Reactive dye mixtures for dyeing bath with low salt content

摘要

Reactive dye mixtures contain NOTLESS 2 dyes,e.g. 5-(2,4-difluoro-pyrimidin-6-yl-amino)-2-arylazo-acetanilides and -phenylureas (I), and 1-amino-2-(vinylsulfonylphenylazo)-7-((vinylsulfonylphenylaminocarbony l)phenylazo)-8-naphthol-3,6-disulfonic acids (III salts or vinyl precursors of (II) and (III). Reactive dye mixtures contain NOTLESS 2 dyes such as 5-(2,4-difluoro-pyrimidin-6-yl-amino)-2-arylazo-acetanilides and -phenylureas (I), 1-(2-(trimethylammonium-phenylamino)-4-halo-1,3,5-triazin-6-yl-amino)- 7-(vinylsulfonylphenylazo)-8-naphthol-3,6-disulfonic acids (II) and 1-amino-2-(vinylsulfonylphenylazo)-7-((vinylsulfonylphenylaminocarbony l)phenylazo)-8-naphthol-3,6-disulfonic acid (III), including salts and vinyl precursors of (II) and (IIII), of the given formulae; D1 = a benzene or naphthalene ring with sulfo group(s); R1 = methyl or amino; D2-4 = a vinylsulfonylphenyl (precursor) group. An Independent claim is also included for the preparation of the mixture by mixing the desired weight fractions of the individual dyes mechanically.