Basic dyes, processes for their preparation and their use for the dyeing and printing textile materials and leather, as well as for the production of printing pastes and the write speeds flue sig

摘要

Basic yellos dyes of the hydrazone series for dyeing/Printing leather, mordanted cellulose acetate, jute, sisal, in flexographic printing, printing and writing inks, and for dyeing/printing polyacrylonitrile and acrylonitrile copolymer and acid-modified aromatic polyesters, esp. on polyacrylonitrile material, have the formula: (where R is aromatic carbocylic; R1 is H or alkyl; R2 is H, alkyl, alkoxy, amino opt. substd. by alkyl groups or by an acyl, sulphonyl or carbamoyl group; R3 is H, alkyl or alkoxy; R4 is alkyl; R5 is nitrile or opt. substd. carboxamide; R6 is H, alkyl, aralkyl or cycloalkyl; X is the radical of an anion; the aliphatic, cycloaliphatic and aromatic radicals R-R6 are unsubstd. or may be substd. by non-ionic substituents having a Hammett para sigma-constant of less than 0.7).