    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: October 13, 1981
    Date of Patent: September 13, 1983
    Assignee: Hercules Incorporated
    Inventors: William W. Maslanka, Gavin G. Spence
  • Heat resistant resin composition
    Patent number: 4404322
    Abstract: A heat resistant thermoplastic resin composition is provided which comprises an iminated copolymer prepared by iminating a copolymer obtained by copolymerizing an aromatic vinyl monomer, maleic acid anhydride and a vinyl monomer copolymerizable with the aromatic vinyl monomer and maleic acid anhydride with the use of ammonia and/or a primary amine, and mixed with a graft polymer with or without a styrene base polymer.
    Type: Grant
    Filed: January 20, 1982
    Date of Patent: September 13, 1983
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Kiyotaka Saito, Tomoyuki Kitsunai, Shozo Hori
  • Water soluble epoxy ester copolymers for interior can use
    Patent number: 4404336
    Abstract: Epoxy ester copolymer dispersible in water with the aid of an amine, which may be ammonia, is provided by esterifying a polyepoxide having a 1,2-epoxy equivalency in excess of 1.0 and a molecular weight of from 350 to 8000 with at least 0.5% of the weight of the copolymer of a monoester of a saturated monohydric alcohol with a monoethylenically unsaturated dicarboxylic acid which resists homopolymerization. This polyepoxide ester is copolymerized with from 15% to 70% of monoethylenic monomers, based on the weight of the copolymer, these monoethylenic monomers including carboxyl functional monomer providing an acid number of from 20-150 in the copolymer.
    Type: Grant
    Filed: August 20, 1981
    Date of Patent: September 13, 1983
    Assignee: DeSoto, Inc.
    Inventors: Kazys Sekmakas, Raj Shah
  • Binder compositions and process for preparing said compositions
    Patent number: 4403046
    Abstract: Binders for foundry core sand and other binder applications are produced from acetophenone.
    Type: Grant
    Filed: October 5, 1981
    Date of Patent: September 6, 1983
    Assignee: The Quaker Oats Company
    Inventors: Hugh C. Anderson, James E. Doyle, Russell B. Lembke
  • Organic pigments
    Patent number: 4403062
    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: October 13, 1981
    Date of Patent: September 6, 1983
    Assignee: Hercules Incorporated
    Inventors: William W. Maslanka, Gavin G. Spence
  • Formation of polymeric fibers by a seeding technique
    Patent number: 4403069
    Abstract: Polymeric fibers are formed from solution by the influence of polymeric seeding materials under conditions of simultaneous cooling and agitation.
    Type: Grant
    Filed: June 5, 1981
    Date of Patent: September 6, 1983
    Assignee: Hughes Aircraft Company
    Inventors: L. Brian Keller, Robert K. Jenkins, Gary Luster