Title:
ADHESIVE COMPOSITION FOR POLARIZATION PLATE AND POLARIZATION PLATE WITH ADHESIVE LAYER
Document Type and Number:
Japanese Patent JP2021092610
Kind Code:
A
Abstract:
To provide an adhesive composition for a polarization plate allowing for formation of an adhesive layer that is less likely to peel off from the polarization plate and foam even when exposed under a high-temperature environment, and a polarization plate with an adhesive layer.SOLUTION: The present invention provides an adhesive composition for a polarization plate, and a polarization plate with an adhesive layer. The adhesive composition for a polarization plate comprises: a (meth)acrylic copolymer (A) that includes a constituent unit derived from a monomer having a hydroxyl group and a constituent unit derived from a (meth)acrylic acid alkyl ester monomer, and has a weight average molecular weight of 1.3 million or more; a polyisocyanate compound (B); an imidazole compound (C); and a tackifier (D) having a hydroxyl group and having a hydroxyl value of 10 mgKOH/g or more, wherein a gel fraction after cross-linking of the adhesive composition for a polarization plate is within the range of 20 mass% or more and less than 45 mass%.SELECTED DRAWING: None
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Inventors:
HIROTA TOMOYA
HASEGAWA RYO
KANO HAJIME
HASEGAWA RYO
KANO HAJIME
Application Number:
JP2019221561A
Publication Date:
June 17, 2021
Filing Date:
December 06, 2019
Export Citation:
Assignee:
NIPPON CARBIDE KOGYO KK
International Classes:
G02B5/30; C08F220/10; C09J11/06; C09J133/06; C09J175/04
Domestic Patent References:
| JP2018095844A | 2018-06-21 | |||
| JP2014058650A | 2014-04-03 | |||
| JP2016003285A | 2016-01-12 | |||
| JP2012007011A | 2012-01-12 | |||
| JP2018065982A | 2018-04-26 | |||
| JP2016183210A | 2016-10-20 |
Foreign References:
| WO2015030080A1 | 2015-03-05 | |||
| WO2010110254A1 | 2010-09-30 | |||
| WO2008111412A1 | 2008-09-18 |
Attorney, Agent or Firm:
Atsushi Nakajima
Kato Kazunori
Hiroshi Fukuda
Kato Kazunori
Hiroshi Fukuda