containing acid groups, e.g. —COOH, —SO3H, —PO3H2, —OSO3H, —OPO2H2; Salts thereof

Full Title

Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling > Disazo dyes > from a coupling component "C" containing a directive hydroxyl group > ortho-Hydroxy carboxylic acid amides > containing acid groups, e.g. —COOH, —SO3H, —PO3H2, —OSO3H, —OPO2H2; Salts thereof