Mixtures of reactive dyes and their use

1 . A dye mixture comprising at least one dye of formula

together with at least one dye of formula

wherein

R 1 and R 2 are each independently of the other hydrogen or unsubstituted or substituted C 1 -C 8 alkyl, (R 3 ) 0-3 and (R 4 ) 0-3 each independently of the other denote from 0 to 3 identical or different substituents from the group halogen, C 1 -C 4 alkyl, C 1 -C 4 alkoxy, carboxy and sulfo,

D 1 and D 2 are each independently of the other the radical of a diazo component of the benzene or naphthalene series,

r and s are each independently of the other the number 0 or 1, and the sum of r+s is the number 1 or 2,

Y 1 and Y 2 are each independently of the other a fibre-reactive radical of formula

—SO 2 -Z  (3a),

—NH—CO—(CH 2 ) m —SO 2 -Z  (3b),

—CONH—(CH 2 ) n —SO 2 -Z  (3c),

—NH—CO—CH(Hal)-CH 2 -Hal  (3d),

—NH—CO—C(Hal)═CH 2   (3e) or

wherein

X is halogen, T has independently the same definitions as X, or is a non-fibre-reactive substituent or a fibre-reactive radical of formula

(R 5 ) 0-2 denotes from 0 to 2 identical or different substituents from the group halogen, C 1 -C 4 -alkyl,

C 1 -C 4 alkoxy and sulfo,

Z is vinyl or a radical —CH 2 —CH 2 —U and U is a group removable under alkaline conditions,

Q is a group —CH(Hal)-CH 2 -Hal or —C(Hal)═CH 2 ,

m and n are each independently of the other the number 2, 3 or 4, and

Hal is halogen,

with at least one of the radicals Y 1 and Y 2 being a radical of formula (3f), and the dye of formula (2) not being a dye of formula

wherein

X* is fluorine and the β-sulfatoethylsulfonyl group is bonded in the 4-position, or

X* is chlorine and the β-sulfatoethylsulfonyl group is bonded in the 3-position.

2 . A dye mixture according to claim 1 , wherein D 1 and D 2 are each independently of the other a radical of formula

wherein

(R 6 ) 0-3 denotes from 0 to 3 identical or different substituents from the group halogen, C 1 -C 4 -alkyl, C 1 -C 4 alkoxy, carboxy, nitro and sulfo, and

Y 3 is a radical of formula (3a), (3b), (3c), (3d), (3e) or (3f) according to claim 1 .

3 . A dye mixture according to claim 1 , wherein

D 1 and D 2 are each independently of the other a radical of formula

wherein

(R 6a ) 0-2 denotes from 0 to 2 identical or different substituents from the group halogen, C 1 -C 4 -alkyl, C 1 -C 4 alkoxy and sulfo,

Y 3a is α,β-dibromopropionylamino or α-bromoacryloylamino,

m is the number 2 or 3,

n is the number 2 or 3, and

Z 1 , Z 2 , Z 3 and Z 4 are each independently of the others vinyl, β-chloroethyl or β-sulfatoethyl.

4 . A dye mixture according to claim 1 , wherein

R 1 and R 2 are hydrogen.

5 . A dye mixture according to claim 1 , wherein

R 1 and R 2 are hydrogen,

D 1 is a radical of formula

D 2 is a radical of formula

wherein

R 6a and R 6b are each independently of the other methyl or methoxy, and

Z 1a and Z 1b are each independently of the other vinyl, β-chloroethyl or β-sulfatoethyl.

6 . A dye mixture according to claim 1 , wherein

the dye of formula (2) is a dye of formula

wherein

(R 3 ) 0-2 and (R 4 ) 0-2 each independently of the other denote from 0 to 2 identical or different substituent selected from the group C 1 -C 4 alkyl, C 1 -C 4 alkoxy and sulfo, and

one of the fibre-reactive radicals Y 1 and Y 2 is a radical of formula (3a), (3b), (3c), (3d) or (3e), and the other of the fibre-reactive radicals Y 1 and Y 2 is a radical of formula (3f), the meanings according to claim 1 applying for the fibre-reactive radicals of formulae (3a), (3b), (3c), (3d), (3e) and (3f).

7 . A method of dyeing or printing of hydroxyl-group-containing or nitrogen-containing fibre materials, which comprises contacting said materials with a dye mixture according to claim 1 .

8 . A dye of formula

wherein

X is halogen, and

Z 5 and Z 4 are each independently of the other vinyl or a radical —CH 2 —CH 2 —U and U is a group removable under alkaline conditions.

9 . A method of dying or printing of hydroxyl-group-containing or nitrogen-containing fibre materials, which comprises contacting said materials with a dye of formula (2aa) according to claim 8 .

10 . An aqueous ink comprising a dye mixture according to claim 1 .

11 . An inkjet printing method for printing hydroxyl-group-containing or nitrogen-containing fibre materials, which comprises printing said materials with an aqueous ink according to claim 10 .

12 . An aqueous ink comprising a dye according to claim 8.