An ink composition contains a first dye represented by formula (I)

##STR00001##

and a second dye represented by formula (II).

##STR00002##

The present invention related to a method of dyeing using the salt mixture as an electrolyte with 0.5 to 5.00 GPL of sodium chloride or sodium sulphate and alkali agents I and II to exhaust and fix the dyestuff to the cellulose material in the reactive dyeing wherein the fiber is treated with (i) the salt mixture with sodium chloride or sodium sulphate specifically, putting the pre-treated fiber maintained with pH between 3 and above and an (MLR) maintained between 1:20 and 1:3 at a temperature between 20° C. and above and exhausted for between 15 minutes and above, (ii) the alkali agent I with a pH between 9.5 and above at a temperature between 30° C. and above and stained for between 20 minutes and above (iii) the alkali agent II with a pH between 10.5 and above at a temperature between 30° C. and above and stained for 40 minutes and above.

An ink composition contains a first dye represented by formula (I) ##STR00001##
and a second dye represented by formula (II) ##STR00002##

Dye mixtures comprising dyes of formula (I) and (II) process for the production thereof and use of said mixtures.

##STR00001##

The present invention relates to a method of dyeing using a salt mixture as an electrolyte with 0.5 to 5.00 GPL of sodium chloride or sodium sulphate and alkali agents I and II to exhaust and fix a dyestuff to a cellulose material in a reactive dyeing. In the method the cellulose fiber is treated with (i) the salt mixture with sodium chloride or sodium sulphate specifically, putting the pre-treated fiber maintained at a pH between 3 and above and an (MLR) maintained between 1:20 and 1:3 at a temperature between 20? C. and above and exhausted for between 15 minutes and above, (ii) the alkali agent I with a pH between 9.5 and above at a temperature between 30? C. and above and stained for between 20 minutes and above (iii) the alkali agent II with a pH between 10.5 and above at a temperature between 30? C. and above and stained for 40 minutes and above.

A dye mixture comprising at least one dye of formula

##STR00001##

and at least one dye from the group of formulae

##STR00002##

wherein
(R.sub.1).sub.k denotes k identical or different substituents from the group C.sub.1-C.sub.4alkoxy, C.sub.1-C.sub.4alkyl and sulfo,
R.sub.2 is hydrogen or C.sub.1-C.sub.4alkyl,
R.sub.3 is hydrogen or C.sub.1-C.sub.4alkyl,
(R.sub.4).sub.n denotes n identical or different substituents from the group C.sub.1-C.sub.4alkoxy, C.sub.1-C.sub.4alkyl and sulfo,
(R.sub.5).sub.q denotes q identical or different substituents from the group C.sub.1-C.sub.4alkoxy and C.sub.1-C.sub.4alkyl,
X.sub.1, X.sub.2 and X.sub.3 are each independently of the others halogen, 3-carboxypyridin-1-yl or 3-carbamoylpyridin-1-yl,
T.sub.1 is a fibre-reactive radical of formula

##STR00003##

wherein
(R.sub.6).sub.0-2 denotes from 0 to 2 identical or different substituents from the group C.sub.1-C.sub.4alkyl, C.sub.1-C.sub.4alkoxy and sulfo,
Me means methyl, and Et means ethyl,
Z, Z.sub.1, Z.sub.2 and Z.sub.3 are each independently of the others vinyl or a radical CH.sub.2CH.sub.2U and U is a group removable under alkaline conditions,
M is hydrogen, an alkali metal or one equivalent of an alkaline earth metal,
k, n and q are each independently of the others the number 0, 1 or 2, and
l, m and s are each independently of the others the number 1 or 2,
are suitable especially for the dyeing or printing of cellulosic fibre materials, exhibit good build-up, and yield dyeings and prints having good reproducibility and good all-round fastness properties.