Acid azo dyes from a 3-amino-benzisothiazole-[2,1]-5-sulfonic acid diazo component

摘要

Acid monoazo dyes of the formula <IMAGE> in which X is hydrogen, chloro, bromo, nitro, C1 to C4 alkyl, methoxy, ethoxy or C2 to C4 alkanoylamino and K is a radical of a coupling compound as defined below. The dyes are suitable for dyeing natural or synthetic polyamides giving colorations with very good fastness properties.