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:
Nov. 19, 2019
Filed:
Jul. 14, 2015
Applicant:
Nitto Denko Corporation, Ibaraki-shi, Osaka, JP;
Inventors:
Kenichi Nishikawa, Ibaraki, JP;
Takuma Ogawa, Ibaraki, JP;
Assignee:
NITTO DENKO CORPORATION, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 7/12 (2006.01); B32B 27/30 (2006.01); C09J 11/08 (2006.01); C09J 133/00 (2006.01); C08L 33/08 (2006.01); C08L 93/00 (2006.01); C08L 93/04 (2006.01); C09J 133/08 (2006.01); B32B 27/08 (2006.01); B32B 27/20 (2006.01); B32B 3/26 (2006.01); C09J 7/20 (2018.01); C09J 7/38 (2018.01); C09J 7/24 (2018.01);
U.S. Cl.
CPC ...
B32B 27/308 (2013.01); B32B 3/26 (2013.01); B32B 7/12 (2013.01); B32B 27/08 (2013.01); B32B 27/20 (2013.01); B32B 27/30 (2013.01); C08L 33/08 (2013.01); C08L 93/00 (2013.01); C08L 93/04 (2013.01); C09J 7/20 (2018.01); C09J 7/24 (2018.01); C09J 7/385 (2018.01); C09J 11/08 (2013.01); C09J 133/00 (2013.01); C09J 133/08 (2013.01); B32B 2264/101 (2013.01); B32B 2405/00 (2013.01); C09J 2205/114 (2013.01); C09J 2433/00 (2013.01); C09J 2433/006 (2013.01);
Abstract
Provided is a PSA sheet that shows high peel strength to low polar adherends while having excellent flexibility. This invention provides a PSA sheet that comprises a PSA layer (A) constituting an adhesive face and a viscoelastic layer (B) supporting the PSA layer (A). In the PSA sheet, the viscoelastic layer (B) comprises hollow particles or have bubbles. The PSA layer (A) comprises an acrylic polymer (a) as the base polymer. The copolymerization ratio of an acidic group-containing monomer in the acrylic polymer (a) is 5% by weight or lower.