ADHESIVE AGENT COMPOSITION, ADHESIVE AGENT, ADHESIVE SHEET, AND SURFACE PROTECTION FILM

WIPO Patent Application WO/2023/074468

A1

Provided is an adhesive agent composition able to form an adhesive agent which is lightly releasable at a low peeling speed and can suppress an increase in peeling force at a high peeling speed. Also provided is an adhesive sheet which is lightly releasable at a low peeling speed and can suppress an increase in peeling force at a high peeling speed. Provided is an adhesive agent composition that contains an acrylic polymer and an epoxy-based crosslinking agent. The acrylic polymer is a polymer of a monomer component containing an alkyl (meth)acrylate having a linear alkyl group with 5-18 carbon atoms at an ester terminal. In addition, an adhesive sheet having an adhesive agent layer having a gel fraction of 70% or more is provided in another embodiment. The adhesive agent layer is formed from an adhesive agent composition containing an acrylic polymer and a crosslinking agent. The acrylic polymer is a polymer of a monomer component containing an alkyl (meth)acrylate having a linear alkyl group with 5-18 carbon atoms at an ester terminal.

MORISHITA HIROMITSU (JP)
SHIBANO MASAYA (JP)
YAMAGATA MASATO (JP)

PCT/JP2022/038756

May 04, 2023

October 18, 2022

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NITTO DENKO CORP (JP)

C09J11/06; C09J7/38; C09J133/06

WO2021125278A1

2021-06-24

JP2001123139A	2001-05-08
JP2005146151A	2005-06-09
JPH11256111A	1999-09-21
JPS63225677A	1988-09-20
JP2011511853A	2011-04-14
JP2020164844A	2020-10-08

OI, Michiko (JP)

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