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Title:
PRESSURE-SENSITIVE ADHESIVE COMPOSITION AND PRESSURE-SENSITIVE ADHESIVE SHEET
Document Type and Number:
WIPO Patent Application WO/2021/111956
Kind Code:
A1
Abstract:
This pressure-sensitive adhesive composition comprises a hydroxylated urethane prepolymer (A), which is a product of reaction between one or more polyols (a) and a polyisocyanate (b), and an isocyanate hardener (B), wherein the polyols (a) include a biomass-derived polyol (a-1) having an aliphatic dimer structure, the content of the polyol (a-1) being 45-100 mass% with respect to the amount of the polyols (a), which is taken as 100 mass%, and the hydroxylated urethane prepolymer (A) has a molecular-weight dispersity ratio of 4-10.

Inventors:
MIYAZAWA GO (JP)
TONE YOSHITAKA (JP)
Application Number:
PCT/JP2020/043900
Publication Date:
June 10, 2021
Filing Date:
November 25, 2020
Export Citation:
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Assignee:
TOYO INK SC HOLDINGS CO LTD (JP)
TOYOCHEM CO LTD (JP)
International Classes:
C09J175/04; C08G18/10; C08G18/73; C08G18/74; C09J7/38
Foreign References:
JP2016176068A2016-10-06
JP2002053828A2002-02-19
JP2019131820A2019-08-08
JP2013155282A2013-08-15
JP2014196471A2014-10-16
JP2019001984A2019-01-10
Attorney, Agent or Firm:
IEIRI Takeshi (JP)
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