| 摘要 |
The present invention relates to monoazo dyes which dye polyamide material with good light- and wet-fastness and which have the formula <IMAGE> (1) in which K is the radical of an amino- or alkoxy-benzene, amino- or alkoxy-naphthalene, naphthol, aminonaphthol, pyrazolone, aminopyrazole, indole, naphthimidazole, diphenylamine, tetrahydroquinoline or acetoacetamide and can be further substituted, R is hydrogen, halogen, C1-6-alkyl, trifluoromethyl, carboxyl or a -SO2-C1-6-alkyl, -SO2-R1, <IMAGE> -CO-R4 group, in which R1 is a substituted or unsubstituted phenyl- or naphthyl-C1-4-alkyl radical, R2 and R3 independently of one another are hydrogen or a substituted or unsubstituted C1-6-alkyl or C5-7-cycloalkyl radical and R4 is a substituted or unsubstituted phenyl radical, and X is hydrogen, C1-4-alkyl, C1-4-alkoxy or halogen, and in which R in formula (1) may not be hydrogen or chlorine if the radical -N=N-K is bonded to the phenyl ring in the o-position relative to the -SO2- group and K is the radical of an aminonaphthalenesulfonamide or a 2-amino-8-hydroxynaphthalene-6-sulfonic acid.
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