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. 11, 2020
Filed:
Nov. 04, 2016
Evonik Operations Gmbh, Essen, DE;
Shiying Zheng, Center Valley, PA (US);
Sudhir Ananthachar, Hillsborough, NJ (US);
Shafiq Nisarali Fazel, Allentown, PA (US);
Michael Ian Cook, DeMeern, NL;
Robert Marjo Theodoor Rasing, Didam, NL;
Wei Cao, Orefield, PA (US);
Edze Jan Tijsma, Zeist, NL;
Evonik Operations GmbH, Essen, DE;
Abstract
Amine-epoxy curing agents are disclosed including at least one saturated heterocyclic compound having two nitrogen heteroatoms according to formula (I) and at least one saturated fused bicyclic heterocyclic compound having three nitrogen heteroatoms according to formula (II): wherein X is independently selected from a hydrogen atom, a linear or branched Cto Calkyl group and a substituted or un-substituted phenyl group, Yis a direct bond or a divalent polyethylene polyamine group having 1 to 8 nitrogen atoms or a divalent polyethylene polyamine derivative having 1 to 8 nitrogen atoms, Yis a direct bond or a divalent polyethylene polyamine group having 1 to 7 nitrogen atoms and R is independently a hydrogen atom or a group selected from C-Clinear, cyclic, and branched alkyl, alkenyl, and alkaryl groups.