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:
Feb. 06, 2024
Filed:
Oct. 22, 2020
Applicant:
Evonik Operations Gmbh, Essen, DE;
Inventors:
Gauri Sankar Lal, Whitehall, PA (US);
Michael Cook, Macungie, PA (US);
Assignee:
Evonik Operations GmbH, Essen, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G 59/62 (2006.01); C08G 59/40 (2006.01); C08G 59/50 (2006.01); C09D 163/00 (2006.01);
U.S. Cl.
CPC ...
C08G 59/623 (2013.01); C08G 59/4014 (2013.01); C08G 59/5033 (2013.01); C09D 163/00 (2013.01);
Abstract
The present invention relates to a new structural class of phenalkamine, phenalkamine curing agent compositions, methods of making such phenalkamine, and methods of making such compositions. The phenalkamine curing agent compositions of the present invention can be prepared by reacting cardanol with an aldehyde compound and a mixture of methylene bridged poly(cycloaliphatic-aromatic)amines. These curing-agent compositions may be used to cure, harden, and/or crosslink an epoxy resin.