Patents Assigned to Sac Membrane Products Corporation
  • Alkaline cell with graft polymer separator
    Patent number: 4287275
    Abstract: A cast film, sheet or coating of a cross-linked graft copolymer of an organic polymeric substrate and an ethylenically unsaturated organic monomer, which is useful as a ion-exchange membrane, particularly a separator for an alkaline battery. The graft copolymer is formed by initiating and effecting the graft copolymerization while the polymeric substrate and monomer are in solution.
    Type: Grant
    Filed: January 26, 1979
    Date of Patent: September 1, 1981
    Assignee: Sac Membrane Products Corporation
    Inventor: William J. Davis