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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 12157839 B1

PDFFull Text
Date of Patent:
Dec. 03, 2024

Filed:

Jul. 25, 2019

Adhesive composition

Applicant:

Lg Chem, Ltd., Seoul, KR;

Inventors:

Min Jin Ko, Daejeon, KR;

Jae Ho Jung, Daejeon, KR;

Min A Yu, Daejeon, KR;

Min Kyoun Kim, Daejeon, KR;

Byung Kyu Cho, Daejeon, KR;

Taek Yong Lee, Daejeon, KR;

Dong Yong Kim, Daejeon, KR;

Assignee:

LG Chem, Ltd., Seoul, KR;

Attorney:

Lerner David LLP

Primary Examiner:

Patrick D Niland

Int. Cl.
CPC ...
C09J 163/00 (2006.01); C08G 18/24 (2006.01); C08G 18/28 (2006.01); C08G 18/32 (2006.01); C08G 18/48 (2006.01); C08G 18/66 (2006.01); C08G 18/73 (2006.01); C08G 59/40 (2006.01); C08L 63/00 (2006.01); C08L 75/08 (2006.01); C09J 7/20 (2018.01); C09J 7/38 (2018.01); C09J 11/06 (2006.01); C09J 11/08 (2006.01); C09J 175/04 (2006.01); C09J 175/08 (2006.01);
U.S. Cl.
CPC ...
C09J 163/00 (2013.01); C08G 18/24 (2013.01); C08G 18/2825 (2013.01); C08G 18/3206 (2013.01); C08G 18/4854 (2013.01); C08G 18/6674 (2013.01); C08G 18/73 (2013.01); C08G 59/4021 (2013.01); C08L 63/00 (2013.01); C08L 75/08 (2013.01); C09J 7/20 (2018.01); C09J 7/38 (2018.01); C09J 11/06 (2013.01); C09J 11/08 (2013.01); C09J 175/04 (2013.01); C09J 175/08 (2013.01); C09J 2409/00 (2013.01); C09J 2463/00 (2013.01); C09J 2475/00 (2013.01);
Abstract

The present application relates to an epoxy-based adhesive composition, which may include (a) one or more epoxy resins, (b) a urethane resin having a weight average molecular weight (Mw) of 30,000 or less, and having a polytetrahydrofuran unit, (c) a core-shell rubber in the form of secondary particles in which two or more core-shell rubbers in the form of primary particles are aggregated and (d) one or more epoxy curing agents. The adhesive composition of the present application can provide excellent adhesion strength, peel strength and impact-resistant strength uniformly over a wide temperature range.

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