Title:
MOISTURE-CURABLE POLYURETHANE HOT-MELT RESIN COMPOSITION, PRESSURE-SENSITIVE ADHESIVE, LAMINATE, AND METHOD FOR PRODUCING LAMINATE
Document Type and Number:
WIPO Patent Application WO/2023/157384
Kind Code:
A1
Abstract:
The present invention provides a moisture-curable polyurethane hot-melt resin composition comprising a urethane prepolymer (i) having an isocyanate group, which is a product of reaction between a polyol (A) and a polyisocyanate (B), and a tackifier (ii), characterized in that the polyisocyanate (B) is a polyisocyanate prepolymer which is a product of reaction between one or more compounds (b1) having a number-average molecular weight less than 500, having a branched structure, and having two to four hydroxyl groups in the molecule and a diisocyanate (b2). The invention further provides a pressure-sensitive adhesive characterized by including the moisture-curable polyurethane hot-melt resin composition.
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Inventors:
NAKAMURA AKIFUMI (JP)
FUJIWARA TOYOKUNI (JP)
NISHIUMI KENGO (JP)
FUJIWARA TOYOKUNI (JP)
NISHIUMI KENGO (JP)
Application Number:
PCT/JP2022/040069
Publication Date:
August 24, 2023
Filing Date:
October 27, 2022
Export Citation:
Assignee:
DAINIPPON INK & CHEMICALS (JP)
International Classes:
C08G18/30; B32B27/40; C08G18/10; C08G18/42; C08G18/73; C09J11/08; C09J175/04; C09J175/06
Domestic Patent References:
| WO2019163621A1 | 2019-08-29 | |||
| WO2021054128A1 | 2021-03-25 |
Foreign References:
| JP2004155860A | 2004-06-03 | |||
| JP2009280735A | 2009-12-03 | |||
| JP2021075657A | 2021-05-20 | |||
| JP2021024998A | 2021-02-22 |
Attorney, Agent or Firm:
ONO Takayuki (JP)
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