Patents Examined by Ralph H. Bean
  • Polyurethane block copolymer
    Patent number: 5368943
    Abstract: A silane-capped polyurethane block copolymer comprising at least one polyester block and at least one polyacrylate block is disclosed. The copolymer can be used in coatings, and is particularly useful as a primer coating, especially as a primer for non-porous surfaces to which adhesives will be applied.
    Type: Grant
    Filed: December 20, 1991
    Date of Patent: November 29, 1994
    Assignee: Adco Products, Inc.
    Inventors: Jamil Baghdachi, Cheryl Van Valkenburg