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:
Dec. 20, 2022
Filed:
Dec. 15, 2017
Applicant:
Evonik Operations Gmbh, Essen, DE;
Inventors:
Gauri Sankar Lal, Whitehall, PA (US);
Sudhir Ananthachar, Hillsborough, NJ (US);
Stephen Michael Boyce, Bath, PA (US);
Assignee:
Evonik Operations GmbH, Essen, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G 59/54 (2006.01); C07C 231/02 (2006.01); C07C 233/36 (2006.01); C08G 59/22 (2006.01); C08G 69/28 (2006.01);
U.S. Cl.
CPC ...
C08G 59/54 (2013.01); C07C 231/02 (2013.01); C07C 233/36 (2013.01); C08G 59/22 (2013.01); C08G 69/28 (2013.01);
Abstract
Polyamide and amidoamine curing agents comprising a selectively modified amine. The selectively modified amine is formed by a substitution reaction between a polyamine and an epoxide, resulting in a multifunctional amine having a hydroxyl substituent. The curing agents are used to form epoxy resins having improved properties when cured.