| abstract |
There are described formazan dyes of the formula <IMAGE> where m and n are each 1 or 2, Kat is the equivalent of a cation, Me is copper or nickel, X is oxygen or a radical of the formula CO-O or SO2-O, Y is vinyl or a radical of the formula C2H4-Q, wherein Q is a group that is detachable under alkaline reaction conditions, E is a fiber-reactive radical, the rings A and B may be substituted and benzofused, and the ring C may be substituted, the use thereof for dyeing or printing hydroxyl- or nitrogen-containing organic substrates, novel aminophenols and a process for preparing same. |