Title:
PRESSURE-SENSITIVE ADHESIVE COMPOSITION FOR OPTICAL FILM
Document Type and Number:
WIPO Patent Application WO/2010/064551
Kind Code:
A1
Abstract:
A pressure-sensitive adhesive composition for optical film, which comprises an acrylic triblock copolymer (I) and an isocyanate compound. The triblock copolymer (1) is represented by the formula: A1-B-A2, wherein alkyl methacrylate polymer blocks (A1) and (A2) having a Tg of 100°C or higher are bonded to an alkyl acrylate polymer block (B) having a Tg of -20°C or lower. Further, the triblock copolymer (1) has a content of the block (B) of 40 to 95mass%, an Mw of 50,000 to 300,000, and a molecular weight distribution of 1.0 to 1.5, and is free from NCO-reactive functional groups. In the pressure-sensitive adhesive composition, the content of the triblock copolymer (1) is 60mass% or higher, and the content of the isocyanate compound is 0.0015mass% or higher and below 0.35mass% in terms of NCO content, each percentage being relative to the mass of the solid matter contained in the composition.
Inventors:
OSHITA SHINYA (JP)
MORISHITA YOSHIHIRO (JP)
TAMURA SAORI (JP)
MORISHITA YOSHIHIRO (JP)
TAMURA SAORI (JP)
Application Number:
PCT/JP2009/069761
Publication Date:
June 10, 2010
Filing Date:
November 24, 2009
Export Citation:
Assignee:
KURARAY CO (JP)
OSHITA SHINYA (JP)
MORISHITA YOSHIHIRO (JP)
TAMURA SAORI (JP)
OSHITA SHINYA (JP)
MORISHITA YOSHIHIRO (JP)
TAMURA SAORI (JP)
International Classes:
C09J153/00; C09J7/02; C09J11/06; C09J133/08; G02B5/30; G02F1/1335
Domestic Patent References:
| WO2008065982A1 | 2008-06-05 | |||
| WO2008065982A1 | 2008-06-05 |
Foreign References:
| JP2005307063A | 2005-11-04 | |||
| JPH07133471A | 1995-05-23 | |||
| JP2004058289A | 2004-02-26 | |||
| JPH10298248A | 1998-11-10 | |||
| JPH0782542A | 1995-03-28 | |||
| JP2003329837A | 2003-11-19 | |||
| JP2004058289A | 2004-02-26 | |||
| JPH11302617A | 1999-11-02 | |||
| JPH11323072A | 1999-11-26 | |||
| JPH0651121A | 1994-02-25 | |||
| JP2001318230A | 2001-11-16 | |||
| JP2006104434A | 2006-04-20 | |||
| JP2006011365A | 2006-01-12 | |||
| JPH0693060A | 1994-04-05 | |||
| JPH0725859A | 1995-01-27 | |||
| JPH11335432A | 1999-12-07 |
Other References:
MACROMOL. CHEM. PHYS., vol. 201, 2000, pages 1108 - 1114
See also references of EP 2366750A4
See also references of EP 2366750A4
Attorney, Agent or Firm:
TSUJI YOSHIKO (JP)
Crossing Yoshiko (JP)
Crossing Yoshiko (JP)
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