Patents by Inventor Mark C. Chen

Mark C. Chen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Cross-linked melt processible fire-retardant ethylene polymer compositions
    Patent number: 5378539
    Abstract: This invention provides a flame-retardant thermoplastic composition comprising a blend of ethylene copolymers, polyethylene, metal hydroxides and optionally a coupling agent and a compatibilizing agent, which is mildly cross-linked during blending with a peroxide and a polyfunctional compound. The composition has superior flame retardancy and a good balance of mechanical properties and electrical insulating properties, and maintains melt processibility for use as a sheath or insulation for wires and cables.
    Type: Grant
    Filed: March 17, 1992
    Date of Patent: January 3, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Mark C. Chen
  • Carboxylated neoprene latex containing alkali-pretreated zinc oxide or hydroxide
    Patent number: 4130528
    Abstract: Neoprene compositions containing a latex of a copolymer of chloroprene with an .alpha.,.beta.-ethylenically unsaturated carboxylic acid, such as methacrylic or acrylic acid, the polymerization being conducted in the presence of polyvinyl alcohol, and zinc oxide or zinc hydroxide which has been previously contacted with an alkali metal hydroxide are particularly well suited for use in contact adhesives.
    Type: Grant
    Filed: November 2, 1977
    Date of Patent: December 19, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Mark C. Chen