Patents Assigned to Union Optics Corporation
  • Hydrogels of unsaturated ester copolymers
    Patent number: 3947401
    Abstract: Bulk polymerized, water insoluble but water swellable polymer of monomers comprising water soluble monoester of acrylic or methacrylic acid with a polyhydric alcohol; and glycidyl methacrylate, and/or glycidyl acrylate, and/or glycidyl crotonate. The polymer may be swelled in aqueous solution to provide a transparent hydrogel having excellent physical properties, and suitable in an ophthalmic lens.
    Type: Grant
    Filed: July 17, 1973
    Date of Patent: March 30, 1976
    Assignee: Union Optics Corporation
    Inventor: Paul Stamberger