Patents Assigned to Metalweld, Inc.
  • Method of curing isocyanate-terminated polyurethane prepolymers for use in solventless spray applications
    Patent number: 4267299
    Abstract: Solventless compositions for preparing sprayable polyurethanes and poly(urea)urethanes by spraying a mixture of:(a) An isocyanate-terminated prepolymer or quasi-prepolymer; and(b) A curing agent comprising a relatively highly reactive polyol or polyamine or combination thereof and at least about 20% by weight of a reactive "filler" comprising a polyol having an equivalent weight in the range from about 300 to about 2,000.
    Type: Grant
    Filed: June 29, 1979
    Date of Patent: May 12, 1981
    Assignee: Metalweld, Inc.
    Inventor: Sixtus J. Oechsle, III