JP2002275381A5 - - Google Patents

Description

（式中、Ａは、１〜３個のスルホを有するナフチルを表すか、或いは、スルホ及びカルボキシルから選ばれる１〜２個の水溶性基を有し、炭素数１〜４の直鎖若しくは分岐状のアルキル又は炭素数１〜４の直鎖若しくは分岐状のアルコキシを有していてもよいフェニルを表し、Ｒ¹〜Ｒ⁶は、同一又は相異なり、水素、炭素数１〜４の直鎖若しくは分岐状のアルキル又は炭素数１〜４の直鎖若しくは分岐状のアルコキシを表し、Ｒ⁷は水素若しくはスルホを表し、Ｄは−ＮＨＣＯ−、−Ｎ＝Ｎ−若しくは−ＮＨ−を表し、Ｅはヒドロキシ、アミノ、ニトロ、スルホ、カルボキシル、炭素数１〜４の直鎖若しくは分岐状のアルキル及び炭素数１〜４の直鎖若しくは分岐状のアルコキシから選ばれる1〜３個の基を有していてもよいフェニルを表す。）
で示されるポリアゾ化合物又はその塩。
【請求項２】
Ａが、２〜３個のスルホを有する２−ナフチルであるか、又は、スルホ及びカルボキシルから選ばれる１〜２個の水溶性基を有するフェニルである請求項１に記載のポリアゾ化合物又はその塩。
【請求項３】
Ｒ¹〜Ｒ⁶が、同一又は相異なり、水素若しくはメチルである請求項１〜２に記載のポリアゾ化合物又はその塩。
【請求項４】
Ｅが、ｐ−ヒドロキシフェニル若しくはｐ−アミノフェニルである請求項１〜３に記載のアゾ化合物又はその塩。
【請求項５】
請求項１〜４のいずれかに記載のポリアゾ化合物又はその塩を偏光膜基材に含有してなる染料系偏光膜。
【請求項６】
偏光膜基材が、ポリビニルアルコール系の樹脂からなるフィルムである請求項５に記載の染料系偏光膜。
[Claims]
(1)
The following formula (I)
Embedded image

(In the formula, A, or naphthyl having 1 to 3 sulfo, walk has 1-2 water-soluble groups selected from sulfo and carboxyl, straight-chain having 1 to 4 carbon atoms or branched alkyl or represents phenyl which may have a straight-chain or branched alkoxy having 1 to 4 carbon atoms, R ¹ to R ⁶ are the same or different, hydrogen, 1 to 4 carbon atoms linear or branched alkyl or represents straight-chain or branched alkoxy having 1 to 4 carbon atoms, R ⁷ represents hydrogen or sulfo, D is -NHCO -, - N = N- or -NH- Wherein E is 1 to 3 carbon atoms selected from hydroxy, amino, nitro, sulfo, carboxyl, linear or branched alkyl having 1 to 4 carbons and linear or branched alkoxy having 1 to 4 carbons Represents phenyl optionally having a group )
Or a salt thereof.
(2)
A is 2-naphthyl having 2 to 3 sulfos, or phenyl having 1 to 2 water-soluble groups selected from sulfo and carboxyl, or the polyazo compound or salt thereof according to claim 1. .
(3)
The polyazo compound or a salt thereof according to claim 1, wherein R ^{1 to} R ⁶ are the same or different and are hydrogen or methyl.
(4)
The azo compound or a salt thereof according to claim 1, wherein E is p-hydroxyphenyl or p-aminophenyl.
Claim 5.
A dye-based polarizing film comprising the polarizing film substrate containing the polyazo compound or a salt thereof according to claim 1.
6.
The dye-based polarizing film according to claim 5, wherein the polarizing film substrate is a film made of a polyvinyl alcohol-based resin.

(In the formula, A, or naphthyl having 1 to 3 sulfo, walk has 1-2 water-soluble groups selected from sulfo and carboxyl, straight-chain having 1 to 4 carbon atoms or branched alkyl or represents phenyl which may have a straight-chain or branched alkoxy having 1 to 4 carbon atoms, R ¹ to R ⁶ are the same or different, hydrogen, 1 to 4 carbon atoms linear or branched alkyl or represents straight-chain or branched alkoxy having 1 to 4 carbon atoms, R ⁷ represents hydrogen or sulfo, D is -NHCO -, - N = N- or -NH- Wherein E is 1 to 3 carbon atoms selected from hydroxy, amino, nitro, sulfo, carboxyl, linear or branched alkyl having 1 to 4 carbons and linear or branched alkoxy having 1 to 4 carbons Represents phenyl optionally having a group )
A polyazo compound represented by or a salt thereof,
And
(B) A dye-based polarizing film comprising the above-mentioned polyazo compound (a) or a salt thereof in a polarizing film substrate.
Hereinafter, the present invention will be described in detail.