Patents Examined by F. M. Teskia
  • Liquid aliphatic resins
    Patent number: 4902766
    Abstract: A light color aliphatic hydrocarbon petroleum resin including a piperylene component and a chain transfer agent component useful as a tackifying agent, especially with copolymers. The resin of the invention has a softening point of about 0.degree.-40.degree. C., a number average molecular weight of from 100 to about 900, a low Gardner color of about 3 or less, and is formed by the aluminum chloride catalyzed polymerization of a feed stream essentially free of butadiene.
    Type: Grant
    Filed: December 1, 1986
    Date of Patent: February 20, 1990
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Steven G. Hentges