Title:
POLYVINYL ALCOHOL FILM, POLARIZING FILM, AND POLARIZING PLATE
Document Type and Number:
WIPO Patent Application WO/2020/184587
Kind Code:
A1
Abstract:
Provided are: a polyvinyl alcohol film with which can produce a polarizing film that can sufficiently suppress reductions in light transmittance of a polarizing plate in high temperature durability tests; a polarizing film obtained by using such a polyvinyl alcohol film; and a polarizing plate obtained by using said polarizing film. The polyvinyl alcohol film contains polyvinyl alcohol, and has an absorbance A1 at a wavelength of 210 nm and an average thickness D1 (mm) that satisfy equation (1) below. The polarizing film is formed from the abovementioned polyvinyl alcohol film. The polarizing plate comprises the abovementioned polarizing film and a protective film containing a cellulose ester resin. (1): A1/D1≥9
Inventors:
KAWASAKI EMI (JP)
ISOZAKI TAKANORI (JP)
ISOZAKI TAKANORI (JP)
Application Number:
PCT/JP2020/010392
Publication Date:
September 17, 2020
Filing Date:
March 10, 2020
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
G02B5/30; C08K5/29; C08L29/04; C08L79/04
Domestic Patent References:
| WO2017065259A1 | 2017-04-20 | |||
| WO2011108350A1 | 2011-09-09 |
Foreign References:
| JP2014102353A | 2014-06-05 |
Attorney, Agent or Firm:
AMANO Kazunori (JP)
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