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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 12421339 B1

PDFFull Text
Date of Patent:
Sep. 23, 2025

Filed:

Jul. 22, 2021

(meth)acrylic copolymer, pressure-sensitive adhesive composition, pressure-sensitive adhesive, and pressure-sensitive adhesive sheet

Applicant:

Mitsubishi Chemical Corporation, Tokyo, JP;

Inventors:

Kanami Fujita, Tokyo, JP;

Junichi Nakamura, Tokyo, JP;

Hiroko Shinada, Tokyo, JP;

Assignee:

Mitsubishi Chemical Corporation, Tokyo, JP;

Attorney:

Morgan, Lewis & Bockius LLP

Primary Examiner:

Eli D Strah

Int. Cl.
CPC ...
C08F 265/06 (2006.01); C08F 2/38 (2006.01); C08F 2/48 (2006.01); C08F 220/06 (2006.01); C08F 220/14 (2006.01); C08F 220/18 (2006.01); C08F 220/30 (2006.01); C09J 7/38 (2018.01); C09J 151/00 (2006.01);
U.S. Cl.
CPC ...
C08F 265/06 (2013.01); C08F 2/38 (2013.01); C08F 2/48 (2013.01); C08F 220/06 (2013.01); C08F 220/14 (2013.01); C08F 220/1804 (2020.02); C08F 220/1811 (2020.02); C08F 220/301 (2020.02); C08F 220/306 (2020.02); C09J 7/385 (2018.01); C09J 151/003 (2013.01); C09J 2301/302 (2020.08); C09J 2301/416 (2020.08); C09J 2451/00 (2013.01);
Abstract

There is provided a (meth)acrylic copolymer with which a pressure-sensitive adhesive layer exhibiting excellent low temperature coatability and exhibiting holding power and excellent base material contamination resistance even in a case of being irradiated with a low dose of UV irradiation can be formed. The (meth)acrylic copolymer of the present invention comprises a constituent unit a derived from a macromonomer and a constituent unit b derived from a monomer represented by Formula (b), where a content of the constituent unit b is 0.01% to 25% by mass with respect to a total mass of the (meth)acrylic copolymer. In Formula (b), Rand Reach independently represent an alkyl group, a carboxy group, or a halogen atom, n represents an integer of 0 to 5, m represents an integer of 0 to 4, and X represents a (meth)acryloyloxy group or a (meth)acryloyloxyalkyleneoxy group.

Find Patent Forward Citations

Fujita, Kanami. (2025). (meth)acrylic copolymer, pressure-sensitive adhesive composition, pressure-sensitive adhesive, and pressure-sensitive adhesive sheet (U.S. Patent No. 12421339). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12421339

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

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