Title:
HIGHLY DURABLE DYE-BASED POLARIZING PLATE CONTAINING NEAR-INFRARED ABSORBING DYE
Document Type and Number:
WIPO Patent Application WO/2021/002440
Kind Code:
A1
Abstract:
A polarizing plate which comprises a hydrophilic polymer film containing a near-infrared absorbing dye and a substrate that is provided on one surface or both surfaces of the film, wherein the substrate has at least one of the characteristics (a) and (b) described below. (a) If the hydrophilic polymer film contains a boron compound, the mass of the boron compound (in terms of boric acid) contained in the hydrophilic polymer film after exposing the polarizing plate to an environment at a relative humidity of 90%RH at 80°C for 1,000 hours is maintained at 20 or more if the mass thereof before exposure is taken as 100.
(b) The moisture permeability of the substrate in an environment at a relative humidity of 90%RH at 40°C as determined by a water vapor permeability test in accordance with JIS Z 0208 is from 0 to 1,500 g/m2 in 24 hours.
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Inventors:
MOCHIZUKI NORIAKI (JP)
MORITA RYOUTAROU (JP)
HATTORI YU (JP)
MORITA RYOUTAROU (JP)
HATTORI YU (JP)
Application Number:
PCT/JP2020/026065
Publication Date:
January 07, 2021
Filing Date:
July 02, 2020
Export Citation:
Assignee:
NIPPON KAYAKU KK (JP)
International Classes:
G02B5/30; B32B7/023; B32B7/027; B32B9/00; B32B17/10; B32B27/16; B32B27/18; B32B27/30; G02F1/1335
Domestic Patent References:
| WO2018088558A1 | 2018-05-17 | |||
| WO2016171126A1 | 2016-10-27 |
Attorney, Agent or Firm:
ASAMURA PATENT OFFICE, P.C. (JP)
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