公开(公告)号：US10703941B2

公开(公告)日：2020-07-07

申请号：US14768399

申请日：2014-09-26

Applicant: LINTEC CORPORATION

Inventor： Haruya Yamada ,  Kiichiro Kato

IPC: C09J133/08 ,  C09J9/00 ,  C08F220/18 ,  C08L71/02 ,  C09J133/14 ,  C08L63/00 ,  C09J7/20 ,  B32B7/06 ,  B32B7/12 ,  C09J5/00

Abstract: An electrically peelable pressure sensitive adhesive sheet has a pressure sensitive adhesive layer formed of an electrically peelable pressure sensitive adhesive composition comprising an acrylic copolymer (A) comprising 1 to 99 mass % of a constituent unit (a1) derived from a compound represented by the following general formula (a1), and a surfactant (B). The electrically peelable pressure sensitive adhesive sheet has high adhesion before voltage application, but the adhesion can be effectively decreased by voltage application for a short time. wherein R1 represents a hydrogen atom or a methyl group, R2 represents an alkylene group having 1 to 5 carbon atoms that is unsubstituted or has a substituent, and R3 represents an alkyl group having 1 to 8 carbon atoms that is unsubstituted or has a substituent; and a value of n is an integer of 1 or more.

公开(公告)号：US10604684B2

公开(公告)日：2020-03-31

申请号：US14768369

申请日：2014-03-26

Applicant: LINTEC CORPORATION

Inventor： Haruya Yamada ,  Kiichiro Kato ,  Tomio Hatanaka ,  Takashi Sugino ,  Satoshi Kawada

IPC: C09J133/08 ,  C09J5/00 ,  C09J171/02 ,  C08K5/42 ,  C09J9/00 ,  B32B27/30 ,  C08F220/18 ,  C09J7/38 ,  C08L71/03 ,  C08L33/08 ,  B32B7/06 ,  B32B7/12 ,  C09J11/08 ,  C08K5/17

Abstract: An electrically peelable pressure sensitive adhesive composition, which contains an acrylic polymer (A), a (poly)alkylene polyol (B) having a number average molecular weight of no greater than 2000, and an ammonium salt (C), has a high adhesiveness before voltage application, but the adhesiveness can decrease effectively by voltage application for a short time.