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1. WO2020184587 - POLYVINYL ALCOHOL FILM, POLARIZING FILM, AND POLARIZING PLATE

Publication Number WO/2020/184587
Publication Date 17.09.2020
International Application No. PCT/JP2020/010392
International Filing Date 10.03.2020
IPC
G02B 5/30 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5Optical elements other than lenses
30Polarising elements
C08K 5/29 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
KUSE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
5Use of organic ingredients
16Nitrogen-containing compounds
29Compounds containing carbon-to-nitrogen double bonds
C08L 29/04 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
29Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
02Homopolymers or copolymers of unsaturated alcohols
04Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
C08L 79/04 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
79Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08L61/-C08L77/259
04Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
CPC
C08K 5/29
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
KUse of inorganic or non-macromolecular organic substances as compounding ingredients
5Use of organic ingredients
16Nitrogen-containing compounds
29Compounds containing ; one or more; carbon-to-nitrogen double bonds
C08L 29/04
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
29Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
02Homopolymers or copolymers of unsaturated alcohols
04Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
C08L 79/04
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
79Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
04Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
G02B 5/30
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5Optical elements other than lenses
30Polarising elements
Applicants
  • 株式会社クラレ KURARAY CO., LTD. [JP]/[JP]
Inventors
  • 川崎 絵美 KAWASAKI Emi
  • 磯崎 孝徳 ISOZAKI Takanori
Agents
  • 天野 一規 AMANO Kazunori
Priority Data
2019-04734414.03.2019JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) POLYVINYL ALCOHOL FILM, POLARIZING FILM, AND POLARIZING PLATE
(FR) FILM D'ALCOOL POLYVINYLIQUE, FILM POLARISANT ET PLAQUE POLARISANTE
(JA) ポリビニルアルコールフィルム、偏光フィルム、及び偏光板
Abstract
(EN)
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
(FR)
L'invention concerne un film d'alcool polyvinylique avec lequel il est possible de produire un film polarisant pouvant supprimer de manière suffisante des réductions de transmittance de lumière d'une plaque polarisante dans des tests de durabilité à haute température ; un film polarisant obtenu en utilisant un tel film d'alcool polyvinylique ; et une plaque polarisante obtenue en utilisant ledit film polarisant. Le film d'alcool polyvinylique contient de l'alcool polyvinylique et a une absorbance A1 à une longueur d'onde de 210 nm et une épaisseur moyenne D1 (mm) qui satisfont à l'équation (1) ci-dessous. Le film polarisant est formé à partir du film d'alcool polyvinylique susmentionné. La plaque de polarisation comprend le film polarisant susmentionné et un film protecteur contenant une résine d'ester de cellulose. (1) : A1/D1 ≥ 9
(JA)
高温耐久試験において偏光板の光透過率の低下を十分に抑制できる偏光フィルムを製造することができるポリビニルアルコールフィルム、このようなポリビニルアルコールフィルムを用いて得られる偏光フィルム、及びこの偏光フィルムを用いて得られる偏光板を提供すること。ポリビニルアルコールを含み、波長210nmにおける吸光度A1と平均厚みD1(mm)とが下記式(1)を満たすポリビニルアルコールフィルム。上記ポリビニルアルコールフィルムから形成された偏光フィルム。上記偏光フィルムと、セルロースエステル系樹脂を含む保護フィルムとを有する偏光板。 A1/D1≧9 ・・・(1)
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