申请人:BASF Aktiengesellschaft
公开号:US05122435A1
公开(公告)日:1992-06-16
Amido-containing azulene-aquaric acid dyes of the formula ##STR1## where L is C.sub.1 -C.sub.12 -alkylene which may be substituted by phenyl, R.sup.1 and R.sup.2 are each independently of the other hydrogen, substituted or unsubstituted C.sub.1 -C.sub.20 -alkyl, C.sub.5 -C.sub.7 -cycloalkyl, substituted or unsubstituted phenyl, 2,2,6,6-tetramethylpiperidin-4-yl or cyclohexylaminocarbonyl and R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are each independently of the others hydrogen or substituted or unsubstituted C.sub.1 -C.sub.12 -alkyl, with the proviso that when R.sup.6 is hydrogen the positions of the substituents CH.sub.2 --L--CO--NR.sup.1 R.sup.2 and R.sup.5 on either or both azulene rings may also be interchanged with each other within an azulene ring are used in an optical recording medium.
含有Amido的蓝花族-水杨酸染料的化学式为##STR1## 其中L为C.sub.1-C.sub.12-烷基,可以被苯基取代,R.sup.1和R.sup.2各自独立地为氢,取代或未取代的C.sub.1-C.sub.20-烷基,C.sub.5-C.sub.7-环烷基,取代或未取代的苯基,2,2,6,6-四甲基哌啶-4-基或环己基氨基甲酰基,R.sup.3,R.sup.4,R.sup.5和R.sup.6各自独立地为氢或取代或未取代的C.sub.1-C.sub.12-烷基,但当R.sup.6为氢时,两个或两个以上的花族环上的取代基CH.sub.2--L--CO--NR.sup.1R.sup.2和R.sup.5的位置也可以在花族环内相互交换,在光学记录介质中使用。