Yellow-orange water sol monazo dyes - for dyeing/printing natural or regenerated cellulose, wool, silk, leather polyamides, pol

摘要

Dyes have the formula (I) in the free acid form (where A and A' are residues of the benzene series; Z1 is a bivalent bridge-forming gp. e.g. -NHCO-, N (lower alkyl)-CO-, -CONH-, -CO-N(lower alkyl)-, -NH-SO2-, -N(loweralkyl)-, -NH-SO2-, -N-(loweralkyl) -SO2-, -CO-, -SO2-, -NH-, -S-, -O-, or lower alkylene; X is a gp. linked to A and/or A', of formula (II) or (III), -(Y)p-SO2-CH2-CH2-Z (II) -(Y)p-SO2-CH=CH2 (III) Z is an (in)organic gp. eliminable by treatment with alkali, or OH; Y is -CH2- or -CH2CH2-; m and p are each 0 or 1; n is 1 or 2).