Patents Assigned to Chevron Chemical Corporation
  • Dispersant terpolymers
    Patent number: 5792729
    Abstract: A terpolymer having an average M.sub.n of from 600 to 100,000 is obtained by the terpolymerization of a 1-olefin having from 10 to 30 carbon atoms, maleic anhydride, and a 1,1 -disubstituted polyisobutylene having an average M.sub.n of from 500 to 5,000.
    Type: Grant
    Filed: August 20, 1996
    Date of Patent: August 11, 1998
    Assignee: Chevron Chemical Corporation
    Inventors: James J. Harrison, William R. Ruhe, Jr.