CELLULOSE ACYLATE FILM, OPTICAL FILM, POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY DEVICE

• Main Authors: SHINODA KATSUMI, SATA HIROAKI
• Format: Patent
• Language: English; Japanese
• Published: 16.11.2017
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; 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

PROBLEM TO BE SOLVED: To provide: a cellulose acylate film which has a low haze, a small moisture dimensional change rate, and excellent adhesion to a cured layer when the cured layer is laminated thereon; an optical film and a polarizing plate, each of which uses the cellulose acylate film; and a liquid crystal display device which comprises the polarizing plate.SOLUTION: The present invention provides: a cellulose acylate film which contains cellulose acylate, where the cellulose acylate has an acyl group (A) represented by general formula (A) described herein and an acryl group (B) having 2-4 carbon atoms, while satisfying formulas (1)-(6) described herein; an optical film and a polarizing plate, each of which uses the cellulose acylate film; and a liquid crystal display device which comprises the polarizing plate.SELECTED DRAWING: None 【課題】ヘイズが低く、湿度寸法変化率が小さく、かつ硬化層を積層した場合に、硬化層との密着性に優れるセルロースアシレートフィルム、上記セルロースアシレートフィルムを用いた光学フィルム及び偏光板、並びに上記偏光板を含む液晶表示装置を提供すること。【解決手段】セルロースアシレートを含有するセルロースアシレートフィルムであって、セルロースアシレートは、明細書に記載の一般式（Ａ）で表されるアシル基（Ａ）、及び炭素数２〜４のアシル基（Ｂ）を有し、明細書に記載の式（１）〜（６）を満たす、セルロースアシレートフィルム、上記セルロースアシレートフィルムを用いた光学フィルム及び偏光板、並びに上記偏光板を含む液晶表示装置。【選択図】なし