Title:
POLARIZING SHEET
Document Type and Number:
WIPO Patent Application WO/2023/112533
Kind Code:
A1
Abstract:
[Problem] To provide a polarizing film obtained by swelling a poly(vinyl alcohol) resin film and uniaxially stretching the swollen film, the polarizing film combining wet heat resistance with heat resistance. [Solution] A polarizing laminate comprising a polarizing film, which is a uniaxially stretched poly(vinyl alcohol) resin film, and transparent plastic sheets disposed on both surfaces of the polarizing film with an adhesive layer interposed therebetween. In the polarizing laminate, ΔEcmc values under the conditions of 55°C, 90%, and 24h and under the conditions of 120°C and 24h are 3.0 or less each, the values being calculated with CIEDE2000 color-difference formula according to ISO/CIE 11664-6:2014.
Inventors:
MATSUNO YUYA (JP)
AKAKI MASAYUKI (JP)
KAKINUMA YUKA (JP)
KIMURA HIDEAKI (JP)
AKAKI MASAYUKI (JP)
KAKINUMA YUKA (JP)
KIMURA HIDEAKI (JP)
Application Number:
PCT/JP2022/040832
Publication Date:
June 22, 2023
Filing Date:
October 31, 2022
Export Citation:
Assignee:
MITSUBISHI GAS CHEMICAL CO (JP)
MGC FILSHEET CO LTD (JP)
MGC FILSHEET CO LTD (JP)
International Classes:
G02B5/30; G02C7/12
Domestic Patent References:
| WO2019116760A1 | 2019-06-20 | |||
| WO2014115705A1 | 2014-07-31 | |||
| WO2016117659A1 | 2016-07-28 | |||
| WO2020100889A1 | 2020-05-22 | |||
| WO2020070962A1 | 2020-04-09 | |||
| WO2016171127A1 | 2016-10-27 |
Attorney, Agent or Firm:
OKUTANI Masako (JP)
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