ADHESIVE, LAYERED BODY, METHOD FOR MANUFACTURING LAYERED BODY, AND PACKAGING MATERIAL

Title:

ADHESIVE, LAYERED BODY, METHOD FOR MANUFACTURING LAYERED BODY, AND PACKAGING MATERIAL

Document Type and Number:

WIPO Patent Application WO/2023/032979

Kind Code:

A1

Abstract:

Provided is a solventless two-part curing-type adhesive which has excellent initial cohesive power and for which a decrease in the cohesive power over time is prevented.　The two-part curing-type adhesive contains: an isocyanate composition (X) containing a polyisocyanate compound (A); and a polyol composition (Y) containing a polyester polyol (B), a compound (C) containing a polyoxyalkylene chain and a hydroxyl group, and a polyamine (D). The polyester polyol (B) is at least one selected from the group consisting of a polyester polyol (B1) and a polycaprolactone polyol (B2), both being the reaction composition of a polycarboxylic acid and a polyalcohol, where 90 mass% or more of the polyalcohol is an aliphatic diol with an alkyl chain of 4 to 10 carbon atoms, joining between two hydroxyl groups. The total proportion of the polyester polyol (B), the compound (C), and the polyamine (D) in the solid content of the polyol composition (Y) is 90 mass% or more.

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Inventors:

HONMA TAKAO (JP)
TOMITA DAIKI (JP)
AKITA KOUJI (JP)
ARAI MASAMITSU (JP)

Application Number:

PCT/JP2022/032579

Publication Date:

March 09, 2023

Filing Date:

August 30, 2022

Export Citation:

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Assignee:

DAINIPPON INK & CHEMICALS (JP)

International Classes:

B32B27/40; B32B7/12; B65D65/40; C09J11/06; C09J175/04; C09J175/06; C09J175/08

Domestic Patent References:

WO2019181921A1	2019-09-26
WO2019167638A1	2019-09-06
WO2018101242A1	2018-06-07

Foreign References:

JP2019533034A	2019-11-14
JP2020045442A	2020-03-26
JP2019031603A	2019-02-28
JP2003129024A	2003-05-08
JP2014159548A	2014-09-04

Attorney, Agent or Firm:

ONO Takayuki (JP)

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