Title:
PRESSURE-SENSITIVE ADHESIVE COMPOSITION AND PROTECTIVE SHEET
Document Type and Number:
WIPO Patent Application WO/2023/276944
Kind Code:
A1
Abstract:
Provided is a pressure-sensitive adhesive composition which can give cured objects inhibited from changing in gel content even under high-temperature high-humidity conditions. This pressure-sensitive adhesive composition comprises a urethane polymer (A) containing an ethylenically unsaturated group, a monomer (B) containing an ethylenically unsaturated group, and a photopolymerization initiator (C). The urethane polymer (A) containing an ethylenically unsaturated group is a product of reaction among a polyoxyalkylene polyol (a1), polyisocyanates (a2), and either an ethylenically unsaturated hydroxylated compound (a3-1) or an ethylenically unsaturated compound (a3-2) containing an isocyanato group. The polyisocyanates (a2) comprise a polyisocyanate (a2-1) containing an ethylenically unsaturated group and a polyisocyanate (a2-2) containing no ethylenically unsaturated group.
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Inventors:
IMAI YUYA (JP)
SASAKI KAZUHIRO (JP)
IKEYA TATSUHIRO (JP)
NAKANISHI KENICHI (JP)
SASAKI KAZUHIRO (JP)
IKEYA TATSUHIRO (JP)
NAKANISHI KENICHI (JP)
Application Number:
PCT/JP2022/025552
Publication Date:
January 05, 2023
Filing Date:
June 27, 2022
Export Citation:
Assignee:
SHOWA DENKO KK (JP)
International Classes:
C08F290/06; C08F290/14; C08G18/67; C08G18/81; C09J4/00; C09J4/02; C09J7/38; C09J11/06; C09J175/08; C09J175/14
Domestic Patent References:
| WO2019069746A1 | 2019-04-11 |
Foreign References:
| JP2018095770A | 2018-06-21 | |||
| JP2016020477A | 2016-02-04 | |||
| JP2017206654A | 2017-11-24 | |||
| JP2017193609A | 2017-10-26 | |||
| JP2018076456A | 2018-05-17 | |||
| JP2003183615A | 2003-07-03 |
Attorney, Agent or Firm:
OIKAWA Shu et al. (JP)
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