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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 11421134 B1

PDFFull Text
Date of Patent:
Aug. 23, 2022

Filed:

Dec. 07, 2017

Pressure-sensitive adhesive composition and use therefor

Applicant:

Toagosei Co. Ltd., Tokyo, JP;

Inventors:

Nobuyuki Takeya, Nagoya, JP;

Kenichi Nakamura, Nagoya, JP;

Yusuke Hashimoto, Nagoya, JP;

Assignee:

TOAGOSEI CO., LTD., Tokyo, JP;

Attorney:

Oliff PLC

Primary Examiner:

Frank D Ducheneaux

Int. Cl.
CPC ...
C09J 133/06 (2006.01); C09J 133/08 (2006.01); C09J 133/10 (2006.01); C09J 133/12 (2006.01); C09J 133/14 (2006.01); C09J 7/38 (2018.01); C09J 7/20 (2018.01);
U.S. Cl.
CPC ...
C09J 133/06 (2013.01); C09J 7/20 (2018.01); C09J 7/385 (2018.01); C09J 133/08 (2013.01); C09J 133/10 (2013.01); C09J 133/12 (2013.01); C09J 133/14 (2013.01); C09J 2301/302 (2020.08); C09J 2301/312 (2020.08); C09J 2433/00 (2013.01); C09J 2467/006 (2013.01);
Abstract

An adhesive composition which contains a vinyl polymer and an acrylic adhesive polymer, and wherein: the vinyl polymer has a glass transition temperature (Tg) of from 60° C. to 200° C. (inclusive) and a number-average molecular weight of from 500 to 10,000; and the vinyl polymer is contained in an amount of from 0.5 part by mass to 60 parts by mass per 100 parts by mass of the acrylic adhesive polymer. If this adhesive composition is applied to a separator and then dried, thereby obtaining an adhesive layer, a first Tg that is the glass transition temperature of the entire adhesive layer is from −80° C. to 10° C., and a second Tg that is the glass transition temperature calculated from a surface layer portion of the adhesive layer as determined by X-ray photoelectron spectroscopy is 40° C. or higher, and is higher than the first Tg by 30° C. or more.

Find Patent Forward Citations

Takeya, Nobuyuki. (2022). Pressure-sensitive adhesive composition and use therefor (U.S. Patent No. 11421134). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11421134

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

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