LAMINATE OPTICAL MEMBER AND POLARIZING PLATE USING PHOTOCURABLE ADHESIVE

WIPO Patent Application WO/2012/133162

A1

Provided is a polarizing plate configured from a polyvinyl alcohol-based polarizer and a transparent protective film pasted onto the polarizer with an adhesive therebetween, wherein the adhesive contains 100 parts by weight of a photo cation curable component (A) and 1-10 parts by weight of a photo cation polymerization initiator (B), and the photo cation curable component (A) is formed from a photocurable adhesive containing the following (A1)-(A3) at the following quantities relative to the total quantity thereof: 30-85 wt% of an alicyclic diepoxy compound (A1) represented by formula (I); 1-69 wt% of a diglycidyl compound (A2) represented by formula (II), Z being a branch structure; and 1-69 wt% of a monofunctional epoxy compound (A3) represented by formula (III). The weight reduction of the protective film when the protective film is immersed at 23°C for two days in the photocurable adhesive is 0-30 wt%.

KUME ETSUO (JP)
IWATA TOMO (JP)
NAGAYASU SATOSHI (JP)
TAKAHASHI TOSHIYUKI (JP)
HONMA ERI (JP)

PCT/JP2012/057476

October 04, 2012

March 23, 2012

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SUMITOMO CHEMICAL CO (JP)
ADEKA CORP (JP)
KUME ETSUO (JP)
IWATA TOMO (JP)
NAGAYASU SATOSHI (JP)
TAKAHASHI TOSHIYUKI (JP)
HONMA ERI (JP)

G02B5/30; C09J163/00; C09J171/00; G02F1/1335

JP2011028234A	2011-02-10
JP2004155954A	2004-06-03
JPH06207152A	1994-07-26
JP2008273148A	2008-11-13
JP2010209126A	2010-09-24

Fukami Patent Office, p. c. (JP)
Patent business corporation Fukami patent firm (JP)

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