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Patent Searching and Data


Title:
POLARIZING FILM, POLARIZING PLATE, AND METHOD FOR PRODUCING SAID POLARIZING FILM
Document Type and Number:
WIPO Patent Application WO/2020/261778
Kind Code:
A1
Abstract:
The present invention provides a polarizing film that exhibits excellent durability in a high temperature, high humidity environment. A polarizing film according to the present invention is formed of a polyvinyl alcohol resin film containing iodine; and the absorbance Abs240 thereof at the wavelength of 470 nm after an endurance test for 240 hours at the temperature of 60°C at the relative humidity of 95% satisfies the relational expression described below with respect to the absorbance Abs0 thereof before the endurance test. Abs240/Abs0 > 0.90 A polarizing film according to one embodiment of the present invention has a single transmittance of 43.0% or more.

Inventors:
SHIMAZU RYO (JP)
GOTO SHUSAKU (JP)
MORISAKI MAYUMI (JP)
Application Number:
PCT/JP2020/018841
Publication Date:
December 30, 2020
Filing Date:
May 11, 2020
Export Citation:
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Assignee:
NITTO DENKO CORP (JP)
International Classes:
G02B5/30; B29C55/06
Domestic Patent References:
WO2019054268A12019-03-21
Foreign References:
JP2008070571A2008-03-27
Attorney, Agent or Firm:
MOMII Takafumi (JP)
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