The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 08, 2019
Filed:
Nov. 04, 2015
Applicant:
Evonik Degussa Gmbh, Essen, DE;
Inventors:
Gauri Sankar Lal, Whitehall, PA (US);
Sudhir Ananthachar, Hillsborough, NJ (US);
Stephen Michael Boyce, Bath, PA (US);
Assignee:
Evonik Degussa GmbH, Essen, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G 59/54 (2006.01); C09D 163/00 (2006.01); C07C 233/38 (2006.01);
U.S. Cl.
CPC ...
C08G 59/54 (2013.01); C07C 233/38 (2013.01); C09D 163/00 (2013.01);
Abstract
An epoxy curing agent is disclosed that can be obtained by reacting at least one carboxylic acid with at least one polyamine. The disclosed curing agent can be obtained by preparing an amidoamine with about 0.15 to about 0.30 molar excess of carboxylic acid.