Patents Examined by V. Pittoke
  • Alkyl-substituted hydroquinone carbonate esters as stabilizers for olefin polymers
    Patent number: 4209431
    Abstract: Alkyl-substituted hydroquinone carbonate esters are provided which enhance the resistance of olefin polymers to oxidative and thermal degradation, as well as olefin polymer compositions containing such alkyl-substituted hydroquinone carbonate esters.
    Type: Grant
    Filed: February 3, 1978
    Date of Patent: June 24, 1980
    Assignee: Witco Chemical Corporation
    Inventors: John R. Clark, Michael H. Fisch