Process for dyeing anionically modified synthetic fiber materials

Claim 1

In the process of dyeing an anionically modified fiber material by exhaustion from a dyebath consisting essentially of a cationic dyestuff dissolved in halogenated hydrocarbon the improvement comprising the use as said cationic dyestuff a dyestuff soluble in said halogenated hydrocarbon and having the formula ##STR12## in which A - is a non-lipophilic anion; R 12 is hydrogen, alkyl, aralkkyl, cycloalkyl or aryl; R 13 is hydrogen, alkyl, cycloalkyl or aralkyl, or R 12 and R 13 together with the nitrogen atom form a heterocyclic ring which can contain further hetero-atoms; R 14 is hydrogen, halogen, alkoxy, aralkoxy, aryloxy, acyloxy, alkyl, aralkyl, aryl, nitro, CN, trifluoromethyl, carboxylic acid ester, carbonamide, N-substituted carbonamide, acyl, alkysulphonyl or arylsulphonyl or ##STR13## in which R 9 is hydrogen, alkyl, alkoxy or halogen; R 10 is hydrogen, alkyl, aralkyl, cycloalkyl or aryl; R 11 is alkyl, aryl, carboxylic acid ester, carbonamide or substituted carbonamide; R 15 is hydrogen, alkyl, cycloalkyl or aralkyl; R 16 is hydrogen, alkyl, aralkyl, cycloalkyl or aryl; or R 15 and R 16 , together with the nitrogen atom, form a heterocyclic ring which can contain further hetero-atoms; R 17 is hydrogen, halogen, alkyl or alkoxy, and in which the aromatic carbocyclic rings of the dyestuff cation can be condensed with carbocyclic rings and additionally the substituents R 9 , R 14 and R 17 can contan further non-ionic substituents; with the proviso that at least one of the substituents R 9 , R 11 , R 14 or R 17 is a C 3 -C 13 -alkyl, C 3 -C 12 -alkoxy or C 5 -C 6 -cycloalkyl group or R 10 is a C 3 -C 12 -alkyl or C 5 -C 6 -cycloalkyl group.