Title:
ADHESIVE COMPOSITION FOR POLARIZING PLATE, ADHESIVE SHEET AND POLARIZING PLATE WITH ADHESIVE LAYER
Document Type and Number:
WIPO Patent Application WO/2015/141381
Kind Code:
A1
Abstract:
[Problem] To provide a polarizing plate adhesive composition which can suppress warping (bending) of liquid crystal cells and which can form an adhesive layer with excellent durability. [Solution] This adhesive composition for a polarizing plate contains (A) a (meth)acrylic copolymer obtained by copolymerizing a (meth)acrylate alkyl ester with 4-18 carbons in an alkyl group and a monomer component containing a polar group-containing monomer, and (B) a cross-linking agent, and is characterized in that the loss tangent (tanδ1) at 23°C of an adhesive layer formed from the aforementioned composition is 0.33-0.55, and the loss tangent (tanδ2) at 80°C is 0.40-0.65.
Inventors:
MUROI SACHI (JP)
KONNO YUTA (JP)
KONNO YUTA (JP)
Application Number:
PCT/JP2015/054776
Publication Date:
September 24, 2015
Filing Date:
February 20, 2015
Export Citation:
Assignee:
SOKEN KAGAKU KK (JP)
International Classes:
G02B5/30; C09J7/02; C09J11/06; C09J133/08; C09J133/10; C09J175/04; G02F1/1335
Domestic Patent References:
| WO2007029298A1 | 2007-03-15 |
Foreign References:
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Attorney, Agent or Firm:
SSINPAT PATENT FIRM (JP)
Patent business corporation SSINPAT (JP)
Patent business corporation SSINPAT (JP)
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