Patents by Inventor Peter J. Ansell

Peter J. Ansell has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Polymerization of butadiene
    Patent number: 5017539
    Abstract: A process for preparing a catalyst for the polymerization of butadiene to obtain a polymer containing a very high content of cis isomer in which a specified neodymium carboxylate, an aluminium hydrocarbyl or aluminium hydrocarbyl hydride and a source of halogen are contacted using a particular procedure.
    Type: Grant
    Filed: December 22, 1989
    Date of Patent: May 21, 1991
    Assignee: Enichem Elastomers Ltd.
    Inventors: Derek K. Jenkins, Peter J. Ansell