Disazo compounds having two 4,8 Disulfonaphthyl-2 diazo component radicals and two triazine 1,3,5 triazine rings linked by a piperazinylene radical

摘要

Compounds of the formula IMAGE +TR IMAGE wherein each R1 is independently hydrogen, halo, C1-4alkyl, C1-4alkoxy or -NHCOC1-4alkyl, each R2 is H, halo, C1-4alkyl or C1-4alkoxy, each R3 is independently halo, hydroxy, C1-4alkoxy, -NHOH, amino or an aliphatic, aromatic cycloaliphatic or saturated heterocyclic amino radical, and is divalent aliphatic or aromatic group or, together with the NH radicals to which it is attached, forms a piperazine ring, and the use thereof for dyeing or printing hydroxy group- or nitrogen-containing organic substrates after which the dyed or printed substrate is optionally treated with a cationic fixing agent.