GB1031488A - Process for the production of water-soluble reactive dyestuffs - Google Patents

Abstract

Dyes of formula <FORM:1031488/C4-C5/1> wherein F is the residue of a dye containing at least one water-solubilizing group, A is the residue of bivalent aromatic, cycloaliphatic or aliphatic intermediate member which may be substituted, B is the residue of a pyrimidine or triazine compound containing halogen, R is a hydrogen atom or an alkyl, cycloalkyl or aralkyl radical, Y is an acyl radical capable of chemical combination with cellulose fibres and m is at least 1, are prepared by condensing a compound of formula <FORM:1031488/C4-C5/2> wherein G is the dyestuff residue F or the residue of a compound convertible in known manner (i.e. in actual use or described in the literature of the subject) into a dye residue F, with a compound of formula <FORM:1031488/C4-C5/3> wherein Hal is a halogen atom and converting the intermediate into a dye where necessary. In examples the preparation of anthraquinone, mono- and dis-azo, metallized azo and phthalocyanine dyes of the above formula containing as the radical Y a b -phenylsulphonyl-propionyl, b - chloropropionyl, b - (31 - carboxy) - phenylsulphonyl - propionyl, b - phenoxy - propionyl, b - methylsulphonyl - propionyl, dichlorotriazinyl, 2 - (21 - sulphophenylamino) - 4 - chlorotriazinyl, acryloyl b -chloroethylsulphonyl, phenoxycarbonyl or b -chlorocrotonyl residue.ALSO:1 - [21,41 - Dichloro - triazinyl - (61) -amino]-3-or -4-b -phenylsulphonyl-propionylamino)-benzene-6-sulphonic acid is prepared by condensing equimolar amounts of cyanuric chloride and 1 - amino - 3 - or - 4 - (b - phenylsulphonyl-propionylamino)-benzene-6-sulphonic acid.