Mixtures of reactive dyes and their use
View Patent ↗Dye mixtures comprising at least one dye of formula (I) together with at least one dye of formula (II) wherein the radicals are as defined in the claim, are suitable for dyeing or printing cellulosic fiber materials, while having a good build-up behavior, and yield dyeings of a deep shade having good fastness properties.
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 4 alkyl,
(R 3 ) 0-3 denotes from 0 to 3 identical or differing substituents from the group halogen, C 1 -C 4 alkyl, C 1 -C 4 alkoxy, carboxy and sulfo,
A is unsubstituted or substituted phenylene, naphthylene, or C 2 -C 8 alkylene which may be interrupted by oxygen,
X 1 is halogen or a non-fibre-reactive substituent,
q is the number 0 or 1,
Y 1 , Y 2 , Y 3 and Y 4 are each independently of the others 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 2 is halogen, T independently has the definition of X 2 , is a non-fibre-reactive substituent or is a fibre-reactive radical of formula
(R 6 ) 0-2 denotes from 0 to 2 identical or differing 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, and
(R 4 ) 0-2 and (R 5 ) 0-2 denote, each independently of the other, from 0 to 2 identical or differing substituents selected from the group C 1 -C 4 alkyl, C 1 -C 4 alkoxy and sulfo, and one of the fibre-reactive radicals Y 3 and Y 4 is a radical of formula (3a), (3b), (3e), (3d) or (3e) and the other of the fibre-reactive radicals Y 3 and Y 4 is a radical of formula (3b) or (3f).
2. A dye mixture according to claim 1 , wherein R 1 is hydrogen, methyl or ethyl and R 2 is hydrogen.
3. A dye mixture according to claim 1 , wherein X 1 is chlorine.
4. A dye mixture according to claim 1 , wherein -A-Y 1 is a radical of formula
wherein
(R 7 ) 0-2 denotes from 0 to 2 identical or differing substituents from the group halogen, C 1 -C 4 alkyl, C 1 -C 4 alkoxy and sulfo,
m is the number 2 or 3, and
Z 1 , Z 2 and Z 3 are each independently of the others vinyl, β-chloroethyl or β-sulfatoethyl.
5. A dye mixture according to claim 1 , wherein the dye of formula (1) is a dye of formula
wherein
R 1 is hydrogen, methyl or ethyl and
Z 1 is vinyl, β-chloroethyl or β-sulfatoethyl.
6. A method of dyeing or printing of hydroxyl-group-containing or nitrogen-containing fibre material, which comprises contacting said material with a tinctorially effective amount of a dye mixture according to claim 1 .
7. A method according to claim 6 , wherein cellulosic fibre material is dyed or printed.
8. An aqueous ink comprising a dye mixture according to claim 1 .
9. A method of printing of hydroxyl-group-containing or nitrogen-containing fibre material, which comprises printing said material with an aqueous ink according to claim 8 in an inkjet printer.
10. A method according to claim 6 , wherein cotton-containing fibre material is dyed or printed.