Dyestuffs of the formula ##STR1## wherein R.sub.1 is hydrogen or a low-molecular alkyl group, R.sub.2 is hydrogen, a low-molecular alkyl group, an aryl radical or the radical of an organic dyestuff containing sulpho groups, and R.sub.1 and R.sub.2 together with the nitrogen atom can form a ring, X.sub.1 and X.sub.2 are hydrogen, a sulpho group or the --N.dbd.N--K radical, wherein K is the radical of a coupling component and, if one X is the --N.dbd.N--K radical, the other X is a sulpho group, and the benzene ring A can contain further substituents.
化学式为##STR1##的
染料,其中R.sub.1是氢或低分子烷基,R.sub.2是氢,低分子烷基,芳基基团或含有
磺酸基团的有机
染料的基团,R.sub.1和R.sub.2与氮原子一起可以形成环,X.sub.1和X.sub.2是氢,
磺酸基或--N.dbd.N--K基团,其中K是偶联组分的基团,如果一个X是--N.dbd.N--K基团,则另一个X是
磺酸基,苯环A可以含有进一步的取代基。