Patents by Inventor Waddill: Harold G.

Waddill: Harold G. 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).

  • Imidazolidone polyetheramine strength enhancing additives of epoxy resin systems
    Patent number: 5422042
    Abstract: This invention discloses the composition and preparation of imidazolidone modified polyetheramines. The alkyl polyetheramine is derived from 2-isopropylaminoethylamine and urea. N-isopropyl-2-imidazolidone is the intermediate product, which is alkoxylated and aminated to prepare the N-isopropyl imidazolidone polyetheramine. This invention also discloses the composition and preparation of oxazolidinone modified polyetheramines by reductive amination of polyols derived from 4-ethyl-4-hydroxymethyl-2-oxazolidone. The products of this invention have been tested in epoxy resin applications and improved properties have been demonstrated. These products may also be useful in polyurea applications.
    Type: Grant
    Filed: November 19, 1993
    Date of Patent: June 6, 1995
    Assignee: Huntsman Corporation
    Inventors: Waddill: Harold G., Wei-Yang Su, Michael Cuscurida, Terry L. Renken