Title:
POLARIZING FILM, POLARIZING PLATE, AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2018/164196
Kind Code:
A1
Abstract:
Provided is a polarizing film that is formed of a PVA film which contains an iodine-based dichroic pigment and which is crosslinked by a boron compound, wherein the polarizing film has a polarization degree of 99.5% or greater, a single b value of 3.0 or less, and satisfies formula (1) and formula (2). Such a polarizing film has excellent polarization performance and hue, and has a small contraction rate and excellent dimensional stability.
Formulae: (1): A ≤ 0.9; (2): B/A ≥ 55
A is the contraction rate (%) of the polarizing film which has been heated at 80oC for 4 hours, and B is the contraction stress (N/mm2) of the polarizing film which has been heated at 80oC for 4 hours.
Inventors:
OZONO TATSUYA (JP)
TSUJI YOSHIHISA (JP)
TSUJI YOSHIHISA (JP)
Application Number:
PCT/JP2018/008826
Publication Date:
September 13, 2018
Filing Date:
March 07, 2018
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
G02B5/30; B29C55/06; B32B27/30; G02F1/1335; B29K29/00; B29L7/00; B29L11/00
Domestic Patent References:
| WO2015115359A1 | 2015-08-06 | |||
| WO2014050697A1 | 2014-04-03 | |||
| WO2012070424A1 | 2012-05-31 |
Foreign References:
| JP2003185845A | 2003-07-03 | |||
| JP2009109860A | 2009-05-21 |
Attorney, Agent or Firm:
SETOUCHI INTERNATIONAL PATENT FIRM (JP)
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