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:
Mar. 11, 2025
Filed:
Jul. 18, 2022
Applicant:
Evonik Operations Gmbh, Essen, DE;
Assignee:
Evonik Operations GmbH, Essen, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G 59/54 (2006.01); C08G 59/24 (2006.01); C08G 59/42 (2006.01); C08G 59/50 (2006.01); C08G 59/58 (2006.01); C09D 5/00 (2006.01); C09D 163/00 (2006.01); C09J 163/00 (2006.01); C09K 3/10 (2006.01);
U.S. Cl.
CPC ...
C08G 59/54 (2013.01); C08G 59/245 (2013.01); C08G 59/4207 (2013.01); C08G 59/423 (2013.01); C08G 59/4261 (2013.01); C08G 59/4284 (2013.01); C08G 59/5026 (2013.01); C08G 59/504 (2013.01); C08G 59/5073 (2013.01); C08G 59/58 (2013.01); C09D 5/002 (2013.01); C09D 163/00 (2013.01); C09J 163/00 (2013.01); C09K 3/10 (2013.01); C09K 2200/0647 (2013.01);
Abstract
Epoxy curing agents are disclosed having an epoxy curing agent comprising at least one room temperature ionic liquid salt, the room temperature ionic liquid salt being a reaction product of (a) at least one polyalkylene polyamine compound represented by formula (I): wherein x, y, and z are integers of 2 and 3, m and n and integers of 1-3; and (b) an organic acid having pKa (the negative of the logarithm of the acid dissociation constant) less than 6. The liquid salt is a stable liquid at a temperature greater than 15° C. Curable epoxy-based compositions including the curing agent and articles formed by the curable epoxy-based compositions are also disclosed.