| abstract |
The invention provides a process for the production of azodyes and their derivatives by diazotization and coupling reactions and optionally further modification reactions, wherein a compound of formula <IMAGE> (I) in which E signifies an aromatic bivalent radical, X1 signifies hydroxy or a primary amino group, Y1 signifies hydroxy or a primary amino group and in which the aminogroup linked to the -SO2-bound phenyl radical may optionally be acylated, or a mixture of compounds of formula (I), is employed as a coupling component or/and-in the non-acylated form-as a diazo component, the invention in particular relates also to the novel dyes and their use and to the novel intermediates. |