Patents Examined by Y. Haris-Smith
  • Modified succinimides (II)
    Patent number: 4645515
    Abstract: Disclosed are polyamino alkenyl or alkyl succinimides which have been modified by treatment with a lactone to yield polyamino alkenyl or alkyl succinimides wherein one or more of the basic nitrogens of the polyamino moiety is substituted with a hydroxyalkylene carbonyl group. The additives so disclosed are useful as dispersants in lubricating oils, gasolines, marine crankcase oils and hydraulic oils.
    Type: Grant
    Filed: April 12, 1985
    Date of Patent: February 24, 1987
    Assignee: Chevron Research Company
    Inventor: Robert H. Wollenberg