Dichroic azo dye, liquid crystal composition containing the same, and liquid crystal element using the composition
    2.
    发明公开
    Dichroic azo dye, liquid crystal composition containing the same, and liquid crystal element using the composition 失效
    分色含有该液晶组成物及液晶元件包含所述组合物的偶氮染料。

    公开(公告)号:EP0652261A1

    公开(公告)日:1995-05-10

    申请号:EP94117359.3

    申请日:1994-11-03

    IPC分类号: C09B35/10 C09B35/56 C09K19/60

    摘要: A dichroic dye represented by formula (I) or (II):

    wherein R¹ and R² each represent a hydrogen atom or a nonionic substituent; X¹ and X¹ each represent

    Z¹, Z², Z³, Z⁴, Z⁵, Z⁶, Z⁷, Z⁸, Z⁹, Z¹⁰, Z¹¹, and Z¹² each represent a hydrogen atom, a halogen atom, a methyl group or a methoxy group; Z¹ and Z², Z⁴ and Z⁵, Z⁷ and Z⁸, or Z¹⁰ and Z¹¹ may be connected to each other to form an aliphatic, aromatic or nitrogen-containing aromatic ring; and n and m each represent 0, 1 or 2

    wherein R¹¹, R¹², R¹³, and R¹⁴ each represent a hydrogen atom, an alkyl group, an alkoxyalkyl group, a substituted or unsubstituted aralkyl group or a fluoroalkyl-substituted alkyl group, provided that a compound in which R¹¹ is a hydrogen atom and R¹² is a substituted or unsubstituted aralkyl group and a compound in which R¹³ is a hydrogen atom and R¹⁴ is a substituted or unsubstituted aralkyl group are excluded; R¹¹ and R¹², or R¹³ and R¹⁴ may be connected to each other to form a nitrogen-containing aliphatic ring; Z²¹, Z²², Z²³, Z²⁴, Z²⁵, Z²⁶, Z²⁷, Z²⁸, Z²⁹, Z³⁰, Z³¹, and Z³² each represent a hydrogen atom, a halogen atom, a methyl group or a methoxy group; Z²¹ and Z²², Z²⁴ and Z²⁵, Z²⁷ and Z²⁸, or Z³⁰ and Z³¹ may be connected to each other to form an aliphatic, aromatic or nitrogen-containing aromatic ring; R¹¹ and Z²³, R¹² and Z²¹, R¹³ and Z³², or R¹⁴ and Z³¹ may be connected to each other to form a nitrogen-containing aliphatic ring; and p and q each represent 0, 1 or 2, provided that p and q are not simultaneously 0.
    The dichroic dyes (I) and (II) exhibit excellent dichroism and can be prepared from 2,2'-ditrifluoromethylbenzidine having no toxicity, such as mutagenicity.

    摘要翻译: 二色性染料由式(I)或(II)表示:其中,R <1>和R <2>分别表示氢原子或取代基非离子; X <1>和X <1>各自表示ž<1>,Z <2>,Z <3>,Z <4>,Z <5>,Z <6>,Z <7>,Z <8>,Z <9>,Z <1> <0>,Z <1> <1>,和Z <1> <2>分别表示氢原子,卤原子,甲基或甲氧基 ; ž<1>和Z <2>,Z <4>和Z <5>,Z <7>和Z <8>,或Z <1> <0>和Z <1> <1>也可以被连接到 海誓山盟以形成脂族,芳族或芳族环的含氮; 和n和m各自表示0,1或2个其中,R <1> <1>,R <1> <2>,R <1> <3>,和R <1> <4>的每一个代表 氢原子的烷基,在烷氧基烷基,提供了一种substituiertem奥德unsubstituiertem芳烷基或氟烷基substituiertem烷基,做了化合物,其中R <1> <1>是一个氢原子,R <1> <2> 是一个substituiertem奥德unsubstituiertem芳烷基和一化合物,其中R <1> <3>是一个氢原子,R <1> <4>由substituiertem奥德unsubstituiertem芳烷基被排除; [R <1> <1>和R <1> <2>,或R <1> <3>和R <1> <4>可以连接到海誓山盟以形成的含氮脂族环; ž<2> <1>,Z <2> <2>,Z <2> <3>,Z <2> <4>,Z <2> <5>,Z <2> <6>,Z < 2> <7>,Z <2> <8>,Z <2> <9>,Z <3> <0>,Z <3> <1>,和Z <3> <2>分别表示氢 原子,卤原子,甲基或甲氧基; ž<2> <1>和Z <2> <2>,Z <2> <4>和Z <2> <5>,Z <2> <7>和Z <2> <8>,或Z <3> <0>和Z <3> <1>可以连接到海誓山盟以形成脂族,芳族或芳族环的含氮; [R <1> <1>和Z <2> <3>,R <1> <2>和Z <2> <1>,R <1> <3>和Z <3> <2>,或R <1> <4>和Z <3> <1>可以连接到海誓山盟以形成的含氮脂族环; p和q各自表示0,1或2,条件p和q是没有不同时为0的二色性染料(II)(I)和表现出优异的二色性,并且可以从2,2'- ditrifluoromethylbenzidine不具有毒性来制备, :例如诱变性。