Patents Assigned to Petrokleen, Ltd.
  • Polymeric-amine fuel and lubricant additive
    Patent number: 5962738
    Abstract: The present invention relates to an improved method of synthesizing polyamines, the improvement comprising producing polyamines having an increased nitrogen content. It concerns the improved fuel additives thereby produced, and the resultant improved fuel composition which comprises an admixture of said fuel additive and a gasoline.
    Type: Grant
    Filed: June 16, 1998
    Date of Patent: October 5, 1999
    Assignee: Petrokleen, Ltd.
    Inventors: Donald E. Koehler, William J. Claffey
  • Method of synthesizing pure additives and the improved compositions thereby produced
    Patent number: 5559270
    Abstract: An improved process of synthesizing gasoline soluble polyolefinic amines or polyether amines comprising the steps of reacting polyolefinic halides or polyether halides with polyamines in a specific sequence of reactions; distilling off non-reactive polyamine; neutralizing the reaction mixture; recovering polyamine(s) and water; and separating polyolefinic amines from the solids with simple filtration or centrifuge or decanting.
    Type: Grant
    Filed: December 15, 1994
    Date of Patent: September 24, 1996
    Assignee: Petrokleen, Ltd.
    Inventors: Donald E. Koehler, William J. Claffey