102590 ⎘
Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves with the reactive group not directly attached to a heterocyclic ring the reactive group being an ethylenimino or N—acylated ethylenimino group or a —CO—NH—CH—CH—X group, wherein X is a halogen atom, a quaternary ammonium group or O—acyl and acyl is derived from an organic or inorganic acid, or a beta—substituted ethylamine group; Azo dyes Metal complex azo dyes