Patents by Inventor Ronald T. Cash, Jr.

Ronald T. Cash, Jr. 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).

  • Reaction product of phenol-aldehyde with polyamine(-epoxy adduct) and proton donor
    Patent number: 6420496
    Abstract: A curing agent for epoxy resins is prepared by (1) reacting a phenol and an aldehyde in the presence of a basic catalyst to form a first reaction product, (2) reacting the first reaction product with a polyamine or a polyamine-epoxy adduct to form a second reaction product containing unreacted primary amine groups, and (3) reacting the second reaction product with a proton donor compound having a pKa value of 11 or less to form the curing agent.
    Type: Grant
    Filed: October 8, 1999
    Date of Patent: July 16, 2002
    Assignee: Cognis Corporation
    Inventors: Robert M. Moon, Shailesh Shah, Anbazhagan Natesh, Gaetano D. DeAngelis, Joseph L. Mulvey, Ronald T. Cash, Jr.
  • Polyamines and coating compositions with enhanced resistance to yellowing
    Patent number: 6365708
    Abstract: This invention relates to novel polyamines which are the reaction product of A) at least one nonaromatic diamine containing from 2 to 40 carbon atoms, wherein the amine groups are primary amine groups; and B) at least one epihalohydrin of the formula  where R is hydrogen or methyl and X is chlorine or bromine; and the coatings resulting from the reaction between the above reaction product and nonaromatic epoxy resins.
    Type: Grant
    Filed: December 20, 1999
    Date of Patent: April 2, 2002
    Assignee: Cognis Corporation
    Inventors: Shailesh Shah, Anbazhagan Natesh, Joseph Mulvey, Ronald C. LaFreeda, Gaetano D. DeAngelis, Ronald T. Cash, Jr.