Dyestuffs of the formula D--N.dbd.N--A I in which D represents the radical of a diazo component and A represents the radical of a coupling component of the formulae ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 designate hydrogen or non-ionic radicals, R designates hydrogen or an optionally substituted alkyl, cycloalkyl, aryl, aralkyl or heterocyclic radical, X designates OH or ##STR2## T designates the remaining members of a fused-on ring and Y and Z designate hydrogen, optionally substituted alkyl or optionally substituted aryl, processes for their preparation and process for pigmenting organic material using the dyestuffs of the formula I.
公式为D--N.dbd.N--A的
染料,其中D表示重氮组分的基团,A表示偶联组分的基团,其
化学式为 ##STR1## 其中R.sub.1,R.sub.2和R.sub.3代表氢或非离子基团,R代表氢或可选取代的烷基,环烷基,芳香基,芳基烷基或杂环基团,X代表OH或 ##STR2## T代表一个融合环上的其余成员,Y和Z代表氢,可选取代的烷基或可选取代的芳基。本发明还提供了制备这些
染料的方法以及使用公式I
染料对有机材料进行着色的方法。