ADHESIVE LAYER FOR POLARIZING PLATES AND ADHESIVE COMPOSITION

Title:

ADHESIVE LAYER FOR POLARIZING PLATES AND ADHESIVE COMPOSITION

Document Type and Number:

WIPO Patent Application WO/2017/029959

Kind Code:

A1

Abstract:

[Problem] To provide an adhesive layer which is applicable to a configuration wherein at least one of polarizer protective films conventionally formed on both surfaces of a polarizer is omitted, and which has excellent light leakage prevention properties and durability. [Solution] An adhesive layer for polarizing plates, which is characterized by being formed from an adhesive composition that contains: a (meth)acrylic copolymer which has a photoelastic coefficient of from -200 × 10-12 to +200 × 10-12 (m2/N) and comprises a constituent unit derived from an alkyl (meth)acrylate ester having a photoelastic coefficient of a homopolymer of from -1,000 × 10-12 to -100 × 10-12 (m2/N) and a constituent unit derived from an aromatic ring-containing (meth)acrylate ester having a photoelastic coefficient of a homopolymer of from +500 × 10-12 to +2,000 × 10-12 (m2/N); and an isocyanate crosslinking agent having no aromatic ring. This adhesive layer for polarizing plates is also characterized by having a photoelastic coefficient of from -200 × 10-12 to +200 × 10-12 (m2/N) and being arranged directly on a polarizer.

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Inventors:

MISUMI TADASHI (JP)
MUROI SACHI (JP)
OKUBO TAKAHIRO (JP)
KONDO KEIKO (JP)
KUROSAWA SHO (JP)
TANAKA RYUSUKE (JP)
KONNO YUTA (JP)

Application Number:

PCT/JP2016/072147

Publication Date:

February 23, 2017

Filing Date:

July 28, 2016

Export Citation:

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Assignee:

SOKEN KAGAKU KK (JP)

International Classes:

G02B5/30; C09J7/10; C09J11/06; C09J133/06

Domestic Patent References:

WO2010098182A1

2010-09-02

Foreign References:

JP2006259664A	2006-09-28
JP2008181105A	2008-08-07
JP2009191149A	2009-08-27

Attorney, Agent or Firm:

SSINPAT PATENT FIRM (JP)

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