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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 10768473 B1

PDFFull Text
Date of Patent:
Sep. 08, 2020

Filed:

Mar. 23, 2016

Pressure-sensitive-adhesive composition, pressure-sensitive-adhesive layer, pressure-sensitive-adhesive-layer-attached polarizing film, and image display device

Applicant:

Nitto Denko Corporation, Ibaraki-shi, Osaka, JP;

Inventors:

Masakuni Fujita, Ibaraki, JP;

Tomoyuki Kimura, Ibaraki, JP;

Yuusuke Toyama, Ibaraki, JP;

Assignee:

NITTO DENKO CORPORATION, Ibaraki-shi, Osaka, JP;

Attorney:

Westerman, Hattori, Daniels & Adrian, LLP

Primary Examiner:

Sophie Hon

Int. Cl.
CPC ...
G02F 1/1335 (2006.01); B32B 7/02 (2019.01); B32B 27/00 (2006.01); G02B 5/30 (2006.01); C09J 133/00 (2006.01); C09J 7/38 (2018.01); B32B 7/12 (2006.01); B32B 27/06 (2006.01); C09J 133/08 (2006.01); C08K 5/5435 (2006.01);
U.S. Cl.
CPC ...
G02F 1/133528 (2013.01); B32B 7/02 (2013.01); B32B 7/12 (2013.01); B32B 27/00 (2013.01); B32B 27/06 (2013.01); C09J 7/385 (2018.01); C09J 133/00 (2013.01); C09J 133/08 (2013.01); G02B 5/30 (2013.01); G02B 5/3025 (2013.01); G02B 5/3033 (2013.01); B32B 2307/202 (2013.01); B32B 2307/412 (2013.01); B32B 2307/42 (2013.01); C08K 5/5435 (2013.01); C09J 2203/318 (2013.01); C09J 2205/102 (2013.01); C09J 2433/00 (2013.01); G02F 2202/28 (2013.01); Y10T 428/1041 (2015.01); Y10T 428/1059 (2015.01); Y10T 428/1077 (2015.01);
Abstract

An object of the present invention is to provide a pressure-sensitive-adhesive composition for forming a pressure-sensitive-adhesive layer capable of keeping a high endurance even when this layer is exposed to a heated environment or allowed to stand still for a long term. Another object of the invention is to provide a pressure-sensitive-adhesive layer formed from the pressure-sensitive-adhesive composition, a pressure-sensitive-adhesive-layer-attached polarizing film having the pressure-sensitive-adhesive layer, and an image display device including the pressure-sensitive-adhesive-layer-attached polarizing film. The composition is a pressure-sensitive-adhesive composition including a (meth)acryl-based polymer, and an oligomer epoxy-group-containing silane coupling agent having an epoxy equivalent of 250 to 600 g/mol.

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