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Title:
POLARIZING PLATE
Document Type and Number:
WIPO Patent Application WO/2022/145369
Kind Code:
A1
Abstract:
[Problem] To provide a polarizing plate in which protective films are affixed to both surfaces of a polarizing film, the polarizing plate exhibiting a small degree of curling or not being prone to curling even when placed in a high-humidity environment. [Solution] Provided is a polarizing plate including a first protective film, a first adhesive layer, a polarizing film, a second adhesive layer, and a second protective film in the stated order, the first adhesive layer being a cured product layer of a first cationically polymerizable adhesive including one or more types of cationic polymerization initiators, the second adhesive layer being a cured product layer of a second cationically polymerizable adhesive including one or more types of cationic polymerization initiators, the one or more cationic polymerization initiators included in the first cationically polymerizable adhesive including a first cationic polymerization initiator, the first cationic polymerization initiator being a borate salt comprising an anion component represented by formula (i), and the molecular weight of the first cationic polymerization initiator being greater than the molecular weight of the one or more types of cationic polymerization initiators included in the second cationically polymerizable adhesive.

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Inventors:
IWATA TOMO (TW)
SAKAUE CHIE (JP)
Application Number:
PCT/JP2021/048234
Publication Date:
July 07, 2022
Filing Date:
December 24, 2021
Export Citation:
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Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
G02B5/30; C09J7/22; C09J7/30; C09J7/38; C09J11/06; C09J201/00
Foreign References:
JP2016126345A2016-07-11
JP2016126346A2016-07-11
JP2008122790A2008-05-29
JP2008203400A2008-09-04
JP2005309394A2005-11-04
JP2017009736A2017-01-12
JP2016080830A2016-05-16
JP2014206702A2014-10-30
JP2018041079A2018-03-15
Attorney, Agent or Firm:
NAKAYAMA, Tohru et al. (JP)
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