Compounds containing sulfonic acid groups and of the general formula I ##STR1## where D.sup.1 is a radical of a diazo component, X.sup.1 and X.sup.2 independently of one another are each hydroxyl or unsubstituted or substituted amino, Y is hydrogen, chlorine, methyl, hydroxysulfonyl or a radical of the formula D.sup.3 --N.dbd.N-- and D.sup.2 is a radical of the formula ##STR2## D.sup.3 is a radical of a diazo component from the aniline or aminonaphthalene series, K is a radical of a coupling component from the benzene or naphthalene series, and the rings in the coupling component D.sup.2 may furthermore be substituted by chlorine, methyl, methoxy, hydroxysulfonyl, aminosulfonyl, hydroxyl or acylamino, and metal complexes of such compounds, give very fast, brown dyeings, particularly on leather.
含有
磺酸基团的化合物,其一般式为I ##STR1## 其中D.sup.1是重氮组分的基团,X.sup.1和X.sup.2分别是羟基或未取代或取代的
氨基,Y是氢、
氯、甲基、羟基磺酰基或公式D.sup.3--N.dbd.N--的基团,D.sup.2是公式##STR2##的基团,D.sup.3是
苯胺或
氨基
萘系列的重氮组分的基团,K是苯或
萘系列偶联组分的基团,偶联组分D.sup.2中的环还可以被
氯、甲基、甲氧基、羟基磺酰基、
氨基磺酰基、羟基或酰胺取代,以及这种化合物的
金属配合物,在皮革上表现出非常快速的棕色染色。