Metallized azo thioether dyes having an azo group linking a substituted 3-hydroxypyridine nucleus to a phenyl nucleus are disclosed. The phenyl nucleus has an thioether substituent ortho to the azo group but does not have electron withdrawing substituents on the phenyl nucleus. The dyes are useful in optical recording elements.
本发明公开了
金属化偶氮
硫醚
染料,该
染料具有将取代的 3-
羟基吡啶核与苯基核相连的偶氮基团。苯基核在偶氮基团的正上方有一个
硫醚取代基,但苯基核上没有退电子取代基。这些
染料可用于光学记录元件。