OPTICAL FILM, POLARIZING PLATE, AND IMAGE DISPLAY DEVICE

PROBLEM TO BE SOLVED: To provide an optical film that exhibits a desired performance even in film making at high temperature.SOLUTION: The present invention provides an optical film comprising following components (A),(B),(C) and having a light transmittance for light at the wavelength of 380 nm of...

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Bibliographische Detailangaben
Hauptverfasser:	KATAOKA NAOTO, MASUDA NAGAHIRO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	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
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an optical film that exhibits a desired performance even in film making at high temperature.SOLUTION: The present invention provides an optical film comprising following components (A),(B),(C) and having a light transmittance for light at the wavelength of 380 nm of 10% or less, and a yellowness of 2.5 or less, wherein the component (A) is acrylic resin with a glass transition temperature of 110°C or higher, (B) is ultraviolet absorber with a 1% weight loss temperature of 350°C or higher and (C) is fluorescent brightener with a 1% weight loss temperature of 300°C or higher.SELECTED DRAWING: None 【課題】高温を伴う製膜であっても、所望性能の発揮する光学フィルム等を提供する。【解決手段】以下の成分（Ａ），（Ｂ），（Ｃ）を含有し、波長３８０ｎｍの光に対する光透過率が１０％以下、かつ、黄色度が２．５以下である光学フィルム。（Ａ）ガラス転移温度が１１０℃以上であるアクリル系樹脂（Ｂ）１％重量減少温度が３５０℃以上である紫外線吸収剤（Ｃ）１％重量減少温度が３００℃以上である蛍光増白剤【選択図】なし