At Least One Reactant Which Forms Additional Polymer Contains A Carboxylic Acid Or Derivative Patents (Class 525/190)
  • Curable blends of chloroprene polymer and ethylene copolymer
    Patent number: 4275181
    Abstract: Curable blends of chloroprene polymers are obtained by modification with ethylene/carbon monoxide or sulfur dioxide copolymers containing an additional softening copolymerizable comonomer such as vinyl esters, alkyl acrylates and methacrylates, alkyl vinyl ether, acrylonitrile, methacrylonitrile etc. Modification with the ethylene copolymers results in improved processing, increased resistance to ozone and reduced cost.
    Type: Grant
    Filed: November 30, 1979
    Date of Patent: June 23, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: George L. Hoh
  • Resin composition
    Patent number: 4187358
    Abstract: A resin composition comprising(A) an aromatic copolyester derived from (i) a mixture of terephthalic acid and isophthalic acid and/or the functional derivatives thereof and (ii) a bisphenol and/or the functional derivatives thereof;(B) a polyamide; and(C) an ionomer.Molded articles prepared from the resin composition exhibit superior thermal stability, mechanical properties and molding characteristics, especially superior impact characteristics and relatively thin molded articles are resistant to flexing.
    Type: Grant
    Filed: December 28, 1978
    Date of Patent: February 5, 1980
    Assignee: Unitika Ltd.
    Inventors: Kayomon Kyo, Yasuhiko Asai, Sadao Kato, Tadashi Ishikura, Hiroshi Sugawara
  • Elastoplastic compositions of rubber and polyamide
    Patent number: 4173556
    Abstract: Elastoplastic compositions are described comprising blends of cross-linked rubber and thermoplastic polyamide.
    Type: Grant
    Filed: July 15, 1977
    Date of Patent: November 6, 1979
    Assignee: Monsanto Company
    Inventors: Aubert Y. Coran, Raman P. Patel