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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 9562172 B1

PDFFull Text
Date of Patent:
Feb. 07, 2017

Filed:

Feb. 14, 2013

Photocurable sheet-type adhesive composition for optical use

Applicant:

Three Bond Fine Chemical Co., Ltd., Kanagawa, JP;

Inventors:

Yoshiaki Koga, Kanagawa, JP;

Yoshihide Arai, Kanagawa, JP;

Takashi Nemoto, Kanagawa, JP;

Assignee:

THREE BOND FINE CHEMICAL CO., LTD., Kanagawa, JP;

Attorney:

Dickinson Wright PLLC

Primary Examiner:

Thao T Tran

Int. Cl.
CPC ...
C09J 7/00 (2006.01); C08G 18/67 (2006.01); C08G 18/75 (2006.01); C08F 290/06 (2006.01); C09J 11/06 (2006.01); C09J 109/00 (2006.01); C09J 153/00 (2006.01); C09J 171/12 (2006.01); C09J 175/16 (2006.01); C08F 299/06 (2006.01); C09J 187/00 (2006.01); C08F 220/28 (2006.01); C09J 175/14 (2006.01);
U.S. Cl.
CPC ...
C09J 7/00 (2013.01); C08F 290/06 (2013.01); C08F 299/06 (2013.01); C08G 18/672 (2013.01); C08G 18/755 (2013.01); C09J 11/06 (2013.01); C09J 109/00 (2013.01); C09J 153/00 (2013.01); C09J 171/12 (2013.01); C09J 175/16 (2013.01); C09J 187/005 (2013.01); C08F 2220/285 (2013.01); C09J 175/14 (2013.01); C09J 2433/00 (2013.01); C09J 2471/00 (2013.01); C09J 2475/00 (2013.01); Y10T 428/31551 (2015.04);
Abstract

An object of the present invention is to provide a photocurable sheet-type adhesive composition for optical use, which is used for bonding cover glass and a touch panel, a touch panel and a display module, or the like, and has high appearance reliability and storage stability even under high temperature and high humidity. The present invention is a photocurable sheet-shape adhesive for optical use, which contains the following components (A) to (D): (A) 100 parts by mass of a urethane (meth)acrylate oligomer having a weight average molecular weight of 20,000 to 100,000; (B) 3 to 70 parts by mass of a phenoxy resin having a glass transition temperature of 50 to 120° C.; (C) 0.1 to 10 parts by mass of a photopolymerization initiator; and (D) 1 to 50 parts by mass of a (meth)acrylate monomer which has 8 to 30 repeated blocks having an ether linkage in the molecule and containing at least one (meth)acryloyl group in the molecule.

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