ACRYLIC FILM HAVING LOW WATER VAPOR TRANSMITTANCE, AND POLARIZING PLATE AND PANEL, WHICH COMPRISE SAME

• Main Authors: KANG, Kyung Ryun, EUN, Jong Hyuk, KIM, Kyung Soo, KANG, Ji Hye
• Format: Patent
• Language: English; French; Korean
• Published: 24.10.2019
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; ORGANIC MACROMOLECULAR COMPOUNDS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

The present invention provides: an acrylic film manufactured, by a solvent casting method, from a main dope comprising a compound represented by the following chemical formula 1 and an acrylic resin, the acrylic film having an in-plane retardation Ro, measured under conditions of 23°C and 55%RH, of 0-5 nm, having an out-of-plane retardation Rth of -10 to -3 nm, and having a water vapor transmittance rate of 150 g/m2·24h or less in a high-temperature high-humidity environment of 60°C and 90%RH; and a polarizing plate and a panel, which comprise the acrylic film. [Chemical formula 1] In chemical formula 1, R1 is a substituted or unsubstituted ring-forming C6-50 aryl group, R2 and R3 are respectively and independently a hydrogen atom, a halogen atom, a hydroxyl group or a substituted or unsubstituted C1-12 alkyl group, m:n is 100:0 to 50:50, and the molecular weight is 130,000-200,000 g/mol. L'invention concerne un film acrylique fabriqué par un procédé de coulage au solvant, à partir d'un dopant principal comprenant un composé représenté par la formule chimique 1 suivante; et une résine acrylique. Le film acrylique présente : un retard dans le plan (Ro) mesuré dans des conditions de 23°C et 55% RH de 0 à 5 nm; un retard hors plan de -10 à -3 nm; et un taux de transmittance de vapeur d'eau d'au plus 150 g/m2 sur 24h, dans un environnement à haute température et forte humidité de 60°C et 90% RH. L'invention concerne également une plaque polarisante et un panneau comprenant le film acrylique. Dans la formule chimique 1, R1 est un groupe aryle C6-50 substitué ou insubstitué formant un cycle; R2 et R3 sont respectivement et indépendamment un atome d'hydrogène, un atome d'halogène, un groupe hydroxyle ou un groupe alkyle C1-12 substitué ou insubstitué; m:n est 100:0 à 50:50; et le poids moléculaire est de 130 000 à 200 000 g/mol. 본 발명은 하기 화학식 1로 표시되는 화합물 및 아크릴 수지를 포함하는 주 도프액을 솔벤트 캐스팅 방법으로 제조하여, 23℃, 55％RH의 조건하에서 측정한 면내 리타데이션 Ro가 0 내지 5nm 이고, 두께 방향 리타데이션 Rth가 -10 내지 -3nm이고, 60℃, 90%RH의 고온 다습한 환경에서 투습도가 150g/m 2·24h 이하인 아크릴 필름을 제공하며, 또한 아크릴 필름을 포함하는 편광판 및 패널을 제공한다. [화학식 1] 상기 화학식 1에서, R1은 치환 또는 비치환된 고리 형성 탄소수 6~50의 아릴기이고, R2 및 R3는 각각 독립적으로 수소 원자, 할로겐 원자, 하이드록시기, 또는 치환 또는 비치환된 탄소수 1~12의 알킬기이며, m과 n의 구성비는 100 : 0 내지 50 : 50이고, 분자량은 130,000g/mol 내지 200,000g/mol이다.