Patents by Inventor Peter N. Plimmer

Peter N. Plimmer 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).

  • Cured elastomers with improved high temperature tear strength
    Patent number: 4503192
    Abstract: Blends of elastomers of chlorinated or chlorosulfonated polyethylene and ultra high molecular weight, i.e. at least one million, when cured with conventional curing systems for the chlorinated or chlorosulfonated polyethylene have higher tear strengths at temperatures of about 150.degree. C. than do the unblended elastomers. The amount of polyethylene in the blend is 5 to 50 parts by weight per 100 parts by weight of elastomer. The blend, thus produced has a modulus (M.sub.100) of greater than 1000 psi prior to curing.
    Type: Grant
    Filed: January 6, 1984
    Date of Patent: March 5, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Herbert F. McShane, Jr., Peter N. Plimmer, Charles W. Stewart