Patents Examined by C. A. Prezlock
  • Patent number: 4743391
    Abstract: A method for oxidatively degrading an olefinic polymer in the absence of molecular oxygen and utilizing an oxidant mixture of a peroxide and hydroperoxide is disclosed. Lubricating oils containing the products of the oxidation process as well as the products post-reacted with funtional group-containing compounds show improved viscosity index and dispersancy properties.
    Type: Grant
    Filed: March 28, 1983
    Date of Patent: May 10, 1988
    Assignee: Chevron Research Company
    Inventors: Chester D. Gordon, Gian L. Fagan