Patents by Inventor Marc R. Kuhnhein

Marc R. Kuhnhein 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).

  • Butyl rubber compositions having improved adhesion to polyester
    Patent number: 5021509
    Abstract: The present invention provides for an improved butyl rubber composition which exhibits improved adhesion to pre-treated polyester textile materials, while at the same time important physical properties of cured butyl rubber such as modulus, tensile strength and elongation are maintained or even enhanced. The vulcanizable composition of the invention is based on a blend of butyl rubber and minor amounts of a copolymer of ethylene with a lower alkyl acrylate or methacrylate, or a terpolymer of ethylene, a lower alkyl acrylate or methacrylate and acrylic or methacrylic acid. The composition of this invention exhibits improved adhesion to pre-treated polyester textile materials.The invention also relates to laminates of the butyl rubber compositions of this invention with polyester textile materials such as yarns and woven fabrics.
    Type: Grant
    Filed: September 1, 1989
    Date of Patent: June 4, 1991
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Robert C. Keller, Marc R. Kuhnhein