Abstract: Cationic dyestuffs of the general formula ##STR1## wherein R.sub.1 represents hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 - to C.sub.4 -alkoxy, nitro or halogen,R.sub.2 represents hydrogen, C.sub.1 - to C.sub.4 -alkyl, C.sub.1 - to C.sub.4 -alkoxy, halogen or phenylazo,R.sub.3 represents C.sub.1 - to C.sub.3 -alkyl andA.sup..crclbar. represents an anion,are prepared by reacting azo bases of the general formula ##STR2## wherein R.sub.1 and R.sub.2 have the abovementioned meaning, or the salts thereof with inorganic or organic acids, with dialkyl sulphates of the general formula(R.sub.3 --O--).sub.2 SO.sub.2 IIIwherein R.sub.3 has the abovementioned meaning, in the absence of organic solvents and in the presence of water, the weight ratio of azo base to water being 100:20-300 and the molar ratio of azo base to dialkyl sulphate being 1:3.5-5.0, and, if desired, by replacing the alkyl-sulphate anion with another anion.

Abstract: Cationic dyestuffs of the general formula ##STR1## wherein R.sub.1 represents hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 - to C.sub.4 - alkoxy, nitro or halogen,R.sub.2 represents hydrogen, C.sub.1 - to C.sub.4 -alkyl, C.sub.1 - to C.sub.4 -alkoxy, halogen or phenylazo,R.sub.3 represents C.sub.1 - to C.sub.3 -alkyl andA.crclbar. represents an anion,are prepared by reacting azo bases of the general formula ##STR2## wherein R.sub.1, R.sub.2 and R.sub.3 have the abovementioned meaning, with dialkyl sulphates of the general formula(R.sub.3 --O--).sub.2 SO.sub.2 (III)wherein R.sub.3 has the abovementioned meaning, in the absence of organic solvents and in the presence of water, the weight ratio of azo base to water being 100:15-100 and the molar ratio of azo base to dialkyl sulphate being 1:1.5-2.5, and, if desired, by replacing the alkyl-sulphate anion with another anion.

Abstract: Compounds of the formula ##STR1## wherein E denotes a reactive substituent which can be split off,D denotes hydrogen, optionally substituted alkyl, aryl, aralkyl, aminocarbonyl, mono- or di-alkylaminocarbonyl, optionally substituted alkoxy, alkylthio, aryloxy, arylthio, aralkoxy or aralkylthio, or a radical of the formula ##STR2## G and G.sub.1 independently of one another denote hydrogen, optionally substituted alkyl, aryl or aralkyl, or, together with N, a 5-membered or 6-membered ring,B and B.sub.1 independently of one another denote a linking member--X--Y--Z--Y.sub.1 --whereinX is bonded to the triazine radical and denotes oxygen, sulphur or ##STR3## R denotes hydrogen, optionally substituted alkyl, alkenyl or aralkyl, Y denotes ##STR4## n denotes a number from 0 to 4, Z denotes an optionally substituted phenylene or naphthylene radical or the radical of the formula --CH.dbd.CH--,Y.sub.1 denotes a radical of the formula ##STR5## n.sub.1 denotes a number from 0 to 4, n and n.sub.