Title:
ADHESIVE SHEET AND ADHESIVE AGENT COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2021/019868
Kind Code:
A1
Abstract:
An adhesive sheet having a sheet-form base material and an adhesive agent layer formed on one surface of the base material, the adhesive sheet being such that: the adhesive agent layer comprises a cured product of an adhesive agent composition; the gel fraction is 50-65 mass%; the adhesive agent composition includes a polyurethane (A), a (meth)acrylic monomer (B) that comprises a compound having a (meth)acryloyloxy group, a chain transfer agent (C), and a photopolymerization initiator (D); and the polyurethane (A) has a skeleton that includes a structure derived from a polyoxyalkylene polyol and a structure derived from a polyisocyanate, and includes a polyurethane (a1) having (meth)acryloyl groups at two or more ends.
Inventors:
IKEYA TATSUHIRO (JP)
NAKANISHI KENICHI (JP)
NAKANISHI KENICHI (JP)
Application Number:
PCT/JP2020/019734
Publication Date:
February 04, 2021
Filing Date:
May 19, 2020
Export Citation:
Assignee:
SHOWA DENKO KK (JP)
International Classes:
C09J4/02; C09J7/38; C09J11/06; C09J175/08; C09J175/16
Domestic Patent References:
| WO2012077726A1 | 2012-06-14 | |||
| WO2015079728A1 | 2015-06-04 |
Foreign References:
| JP2018076456A | 2018-05-17 | |||
| JP2016023261A | 2016-02-08 | |||
| JP2011511851A | 2011-04-14 | |||
| JP2017538812A | 2017-12-28 | |||
| JP2019131681A | 2019-08-08 |
Attorney, Agent or Firm:
OIKAWA Shu et al. (JP)
Download PDF: