Patents Examined by Thomas Hamilton, III
  • Patent number: 5380796
    Abstract: Graft copolymers are prepared by the reaction of an olefin polymer such as polyethylene or polypropylene with an ethylenically unsaturated t-alkylcarbamate compound. Said graft copolymers are capable of reaction with functionalized polyphenylene ethers to produce compatibilized polyphenylene ether-olefin polymer compositions.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: January 10, 1995
    Assignee: General Electric Company
    Inventors: John R. Campbell, James R. Presley
  • Patent number: 5376723
    Abstract: The subject invention is directed to a thermoplastic polymer blend of polyurethane and nitrile rubber having a Shore A hardness of about 55 to 70. The thermoplastic polyurethane component includes at least about 50 weight percent (wt. %) polyisocyanate; the nitrile rubber component includes about 34 mole percent (mol %) acrylonitrile; and, the ratio between the thermoplastic polyurethane component and the nitrile rubber component is about 30:70 to 40:60 volume percentage (vol %).The invention also provides a process for making a thermoplastic polyurethane blend having a Shore A hardness of about 55 to 70; prepared by mixing and kneading about about 180.degree. to 215.degree. C., polyurethane component including at least about 50 percent by weight polyisocyanate with a nitrile rubber having a viscosity of M.sub.L 1+4,100.degree. C.=50 and including about 34 mole percent (mol %) acrylonitrile in a ratio of polyurethane: nitrile rubber of about 30:70 to 40:60 percent by volume (% vol).
    Type: Grant
    Filed: April 29, 1993
    Date of Patent: December 27, 1994
    Assignee: Firma Carl Freudenberg
    Inventors: Ulrike Vogt, Wolffried Werneis, Gunter Schuhmacher
  • Patent number: 5376724
    Abstract: Improved thermoplastic compositions based on polyphenylene ether are disclosed. These compositions contain a resinous additive derived from a mixture which comprises aromatic monomers, such as a mixture of styrene and alpha methyl styrene. The compositions are characterized by improved melt flow, along with the substantial maintenance of other important properties, such as impact strength and heat distortion temperature.
    Type: Grant
    Filed: January 10, 1994
    Date of Patent: December 27, 1994
    Assignee: General Electric Company
    Inventors: Christian M. E. Bailly, William R. Haaf
  • Patent number: 5374694
    Abstract: A curable polymer composition comprising a polyarylsulphone thermoplastic component and a polymerizable cyanate ester thermoset component.
    Type: Grant
    Filed: May 3, 1993
    Date of Patent: December 20, 1994
    Assignee: ICI Composites Inc.
    Inventors: Paul D. MacKenzie, Robin K. Maskell
  • Patent number: 5369170
    Abstract: It is herein disclosed a composite system consisting essentially of a polyketone polymer and an aminated polyolefin, produced by reacting a polyolefin with excess diamine to form an imide with a free primary amine, and causing the primary amine to react with a polyketone chain to form a pyrrole. These reactions can occur during inter alia a co-extrusion hot coating application or blending process. In all cases, compatibilization is achieved by the formation of polyketone/polyolefin graft copolymers at the interface of the polymers.
    Type: Grant
    Filed: December 13, 1993
    Date of Patent: November 29, 1994
    Assignee: Shell Oil Company
    Inventor: Donald H. Weinkauf
  • Patent number: 5369173
    Abstract: A resin composition is disclosed, which comprises(A) 100 parts by weight of(a) 1 to 50% by weight of polyphenylene ether or polyphenylene ether-containing resin composition,(b) 10 to 90% by weight of propylene polymer, except a propylene polymer modified with an oxygen-containing unsaturated compound,(c) 10 to 40% by weight of propylene polymer modified with an oxygen-containing unsaturated organic compound, and(d) 0 to 30% by weight of rubber-like substance which is elastic at room temperature, and(B) 3 to 60 parts by weight of(e) glass fiber. The resin composition has the remarkable effect that it not only has favorite mold processability but also is superior in balance among various physical properties of shaped articles resulting therefrom.
    Type: Grant
    Filed: January 19, 1993
    Date of Patent: November 29, 1994
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Motonobu Furuta
  • Patent number: 5369180
    Abstract: Improved compositions comprise miscible polymer blends of a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon with a styrene/acrylonitrile copolymer rich in acrylonitrile.
    Type: Grant
    Filed: August 22, 1991
    Date of Patent: November 29, 1994
    Assignee: Shell Oil Company
    Inventors: Joseph M. Machado, Raymond N. French
  • Patent number: 5360871
    Abstract: An improved vinyl chloride resin-based composite material is provided by melt-mixing a vinyl chloride resin with a polymeric polyol of 300-10,000 MW and a polyisocyanate having at least three isocyanate group under shearing force while allowing said polyol and polyisocyanate to react. The composite material has a content of tetrahydrofuran-insolubles of about 5-55% by weight. The composite material exhibits chemical and physical properties suitable for use in packing and sealing applications.
    Type: Grant
    Filed: February 5, 1993
    Date of Patent: November 1, 1994
    Assignees: Tosoh Corporation, Nippon Polyurethane Industry Co.
    Inventors: Kentaro Iwanaga, Kiyoshi Sakai, Noriyoshi Yano
  • Patent number: 5360866
    Abstract: A thermoplastic resin composition comprising (A) from about 10 to about 90% by weight of a hydroxyalkylated polyphenylene ether represented by formula (I): ##STR1## wherein A represents a residue of a polyphenylene ether from which a hydroxyl group is removed; and n represents an integer of from 1 to 10, and (B) from about 10 to about 90% by weight of a resin selected from a carboxyl-containing olefin resin, an epoxy-containing olefin resin, a hydroxyl-containing olefin resin, a polyamide resin, and a saturated polyester resin, provided that when (B) is the olefin resin, the hydroxyalkylated polyphenylene ether also can be represented by formula (II): ##STR2## wherein A is defined as above; X represents an oxygen atom or a nitrogen atom; R.sup.1 represents an alkylene group having from 1 to 12 carbon atoms; R.sup.2 and R.sup.3 each represents a hydrocarbon group having from 1 to 6 carbon atoms; s represents 1 when X is an oxygen atom, or 2 when X is a nitrogen atom; and t represents an integer of from 1 to 3.
    Type: Grant
    Filed: April 20, 1993
    Date of Patent: November 1, 1994
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Yusuke Arashiro, Michiharu Kihara, Haruo Ohmura, Fumiyoshi Yamada
  • Patent number: 5359005
    Abstract: Stable, non-gelled, one-package coating compositions capable of being cured at ambient conditions to produce durable coatings comprising at least one polymer and/or oligomer having a molecular weight of at least about 100 and bearing at least two specific aziridine moieties, at least two specific carbodiimide moieties or combinations thereof and at least one polymer and/or oligomer having a molecular weight of at least about 100 and bearing at least two covalently blocked carboxylic acid moieties. Process for coating a substrate using such compositions are also claimed.
    Type: Grant
    Filed: December 29, 1992
    Date of Patent: October 25, 1994
    Assignee: PPG Industries, Inc.
    Inventors: Charles M. Kania, Padmanabhan Sundararaman, David T. McKeough, Gregory J. McCollum, James B. O'Dwyer
  • Patent number: 5356992
    Abstract: Polymer compositions containing a polyphenylene etherpolyolefin copolymer are obtained by reactive melt mixing olefin-(alkyl)acrylic acid copolymer with a polyphenylene ether and a carboxylic anhydride. The compositions are used in many commercial applications requiring high temperature resistance including formation of films, fibers and molded articles with excellent surface appearance.
    Type: Grant
    Filed: February 26, 1993
    Date of Patent: October 18, 1994
    Assignee: Enichem S.p.A.
    Inventors: Steve G. Cottis, Kavilipalayam M. Natarajan
  • Patent number: 5357003
    Abstract: The properties of polyphenylene ether-polyamide mixtures can be improved by the addition of polysiloxane compounds.
    Type: Grant
    Filed: November 15, 1989
    Date of Patent: October 18, 1994
    Assignee: General Electric Company
    Inventors: Hendrikus J. E. Smits, Roelof van der Meer, Adelbert H. L. Groothuis
  • Patent number: 5352737
    Abstract: The present invention provides a resin composition which is excellent in adhesion to coatings and which comprises the following components:(a) a polyphenylene ether in an amount of 10-90 parts by weight,(b) a polyamide in an amount of 90-10 parts by weight,(c) a compatibilizing agent in an amount of 0.01-10 parts by weight based on 100 parts by weight of ((a)+(b)),(d) an unsaturated acid salt of a metal belonging to Groups I-III of the periodic table in an amount of 0.2-10 parts by weight based on 100 parts by weight of ((a)+(b)), and(e) a rubber material in an amount of 0-100 parts by weight based on 100 parts by weight of ((a)+(b)).
    Type: Grant
    Filed: December 1, 1993
    Date of Patent: October 4, 1994
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Kenji Nagaoka, Yasuro Suzuki, Kaoru Kitadono
  • Patent number: 5346959
    Abstract: An antistatic agent for thermoplastic polymers is provided wherein the antistatic agent is comprised of a functionalized alkylene oxide polymer and optionally a minor amount of an alkali or alkaline earth metal salt capable of complexing with the functionalized alkylene oxide polymer and wherein the thermoplastic polymers include styrenic polymers such as ABS; blends of an ABS copolymer and a styrene-maleic anhydride copolymer; or nylon 6.
    Type: Grant
    Filed: July 21, 1993
    Date of Patent: September 13, 1994
    Assignee: Monsanto Company
    Inventors: Goman (Gomez) Peter M., Kishore Udipi, Lionel R. Stebbins
  • Patent number: 5346952
    Abstract: Disclosed is a thermoplastic resin composition comprised of (A) 10-60 weight parts of a polyphenylene ether resin, (B) 20-70 weight parts of (b-1) an aromatic vinyl resin and/or (b-2) a copolymer of an aromatic vinyl monomer with a heterocyclic compound having a vinyl group and containing nitrogen as the hetero atom and (C) 10-60 weight parts of (c-1) a graft copolymer obtained by polymerizing an aromatic vinyl monomer, optionally with other vinyl monomer, in the presence of a butadiene type rubbery polymer or (c-2) a graft copolymer obtained by polymerizing an aromatic vinyl monomer and a heterocyclic compound having a vinyl group and containing nitrogen as the hereto atom, optionally with other ethylenically unsaturated compound, in the presence of a butadiene type rubbery polymer, wherein at least one of the components (B) and (C) is a polymer of the nitrogen-containing heterocyclic compound, and the total amount of the components (A), (B) and (C) is 100 parts by weight.
    Type: Grant
    Filed: April 30, 1993
    Date of Patent: September 13, 1994
    Assignee: Mitsubishi Rayon Company Ltd.
    Inventors: Masafumi Hongo, Hideki Yano, Hideyuki Shigemitsu
  • Patent number: 5346966
    Abstract: Linear stereo block copolymers are disclosed. The polymers comprise a plurality of alternating polymeric blocks of amorphous copolymers of L-lactide and D-lactide with semicrystalline blocks of either L-lactide homopolymer or D-lactide homopolymer. The molecular weight can be built up by either of two techniques. The first technique is to use a chain extending agent such as a diacyl chloride or a diisocyanate to link a plurality of the preformed block copolymers. The second technique is to polymerize additional alternating amorphous and semicrystalline segments or blocks onto the original alternating block copolymers.
    Type: Grant
    Filed: October 26, 1993
    Date of Patent: September 13, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Maria Spinu
  • Patent number: 5344875
    Abstract: The present invention provides a polyoxymethylene resin composition which is excellent in wear resistance and is suitable as materials for various sliding parts. The composition comprises (A) 65-98.8% by weight of a polyoxymethylene resin, (B) 0.2-5.0% by weight of a polyfunctional isocyanate compound, (C) 0.5-20% by weight of an olefin polymer containing 30% by weight or more of ethylene and a functional group containing an active hydrogen, and (D) 0.2-10% by weight of polyethylene.
    Type: Grant
    Filed: March 1, 1993
    Date of Patent: September 6, 1994
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventor: Masahiko Niino
  • Patent number: 5344892
    Abstract: A molding composition comprising a thermoplastic polyester in an alkali metal salt of polyphenylene ether as a nucleating agent.
    Type: Grant
    Filed: July 2, 1993
    Date of Patent: September 6, 1994
    Assignee: Enichem S.p.A.
    Inventors: Kavilipalayam M. Natarajan, Shilain D. Wu
  • Patent number: 5344882
    Abstract: Incorporation of a thermoplastic polyurethane and at least one thermoplastic crystalline polymer selected from nylon 6, nylon 612, polypropylene, and polyalkylene terephthalates containing at least one ethylene copolymer into polyacetal polymer results in blends characterized as having improved toughness, or impact strength, and improved elongation over that of a comparable blend of polyacetal and at least one of said crystalline polymers alone.
    Type: Grant
    Filed: January 27, 1993
    Date of Patent: September 6, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Edmund A. Flexman
  • Patent number: 5342888
    Abstract: A coating composition is disclosed, comprising from 50 to 80 parts by weight of an acrylic resin having a number-average molecular weight of from 1,800 to 8,000, a hydroxyl value of from 60 to 120, and an acid value of from 1 to 25 and from 50 to 20 parts by weight of a hardener consisting of blocked aliphatic polyfunctional isocyanates and/or blocked alicyclic polyfunctional isocyanates and an alkyl-etherified melamine resin, the proportion of said melamine resin to said isocyanates being from 50/50 to 95/5 by weight. And a coated article comprising the above coating composition and a method to form the coated film and the coated article are disclosed.
    Type: Grant
    Filed: October 29, 1993
    Date of Patent: August 30, 1994
    Assignee: Nippon Paint Co., Ltd.
    Inventor: Nobuhisa Sudo