申请人:Siemens Aktiengesellschaft
公开号:US04491532A1
公开(公告)日:1985-01-01
Liquid-crystal mixture with a pleochroic anthraquinone dye of the general formula ##STR1## with R.sup.1, R.sup.3, R.sup.4, R.sup.6 =H, OH, OCH.sub.3, NH.sub.2, NHCH.sub.3, NO.sub.2, characterized by the feature that ##STR2## (R.sup.7 =H, alkyl, cycloalkyl, alkoxy, alkylmercapto, amino, alkylamino, dialkylamino, nitro, cyano, halogen), ##STR3## COOR.sup.9, CH.sub.2 --OR.sup.9 (R.sup.8 =H, alkyl, cycloalkyl, alkoxy, alkylmercapto, amino, alkylamino, dialkylamino, nitro, cyano, halogen); R.sup.9 =H, alkyl and either R.sup.1, R.sup.4 =H, OH, NH.sub.2, NHCH.sub.3, NO.sub.2, NHCH.sub.3, NO.sub.2, OCH.sub.3, where at least one of the two radical is an NH.sub.2 or an NHCH.sub.3, R.sup.3 =R.sup.6 =H, or R.sup.3, R.sup.6 =H, OH, NH.sub.2, NHCH.sub.3, NO.sub.2, OCH.sub.3, where at least one of the two radicals is an NH.sub.2 or an NHCH.sub.3, R.sup.1 =R.sup.4 =H.
通用公式为##STR1##的具有偏光蒽醌染料的液晶混合物,其中R.sup.1、R.sup.3、R.sup.4、R.sup.6 =H、OH、OCH.sub.3、NH.sub.2、NHCH.sub.3、NO.sub.2,其特征在于##STR2##(R.sup.7 =H、烷基、环烷基、烷氧基、烷基巯基、氨基、烷基氨基、二烷基氨基、硝基、氰基、卤素),##STR3## COOR.sup.9、CH.sub.2 --OR.sup.9(R.sup.8 =H、烷基、环烷基、烷氧基、烷基巯基、氨基、烷基氨基、二烷基氨基、硝基、氰基、卤素);R.sup.9 =H、烷基,且R.sup.1、R.sup.4 =H、OH、NH.sub.2、NHCH.sub.3、NO.sub.2、NHCH.sub.3、NO.sub.2、OCH.sub.3,其中至少有一个基团是NH.sub.2或NHCH.sub.3,R.sup.3 =R.sup.6 =H,或R.sup.3、R.sup.6 =H、OH、NH.sub.2、NHCH.sub.3、NO.sub.2、OCH.sub.3,其中至少有一个基团是NH.sub.2或NHCH.sub.3,R.sup.1 =R.sup.4 =H。