ジスアゾ化合物又はその塩、及びそれらの偏光膜への適用

Disazo compound or its salt, and application of them for polarizing film

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disazo compound or its salt excellent in light fastness, initial polarizing performance, etc., on making it a polarizing film, and a dyestuff-based polarizing film containing the disazo compound or its salt in a film state polarizing film substrate consisting of a polyvinyl alcohol-based resin. <P>SOLUTION: This dyestuff-based polarizing film contains the disazo compound expressed by formula (I) (wherein, A is 4-sulfophenyl or 6, 8-disulfo-2-naphthyl; and one of R<SP>1</SP>and R<SP>2</SP>is H and another is methyl) in the polarizing film substrate. <P>COPYRIGHT: (C)2004,JPO
【課題】偏光膜としたときに、耐光性や初期偏光性能等に優れたジスアゾ化合物又はその塩、及び該ジスアゾ化合物又はその塩をポリビニルアルコール系の樹脂からなるフィルム状の偏光膜基材に含有してなる染料系偏光膜を提供すること。 【解決手段】下式(I)で示されるジスアゾ化合物又はその塩。 (式中、Aは4−スルホフェニル又は6,8−ジスルホ−2−ナフチルを表す。R 1 及びR 2 は、一方が水素原子を表し、他方がメチルを表す。) 【選択図】 なし

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    JP-WO2013154139-A1December 17, 2015日本化薬株式会社, 株式会社ポラテクノ偏光素子及び偏光板
    US-7445822-B2November 04, 2008Nippon Kayaku Kabushiki Kaisha, Polatechno Co., Ltd.Azo compounds and dye-type polarizing films or plates containing the same
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