Group Iia Metal Atom Dnrm Patents (Class 524/456)
  • Polyurethane sealant compositions
    Patent number: 4318838
    Abstract: The subject matter of this invention pertains to polyurethane sealant compositions which are flexible, strong, and resistant to shrinkage. The sealants are prepared by reacting a mixture of polyether polyol and inorganic filler with a polyisocyanate. The polyurethane sealants are useful for making castings, for patching, and as heat barriers.
    Type: Grant
    Filed: April 14, 1980
    Date of Patent: March 9, 1982
    Assignee: BASF Wyandotte Corporation
    Inventors: James A. Gallagher, Bernardas Brizgys