| 摘要 |
The invention relates to novel azo dyes of the formula <IMAGE> (1) wherein R1 is an alkyl radical containing 1 to 12 carbon atoms, which is unsubstituted or substituted by hydroxy, alkoxy, cyano or phenyl, or is an aryl radical selected from the group consisting of phenyl, 1-naphthyl, 2-naphthyl, 2-pyridyl, 4-pyridyl, 2-pyrimidinyl and 2-thienyl, these radicals being unsubstituted or substituted by halogen, C1-C6alkyl, C1-C4alkoxy, nitro, cyano, -NHR3, -NH-C2-C6alkanoyl,-NH-benzoyl, phenoxy, COOR3, -CONHR3, phenyl, sulfo or C1-C4alkylsulfone, R2 is hydrogen or a radical as defined for R1, R3 is hydrogen, C1-C6alkyl, which is unsubstituted or substituted by hydroxy, alkoxy, cyano or phenyl, or phenyl which is unsubstituted or substituted by halogen, C1-C6alkyl, C1-C4alkoxy, nitro, cyano, -NH-C2-C6alkanoyl, -NH-benzoyl, phenoxy, phenyl, sulfo or C1-C4alkylsulfone, and KK is the radical of a coupling component selected from the group consisting of N-arylacetamides, phenols, pyridones, quinolines, pyrazoles, indoles, diphenylamines, anilines, aminopyridines, pyrimidines, pyrimidones, naphthols, naphthylamines, aminothiazoles, thiophenes and hydroxypyrimidines. Those dyes of formula (1) which do not have a water-solubilizing group are particularly suitable for the dyeing and printing of textile material made of polyester fibers. Those dyes which contain at least one sulfo group are particularly suitable for the dyeing and printing of textile material made of polyamide fibers.
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