Patents Examined by Paul Thilbodeau
  • Abrasion resistant urethane coatings
    Patent number: 6228433
    Abstract: A radiation curable and abrasion resistant coating composition is provided comprising: (a) 70% to 98% by weight of an urethane-acrylate oligomer; (b) 2% to 30% of fine particles of a filler capable of imparting abrasion resistance having an average particle size in the range of 1-20 microns; (c) optionally a reactive diluent; and (d) optionally an synthetic resin. The coatings when applied to wood floorings impart superior abrasion resistance.
    Type: Grant
    Filed: May 4, 1998
    Date of Patent: May 8, 2001
    Assignee: PermaGrain Products, Inc.
    Inventor: Alvin E. Witt