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1. WO2020230597 - POLARIZING PLATE PROTECTIVE FILM AND METHOD FOR PRODUCING SAME, AND POLARIZING PLATE

Publication Number WO/2020/230597
Publication Date 19.11.2020
International Application No. PCT/JP2020/017876
International Filing Date 27.04.2020
IPC
G02B 5/30 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5Optical elements other than lenses
30Polarising elements
C08G 63/197 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
63Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
02Polyesters derived from hydroxy carboxylic acids or from polycarboxylic acids and polyhydroxy compounds
12derived from polycarboxylic acids and polyhydroxy compounds
16Dicarboxylic acids and dihydroxy compounds
18the acids or hydroxy compounds containing carbocyclic rings
19Hydroxy compounds containing aromatic rings
193containing two or more aromatic rings
197containing condensed aromatic rings
C08G 63/672 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
63Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
66Polyesters containing oxygen in the form of ether groups
668derived from polycarboxylic acids and polyhydroxy compounds
672Dicarboxylic acids and dihydroxy compounds
C08L 67/02 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
67Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
02Polyesters derived from dicarboxylic acids and dihydroxy compounds
C08L 69/00 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
69Compositions of polycarbonates; Compositions of derivatives of polycarbonates
Applicants
  • 大阪ガスケミカル株式会社 OSAKA GAS CHEMICALS CO., LTD. [JP]/[JP]
Inventors
  • 大田 善也 OTA Yoshiya
  • 亀井 慎一 KAMEI Shinichi
  • 増田 永善 MASUDA Nagayoshi
Agents
  • 鍬田 充生 KUWATA Mitsuo
  • 阪中 浩 SAKANAKA Hiroshi
Priority Data
2019-09118914.05.2019JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) POLARIZING PLATE PROTECTIVE FILM AND METHOD FOR PRODUCING SAME, AND POLARIZING PLATE
(FR) FILM DE PROTECTION DE PLAQUE POLARISANTE ET SON PROCÉDÉ DE PRODUCTION ET PLAQUE POLARISANTE
(JA) 偏光板保護フィルムおよびその製造方法ならびに偏光板
Abstract
(EN)
A polarizing plate protective film having an in-plane phase difference R0 of 0 to 10 nm and a thickness direction phase difference Rth of 0 to 150 nm is prepared by producing a film by coating of a liquid composition comprising a fluorene polyester resin and an aromatic polycarbonate resin. At least one constituent unit of the diol unit (A) and the dicarboxylic acid unit (B) of the fluorene polyester resin has at least one fluorene skeleton of a fluorene-9,9-diyl skeleton and a fluorene-9-yl skeleton. The polarizing plate protective film, even though it is formed from a polymer alloy that contains polycarbonate resin, which readily raises the birefringence, is thin, exhibits a low birefringence or phase difference (in-plane phase difference R0 and thickness direction phase difference Rth), and can suppress rainbow spots and light leakage.
(FR)
La présente invention concerne un film de protection de plaque polarisante ayant une différence de phase dans le plan (R0) comprise entre 0 et 10 nm et une différence de phase dans le sens de l'épaisseur (Rth) comprise entre 0 et 150 nm qui est préparé par production d'un film par revêtement d'une composition liquide comprenant une résine de polyester de fluorène et une résine de polycarbonate aromatique. Au moins une unité constitutive de l'unité diol (A) et de l'unité acide dicarboxylique (B) de la résine de polyester de fluorène possède au moins un squelette fluorène d'un squelette fluorène-9,9-diyle et un squelette fluorène-9-yle. Le film de protection de plaque polarisante, même s'il est formé à partir d'un alliage de polymère qui contient une résine de polycarbonate, qui élève facilement la biréfringence, est mince, présente une faible biréfringence ou une faible différence de phase (différence de phase dans le plan (R0) et différence de phase dans le sens de l'épaisseur (Rth)) et peut supprimer des taches d'arc-en-ciel et une fuite de lumière.
(JA)
フルオレンポリエステル樹脂と、芳香族ポリカーボネート樹脂とを含む液状組成物をコーティングにより製膜し、面内位相差R0が0~10nmであり、かつ厚み方向位相差Rthが0~150nmである偏光板保護フィルムを調製する。前記フルオレンポリエステル樹脂は、ジオール単位(A)およびジカルボン酸単位(B)の少なくとも一方の構成単位がフルオレン-9,9-ジイル骨格およびフルオレン-9-イル骨格の少なくとも一方のフルオレン骨格を有する。前記偏光板保護フィルムは、複屈折が上昇し易いポリカーボネート樹脂を含むポリマーアロイで形成されていても、薄肉であり、かつ低い複屈折または位相差(面内位相差R0および厚み方向位相差Rth)を示し、虹むらや光漏れを抑制できる。
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