Patents by Inventor Charles P. Rader

Charles P. Rader 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).

  • Method of treating diene rubber and improved rubber compositions
    Patent number: 4513110
    Abstract: Treatment of diene rubber with a diketo compound, in which the keto groups are part of a six-carbon hydrocarbon ring containing carbon-to-carbon unsaturation, or a tautomer of the compound, is performed at temperatures above 130.degree. C. Rubber compositions treated in this manner exhibit increased green strength, decreased plasticity, and, when vulcanized, decreased hysteresis.
    Type: Grant
    Filed: June 9, 1983
    Date of Patent: April 23, 1985
    Assignee: Monsanto Company
    Inventor: Charles P. Rader
  • Method of treating diene rubber with amino- and hydroxy aryl compounds
    Patent number: 4499243
    Abstract: Treatment of diene rubber with a compound of the formula ##STR1## wherein X and Y are --OH or --NH.sub.2 and R and R' are hydrogen, --OH, NH.sub.2 or non-reactive substituents is performed at temperatures above 130.degree. C. Rubber compositions treated in this manner exhibit increased green strength, decreased plasticity, and, when vulcanized, decreased hysteresis.
    Type: Grant
    Filed: November 7, 1983
    Date of Patent: February 12, 1985
    Assignee: Monsanto Company
    Inventor: Charles P. Rader
  • Method for rubber treatment
    Patent number: 4410656
    Abstract: The method of masticating diene rubber in the presence of maleic acid or maleic anhydride together with sulfur or an organic sulfur compound capable of generating a thiyl radical is shown.Improved tack, green strength or both are realized in the treated diene rubber.
    Type: Grant
    Filed: May 3, 1982
    Date of Patent: October 18, 1983
    Assignee: Monsanto Company
    Inventors: Aubert Y. Coran, Charles P. Rader, Chester D. Trivette, Jr.