Mixtures of reactive dyes and their use in a method of di- or trichromatic dyeing or printing

Abstract

A dye mixture, comprising at least one blue dyeing dye of the formula (1), wherein Q.sub.1 represents a bivalent radical of formula (4a), (4b) or (4c), wherein X.sub.1 denotes chlorine or fluorine, R.sub.1 is hydrogen or C.sub.1-C.sub.8 alkyl, R.sub.2 is hydrogen, C.sub.1-C.sub.8alkyl, C.sub.1-C.sub.4alkoxy or sulfo, Y.sub.1 is vinyl or a radical CH.sub.2CH.sub.2U and U is a leaving group removable under alkaline conditions, R.sub.3 is hydrogen or C.sub.1-C.sub.8alkyl that is unsubstituted or substituted by hydroxy, sulfo, sulfato, cyano, carboxy, C.sub.1-C.sub.4alkoxy or phenyl, r and s are each independently of the other the number 0 or 1, and t is the number 0, 1 or 2, and the sum of r, s and t is 2 or 3 and at least one yellow or red dyeing reactive dye is suitable especially for the dichromatic or trichromatic dyeing or printing of natural or synthetic polyamide fibre materials and yield dyeings or prints having good reproducibility and good all-round fastness properties. ##STR00001##

Claims

1. A dye mixture, comprising at least one blue dyeing dye of the formula: ##STR00055## and at least one yellow or red dyeing dye selected from the group consisting of the formulae: ##STR00056## wherein Q.sub.1, Q.sub.2 and Q.sub.3 represent each independently of the other a bivalent radical of formula ##STR00057## wherein X.sub.1 denotes chlorine or fluorine, R.sub.1 is hydrogen or a C.sub.1-C.sub.8 alkyl, R.sub.2 is hydrogen, a C.sub.1-C.sub.8 alkyl, C.sub.1-C.sub.4 alkoxy or sulfo, Y.sub.1 is vinyl or a radical CH.sub.2CH.sub.2U and U is a leaving group removable under alkaline conditions, R.sub.3 is hydrogen or a C.sub.1-C.sub.8 alkyl that is unsubstituted or substituted by hydroxy, sulfo, sulfato, cyano, carboxy, C.sub.1-C.sub.4 alkoxy or phenyl, R.sub.4 is hydrogen, a C.sub.1-C.sub.8 alkyl, C.sub.1-C.sub.4 alkoxy, C.sub.2-C.sub.4 alkanoylamino, ureido, halogen or sulfo, V.sub.1 is a radical of the formula: ##STR00058## wherein Z is vinyl or a radical CH.sub.2CH.sub.2U and U is a leaving group removable under alkaline conditions, X is a radical of formula ##STR00059## wherein Hal is a halogen, and D.sub.1 is a radical of the formula: ##STR00060## R.sub.5 and R.sub.6 are each independently of the other hydrogen or a C.sub.1-C.sub.8 alkyl that is unsubstituted or substituted by a hydroxy, sulfo, sulfato, cyano, carboxy, C.sub.1-C.sub.4 alkoxy or phenyl, D.sub.2 and D.sub.3 are each independently of the other a radical of a formula: ##STR00061## wherein R.sub.7 denotes identical or differing substituents from the halogen group, C.sub.1-C.sub.8alkyl, C.sub.1-C.sub.4 alkoxy and sulfo, q is the number 0, 1 or 2, Y.sub.2 is ,-dibromopropionylamino or -bromoacryloylamino, m is the number 2 or 3, n is the number 2 or 3, and Z.sub.1, Z.sub.2, Z.sub.3 and Z.sub.4 are each independently of the others vinyl, -chloroethyl or -sulfatoehyl, R.sub.8 is a hydroxyl or NR.sub.12R.sub.13, R.sub.9 and R.sub.10 are each independently of the other hydrogen or a C.sub.1-C.sub.8 alkyl that is unsubstituted or substituted by a hydroxy, sulfo, sulfato, cyano, carboxy, C.sub.1-C.sub.4 alkoxy or phenyl, R.sub.11 is hydrogen, a C.sub.1-C.sub.8 alkyl, C.sub.1-C.sub.4 alkoxy or sulfo, R.sub.12 and R.sub.13 are each independently of the other hydrogen or a C.sub.1-C.sub.8 alkyl that is unsubstituted or substituted by a hydroxy, sulfo, sulfato, cyano, carboxy, C.sub.1-C.sub.4 alkoxy or phenyl, V.sub.2 is SO.sub.2Y.sub.2 or a radical of the formula (5a), (5b), (5c), (5d), or (5e), Y.sub.2 is vinyl or a radical CH.sub.2CH.sub.2U and U is a leaving group removable under alkaline conditions, r and s are each independently of the other the number 0 or 1, and t is the number 0, 1 or 2, and the sum of r, s and t is 2 or 3.

2. A dye mixture according to claim 1, comprising at least one dye of the formula: ##STR00062## wherein R.sub.1, R.sub.2, X.sub.1 and Y.sub.1 are as defined in claim 1.

3. A dye mixture according to claim 1, comprising at least one dye of the formula: ##STR00063## in which R.sub.4a is hydrogen, a C.sub.1-C.sub.8 alkyl, C.sub.1-C.sub.4 alkoxy, C.sub.2-C.sub.4 alkanoylamino, ureido or halogen, and Z is as defined in claim 1.

4. A dye mixture according to claim 1, comprising at least one dye of formula (3a), wherein D.sub.2 and D.sub.3 are each a radical of formula (7e).

5. A dye mixture according to claim 1 comprising 20-80% by weight of a dye of formula (1) and 20-80% by weight of a dye of formula (2), (3a) or (3b).

6. A method for the dichromatic or trichromatic dyeing or printing of natural or synthetic polyamide fibre materials, which method comprises using at least one blue dyeing dye of formula (1) and at least one yellow or red dyeing dye selected from the group consisting of formulae (2), (3a) and (3b) as defined in claim 1.

7. A method for the dichromatic or trichromatic dyeing or printing of natural or synthetic polyamide fibre materials according to claim 6, wherein at least one dye of formula (1) is used together with at least one dye of formula (2) together with at least one dye of formula (3a).

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

Description

EXAMPLE 1

(1) 0.66 part of the blue-dyeing dye of formula (102), 0.66 part of the yellow-dyeing dye of formula (235) and 0.66 part of the red-dyeing dye of formula (304) are dissolved in 200 parts of water, and 10.0 part of sodium sulfate, 4.0 part of a levelling assistant (based on the condensation product of a higher aliphatic amine and ethylene oxide) and 0.4 part of sodium acetate are added. The pH is then brought to a value of 5.0 with 0.3 ml/l acetic acid (80%). The dyebath is heated at 40 C. for 10 minutes and 10 parts of a woollen fabric (pretreated for at least 30 min at 80 C. with 0.2 g/l Ultravon GPN extra, a commercial wetting agent supplied by Huntsman, liquor ratio 1:40, and subsequently spun) are then added. The bath is heated to a temperature of 100 C. in the course of about 50 minutes and dyeing is carried out at this temperature for 60 minutes. Thereafter, the bath is allowed to cool to 50 C. and the dyed goods are removed. The woollen fabric is washed with hot and cold water and then centrifuged and dried. A brown dyeing is obtained which has good light and wet fastness properties and good levelness.

EXAMPLE 2

(2) 5 g of tippy wool are pretreated with 1.0 g/l Ultravon GPN extra (commercial wetting agent supplied by Huntsman) at 70 C. for 20 min, liquor ratio 1:40. The flocks are washed with warm water, cold water, deionized water and centrifuged.

(3) 0.33 part of the blue-dyeing dye of formula (102), 0.33 part of the yellow-dyeing dye of formula (235) and 0.33 part of the blue-dyeing dye of formula (304) are dissolved in 200 parts of water, and 10.0 part of sodium sulfate, 2.0 part of a levelling assistant (based on the condensation product of a higher aliphatic amine and ethylene oxide) and 0.4 part of sodium acetate are added. The pH is then brought to a value of 5.5 with 0.1 ml/l acetic acid (80%). The dyebath is heated at 40 C. for 10 minutes and 5 parts of tippy wool are then added. The bath is heated to a temperature of 100 C. in the course of about 50 minutes and dyeing is carried out at this temperature for 60 minutes. Thereafter, the bath is allowed to cool to 50 C. and the dyed goods are removed. The wool is washed with hot and cold water and then centrifuged and dried. A brown dyeing is obtained which has good light and wet fastness properties and good levelness.