Patents by Inventor Morgan L. Gibbs

Morgan L. Gibbs 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).

  • Propylene polymer compositions having improved color and stabilizers therefor.
    Patent number: 5574082
    Abstract: Useful stabilizer combinations and propylene polymer compositions stabilized therewith having improved resistance to discoloration upon processing are provided. The stabilizer combinations of the invention are comprised of a mixture of calcium salts of stearic acid and lactic acid and a tocopherol-containing mixture consisting essentially of .alpha.-tocopherol, glycerin, polyethylene glycol having an average molecular weight of about 300 and glycerol monocaprylate. Propylene homopolymers and random, block and impact copolymers of propylene are stabilized in accordance with the invention.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: November 12, 1996
    Assignee: Quantum Chemical Company
    Inventors: Douglas D. Keller, Morgan L. Gibbs