| abstract |
Dyestuffs of the formula WHEREIN R, R', R'' and R''' denote hydrogen, methyl, ethyl or propyl, but at least two of the radicals R, R', R'' and R''' denote hydrogen, R2 denotes a non-ionic substituent, R3 denotes alkyl, alkenyl, cycloalkyl or aralkyl, R4 denotes an acyclic saturated or unsaturated unsubstituted hydrocarbon radical, halogenoalkyl, alkoxyalkyl, hydroxyalkyl, hydroxy-alkoxyalkyl, halogenohydroxyalkyl, cyanoalkyl, carboxyalkyl, aminocarbonylalkyl, acyloxyalkyl, cycloalkoxyalkyl, cycloalkenyloxyalkyl, aroyloxyalkyl, aroxyalkoxyalkyl, aralkoxyalkyl, arylthioalkyl, cycloalkyl, aralkyl, aroxyalkyl or arylaminocarbonyloxyalkyl, R5 denotes a non-ionic substituent or a carboxyl group, P DENOTES THE NUMBERS 0, 1, 2, 3 OR 4, N DENOTES THE NUMBERS 0, 1, 2 OR 3 AND X<-> denotes an anion. |