Patents Assigned to Polyvinyl Chemicals Inc.
  • Coating compositions
    Patent number: 4801644
    Abstract: Aqueous polyurethane dispersions useful as coating compositions wherein the polyurethane comprises the reaction product of(a) an isocyanate-terminated polyurethane prepolymer containing carboxylic acid salt groups formed by reacting:(i) a polyisocyanate component containing at least 1% by weight of diphenylmethane-2,4'-diisocyanate, and(ii) an active hydrogen containing component containing a polyol and a carboxy group containing diol or triol, and(b) an active hydrogen containing chain extender.
    Type: Grant
    Filed: October 3, 1986
    Date of Patent: January 31, 1989
    Assignee: Polyvinyl Chemicals Inc.
    Inventor: Richard G. Coogan