Patents Assigned to CK Witco
  • Polyurethane prepared from sorbitol-branched polyesters
    Patent number: 6420446
    Abstract: Polyurethanes synthesized from sorbitol-branched polyester made by esterification of a diacid (or anhydride thereof diol, and sorbitol (or mixtures of same with other polyols).
    Type: Grant
    Filed: March 27, 2000
    Date of Patent: July 16, 2002
    Assignee: CK Witco
    Inventor: Wally Liyuan Chang