| 摘要 |
Monoazo and disazo dyes having an unsubstituted or substituted aniline or p-aminoazobenzene as diazo component and an N-substituted beta -naphthylamine of six to eighteen carbon atoms in the N-substituent as coupling component. Preferred diazo components are phenyl, tolyl, phenylazophenyl and tolylazotolyl, and preferred coupling components are provided by beta -naphthylamine which is N-monosubstituted by n-hexyl, n-octyl, beta -ethylhexyl, 3,5,5-trimethylhexyl, tridecyl, beta -ethylhexoxypropyl, cyclohexyl, benzyl or phenylethyl. The dyes are eminently suitable for the coloring of for example mineral oils, gasoline, fats and waxes because of their excellent solubilities.
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