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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.:

US 10738147 B1

PDFFull Text
Date of Patent:
Aug. 11, 2020

Filed:

Aug. 07, 2017

N-hydroxyl ethyl piperidine (nhep): a novel curing agent for epoxy systems

Applicant:

Evonik Operations Gmbh, Essen, DE;

Inventors:

Pritesh G. Patel, Breinigsville, PA (US);

Gauri Sankar Lal, Whitehall, PA (US);

Douglas M. La Comare, Northampton, PA (US);

Assignee:

Evonik Operations GmbH, Essen, DE;

Attorneys:

Andrew H. Chung

Linda S. Li

Jason S. Ngui

Primary Examiner:

Michael J Feely

Int. Cl.
CPC ...
B32B 27/38 (2006.01); B32B 27/26 (2006.01); B32B 27/04 (2006.01); C08J 5/24 (2006.01); C08L 63/00 (2006.01); C08G 59/20 (2006.01); C08G 59/50 (2006.01); C08G 59/56 (2006.01); C08G 59/64 (2006.01); C08J 5/04 (2006.01); C08K 7/14 (2006.01);
U.S. Cl.
CPC ...
C08G 59/506 (2013.01); C08G 59/64 (2013.01); C08J 5/043 (2013.01); C08G 59/5026 (2013.01); C08J 2363/00 (2013.01); C08K 7/14 (2013.01);
Abstract

The present invention relates to an amine-based curing agent comprising at least 1% by weight of at least one tertiary amine and, optionally, primary and/or secondary amines. The tertiary amine is preferably an N-substituted piperidine tertiary amine and, more preferably, N-hydroxyethyl piperidine (NHEP). The present invention also relates to an epoxy resin composition formed using this amine-based curing agent and a method of making the epoxy resin composition. These tertiary amines enhance desirable properties of epoxy resin compositions without the negative impact on mechanical properties in the cured product normally seen with tertiary amine-based curing agents.

Find Patent Forward Citations

Patel, Pritesh. (2020). N-hydroxyl ethyl piperidine (nhep): a novel curing agent for epoxy systems (U.S. Patent No. 10738147). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10738147

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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