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. 25, 2025
Filed:
May. 17, 2021
Applicant:
Denka Company Limited, Tokyo, JP;
Inventors:
Tometomo Uchida, Tokyo, JP;
Toru Arai, Tokyo, JP;
Takashi Domoto, Tokyo, JP;
Takako Tanigawa, Tokyo, JP;
Jun Watanabe, Tokyo, JP;
Megumi Sudo, Tokyo, JP;
Jun Yoshida, Tokyo, JP;
Assignee:
DENKA COMPANY LIMITED, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09J 123/22 (2006.01); C08F 2/44 (2006.01); C08F 2/48 (2006.01); C08F 20/20 (2006.01); C08K 5/00 (2006.01); C08K 5/101 (2006.01); C09J 11/06 (2006.01); H01L 21/02 (2006.01);
U.S. Cl.
CPC ...
C09J 123/22 (2013.01); C08F 2/44 (2013.01); C08F 2/48 (2013.01); C08F 20/20 (2013.01); C08K 5/0025 (2013.01); C08K 5/101 (2013.01); C09J 11/06 (2013.01); H01L 21/02304 (2013.01); H01L 21/0231 (2013.01);
Abstract
A composition for temporary bonding, includes: (A) a (meth)acrylate having the following (A-1) and (A-2): (A-1) a monofunctional (meth)acrylate whose side chain is an alkyl group having 18 or more carbon atoms and homopolymer has a Tg of −100° C. to 60° C., and (A-2) a polyfunctional (meth)acrylate; (B) a polyisobutene homopolymer and/or a polyisobutene copolymer; and (C) a photo radical polymerization initiator.