GB1431963A - Cationic dyestuffs - Google Patents

Abstract

1431963 Cationic dyes BAYER AG 5 Sept 1973 [6 Sept 1972] 41674/73 Heading C4P Cationic dyes are of formula in which the or each R 1 is each halogen, alkyl, cycloalkyl, aralkyl, heterylalkyl (as defined), NO 2 , CN, acyl, acylamino, amino, alkylsulphonyl, arylsulphonyl, alkoxy, aryloxy, aralkoxy, carboxyl, alkoxycarbonyl, aryloxycarbonyl or aralkoxycarbon or is aminocarbonyl or amino-sulphonyl optionally N- substituted by alkyl, aryl or aralkyl; R 2 and R 4 are each alkyl, alkenyl, cycloalkyl, aryl, aralkyl or heterylalkyl; R 3 is H, halogen, alkyl or alkoxy, R 5 and R 6 are each alkyl, cycloalkyl, aralkyl or heterylalkyl; n is 0-3; An is an anion; each alkyl group or moiety contains up to 6 C atoms and may optionally be substituted by one or more carboxyl groups and/or ionic substituents (other than aryl), the alkenyl radicals contain up to 6 C atoms; and the alkenyl, cycloalkyl and aryl radicals and moieties are optionally substituted by one or more non-ionic and/or carboxyl groups. The dyes may be prepared by a conventional condensation reaction or by treating the corresponding N-cyanoethyl dye with concentrated H 2 SO 4 , and have a wide range of uses. In specific dyes the indoline nucleus contains the following substituents: Cl, CH 3 , benzyl, NO 2 , CN, sulphamino, cyanoethyl, methylsulphonyl.