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    • 13. 发明授权
    • Stilbene dyestuffs and light-polarizing films or sheets containing
stilbene
    • 二苯乙烯染料和含有二苯乙烯的光偏振膜或片
    • US5272259A
    • 1993-12-21
    • US890332
    • 1992-05-26
    • Uwe ClaussenFriedrich W. Krock
    • Uwe ClaussenFriedrich W. Krock
    • C08K5/42C09B35/215C09B56/04C09K19/60G02B1/08
    • G02B1/08C08K5/42C09B35/215C09B56/04C09K19/60
    • Dyestuffs which in the form of the free acid conform to the formula ##STR1## in which X and Y independently represent --N.dbd.N--R, --CF.sub.3, --CONH.sub.2, --CONHR.sup.1, --CONR.sup.1 R.sup.2, --COOH, --COOR.sup.1, --CN, --NO.sub.2, --NH.sub.2, --NHR.sup.1, --NR.sup.1 R.sup.2, --OH, --OR.sup.1, --R.sup.1 CONH--, --O--CO--R.sup.1, halogen or a substituted or unsubstituted heterocyclic radical, provided that at least one of the radicals X or Y represents --N.dbd.N--R, in whichR represents an aryl or heterocyclic radical, andR.sup.1 and R.sup.2 independently represent alkyl, cycloalkyl, aryl or aralkyl, which are uninterrupted or interrupted by O, S or both O and S,and in which furthermore the radicals mentioned for R, R.sup.1 and R.sup.2 are unsubstituted or substituted, the dyestuff contains a maximum of eight azo bridges, and with the exception of the dyestuff which, in the form of its free acid, conforms to the formula I wherein ##STR2## and light-polarizing films or sheets containing an organic polymer, preferably a vinyl alcohol homopolymer or copolymer, and dyestuff I.
    • 游离酸形式的染料符合其中X和Y独立地表示-N = NR,-CF 3,-CONH 2,-CONHR 1,-CONR 1 R 2,-COOH,-COOR 1,-CN, -NO 2,-NH 2,-NHR 1,-NR 1 R 2,-OH,-OR 1,-R 1 CONH-,-O-CO-R 1,卤素或取代或未取代的杂环基团,条件是基团X或Y中的至少一个表示 -N = NR,其中R表示芳基或杂环基,并且R 1和R 2独立地表示烷基,环烷基,芳基或芳烷基,其不被O,S或O和S两者间断或中断,此外,基团 对于R,R 1和R 2是未被取代或被取代的,染料含有最多8个偶氮桥,除了其游离酸形式的染料符合式I,其中< IMAGE& IMAGE“和含有有机聚合物,优选乙烯醇均聚物或共聚物的光偏振膜或片和染料I.