Patents by Inventor Gordon R. Humphreys

Gordon R. Humphreys 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 using mixed aliphatic/aromatic polycarbodiimides
    Patent number: 4587301
    Abstract: Mixed aliphatic/aromatic polycarbodiimides can be prepared by first heating aliphatic mono- and diisocyanates with a phospholene oxide catalyst and then feeding the aromatic mono and/or diisocyanates in an inert solvent to the reaction mixture. These polycarbodiimides find use in a method for cross-linking carboxylated latexes.
    Type: Grant
    Filed: November 29, 1984
    Date of Patent: May 6, 1986
    Assignee: Union Carbide Corporation
    Inventors: Stuart L. Watson, Jr., Gordon R. Humphreys
  • Method of making mixed aliphatic/aromatic polycarbodiimides
    Patent number: 4487964
    Abstract: Mixed aliphatic/aromatic polycarbodiimides can be prepared by first heating aliphatic mono- and diisocyanates with a phospholene oxide catalyst and then feeding the aromatic mono and/or diisocyanates in an inert solvent to the reaction mixture, thus preparing cross-linking agents for carboxylated latexes used in making roofing materials, hardboard, pressure sensitive adhesives and the like.
    Type: Grant
    Filed: February 24, 1983
    Date of Patent: December 11, 1984
    Assignee: Union Carbide Corporation
    Inventors: Stuart L. Watson, Jr., Gordon R. Humphreys