| abstract |
Salts of sulpho group-containing heterocyclic monoazo compounds correspond in one of the possible tautomeric forms to the formula I <IMAGE> in which the radicals R1 to R4, Q1, Q2, X, Y, Z and n are as defined in Claim 1 and at least one sulpho group is present as Q1 or Q2 as a quaternary ammonium salt. These salts are obtained as ready-to-use dyeing preparations; they are used for the dyeing or printing of organic substrates containing hydroxy groups or nitrogen, such as cellulose-containing textiles, leather and in particular paper. |