FIBRE REACTIVE AZO REACTIVE COLORANTS CONTAINING TWO REACTIVE GROUPS OF THE VINYLSULFONE TYPE, PRODUCTION AND USE THEREOF

摘要

Water soluble dyestuffs having two vinylsulfone reactive groups in the form of free acid of the formula (1) and salts thereof (1) wherein X is -NHCN, -NHR, -N (CH 3 ) R, -O- R, or -S- R or X is a heterocyclic radical of the formula wherein W has one of the meanings of R, wherein R is selected from C1-C6-Alkyl, which is substituted by at least one sulfo, sulfato, phosphate, thiosulfato or carboxy substituent, and optionally by further substituents such as hydroxy; R a is Hydrogen or C1-C4-alkyl, which is non-substituted or may be substituted; R b has one of the meanings of R a, K is a radical of the benzene or naphthalene series which is substituted by amino, hydroxy, Acylamino, Ureido, C1-C3 alkoxy, C1-C3 alkyl, halogen, nitro or carboxy groups and is optionally further substituted by 1 or 2 Sulfo groups; K 2 has one of the meanings of K, D is a benzene or naphthalene radical which is non-substituted or substituted by one 20 or more substituents selected from sulfo, C1-C4 alkyl, C1-C4 alkoxy or halogen, D2 has one of the meanings of D1, Y is Vinyl or CH2CH2-L in which L is a leaving group, which can be applied as single dye or as mixture for dyeing a wide variety of fibre materials selected from, cellulose, polyamide or protein fibres to achieve very deep 2 shades with better fastness to washing, and contact fastness to water, acid and alkaline perspiration.