Title:
ADHESIVE SHEET
Document Type and Number:
WIPO Patent Application WO/2023/234208
Kind Code:
A1
Abstract:
Provided is an adhesive sheet which can exhibit sufficient adhesion to a rough polar surface and to a non-polar surface. Provided is an adhesive sheet having an adhesive layer. The adhesive layer contains a styrene-based block copolymer and a tackifying resin. The content of styrene in the styrene-based block copolymer is 10-22 mass%. Furthermore, the surface of the adhesive layer has a hardness of less than 0.15 MPa in a load removal test by means of nano indentation at a temperature of 23ºC and an indentation depth of 1 µm. In addition, the residual organic solvent amount in the adhesive layer is less than 1000 ppm.
Inventors:
NAKAGAWA MUNESHIGE (JP)
KOHASHI TATSUYA (JP)
TAMURA AKINORI (JP)
YAMAGUCHI TOMOO (JP)
HATANAKA ITSUHIRO (JP)
KOHASHI TATSUYA (JP)
TAMURA AKINORI (JP)
YAMAGUCHI TOMOO (JP)
HATANAKA ITSUHIRO (JP)
Application Number:
PCT/JP2023/019712
Publication Date:
December 07, 2023
Filing Date:
May 26, 2023
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
C09J11/08; C09J7/38; C09J125/08; C09J153/02
Foreign References:
| JP2017190428A | 2017-10-19 | |||
| JP2014076960A | 2014-05-01 | |||
| JP2021161257A | 2021-10-11 | |||
| JP2014114331A | 2014-06-26 | |||
| JP2012131978A | 2012-07-12 | |||
| JP2005074354A | 2005-03-24 |
Attorney, Agent or Firm:
OI, Michiko (JP)
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