Patents Assigned to Dupont Dow Elastomers L.L.S.
  • Thermally stable perfluoroelastomer composition
    Patent number: 6191208
    Abstract: Curable perfluoroelastomer compositions comprising A) a perfluoroelastomer having copolymerized units of tetrafluoroethylene, a perfluoro(vinyl ether), and a nitrile-containing cure site monomer, B) anhydrous silica, and C) a curing agent exhibit excellent thermal stability and reduced tendency to generate hydrogen fluoride under high temperature conditions.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: February 20, 2001
    Assignee: Dupont Dow Elastomers L.L.S.
    Inventor: Kohtaro Takahashi