Acid dye mixture

Abstract

The present invention refers to a red-dyeing acid dye mixture comprising a dye of the formula (I) ##STR00001##
and at least one dye of the formula (II) ##STR00002##
a process for its manufacturing and a process for dyeing and printing of natural or synthetic polyamide fiber material in which it used.

Claims

1. A dye mixture comprising a dye of the formula (I) ##STR00017## wherein M is hydrogen, an alkali metal, an ammonium ion or the equivalent of an alkaline earth metal, and at least one dye of the formula (IIa) or (IIb) ##STR00018## M is defined above, and at least one dye of the formula (IIIc), (IIId), (IIIe) or (IIIg) ##STR00019## wherein M is defined above.

2. The dye mixture according to claim 1, wherein M is hydrogen, sodium or potassium.

3. A process for the manufacturing of the dye mixture according to claim 1, which comprises mechanical mixing of the dye of the formula (I) and the dye or the dyes of the formula (IIa) or (IIb) and at a dye of the formula (IIIc), (IIId), (IIIe) or (IIIg).

4. A process for dyeing and printing of natural or synthetic polyamide fiber material which comprises applying said dye mixture according to claim 1 to said material.

5. A process for trichromatic dyeing and printing of natural or synthetic polyamide fiber material which comprises applying to said material said dye mixture according to claim 1 together with at least one blue-dyeing dye or dye mixture and at least one yellow- or orange-dyeing dye or dye mixture.

6. The process according to claim 5, wherein a dye selected from the group consisting of the dyes of formulae (IVa) to (IVh) ##STR00020## ##STR00021## wherein M .Iadd.is .Iaddend.hydrogen, an alkali metal, an ammonium ion or the equivalent of an alkaline earth metal, or mixtures of two or more dyes of the formulae (IVa) to (IVh) are used as yellow- or orange dyeing dye.

7. The process according to claim 6, wherein a mixture of a dye of the formula (IVa) and a dye of the formula (IVi) ##STR00022## wherein M is hydrogen, an alkali metal, an ammonium ion or the equivalent of an alkaline earth metal, is used as yellow or orange dyeing dye.

8. The dye mixture as claimed in claim 1, which further comprises at least one dye selected from the group consisting of the dyes of formulae (IVa) to (IVh) ##STR00023## ##STR00024## wherein M .Iadd.is .Iaddend.hydrogen, an alkali metal, an ammonium ion or the equivalent of an alkaline earth metal.

9. The dye mixture as claimed in claim 8, wherein at least one dye of the formula (IVb), (IVd), (IVe) or (IVf) is used and at least one of the dyes of the formula (IIId), (IIIe) or (IIIg) is used.

10. The dye mixture according to claim 1, consisting of the dye of the formula (I), the dye of the formulas (IIa) or (IIb) or the dye of formula (IIa) and (IIb) and at least one dye of the formula (IIIc), (IIId), (IIIe) or (IIIg) and optionally comprises at least one dye selected from the group consisting of the dyes of formulae (IVa) to (IVh) ##STR00025## ##STR00026## wherein M .Iadd.is .Iaddend.hydrogen, an alkali metal, an ammonium ion or the equivalent of an alkaline earth metal.

11. A dye mixture comprising a dye of the formula (I) ##STR00027## wherein M is hydrogen, an alkali metal, an ammonium ion or the equivalent of an alkaline earth metal, and at least one dye of the formula (IIa) or (IIb) ##STR00028## M is defined above, and at least one dye of the formula (IVb), (IVd), (IVe) or (IVf) ##STR00029## wherein M is defined above.

12. The dye mixture as claimed in .Iadd.claim .Iaddend.11, which further comprises at least one dye selected from the group consisting of the dyes of formulae (IIIb) to (IIIh) ##STR00030## ##STR00031## wherein M is hydrogen, an alkali metal, an ammonium ion or the equivalent of an alkaline earth metal.

13. The dye mixture as claimed in .Iadd.claim .Iaddend.12, wherein a dye of the formula (IIIc), (IIId).[...]..Iadd., .Iaddend.(IIIe) or (IIIg) .Iadd.is used.Iaddend..

14. The dye mixture according to claim 11, wherein M is hydrogen, sodium or potassium.

15. A process for the manufacturing of the dye mixture according to claim 11, which comprises mechanical mixing of the dye of the formula (I) and the dye or the dyes of the formula (IIa) or (IIb) and at least one dye of the formula (IVb), (IVd), (IVe) or (IVf).

16. A process for dyeing and printing of natural or synthetic polyamide fiber material which comprises applying said dye mixture according to claim 11 to said material.

17. A dye mixture consisting of a dye of the formula (I) ##STR00032## wherein M is hydrogen, an alkali metal, an ammonium ion or the equivalent of an alkaline earth metal, and at least one dye of the formula (IIa) or (IIb) ##STR00033## M is defined above, and only one dye selected from the group consisting of the dyes of formulae (IIIb) to (IIIh) ##STR00034## ##STR00035## and .[.optionally.]. at least one dye selected from the group consisting of the dyes of formulae (IVa) to (IVh) ##STR00036## ##STR00037## wherein M is defined above.

18. The dye mixture as claimed in claim 17, wherein the dye of the formula .[.dye of the formula.]. (IIIc), (IIId), (IIIe) or (IIIg) is used.

19. The dye mixture as claimed in claim 17, wherein the dye of the formula .[.dye of the formula.]. (IVb), (IVd), (IVe) or (IVf) is used.

20. A process for dyeing and printing of natural or synthetic polyamide fiber material which comprises applying said dye mixture according to claim 17 to said material.

.Iadd.21. A dye mixture consisting of a dye of the formula (I) ##STR00038## wherein M is hydrogen, an alkali metal, an ammonium ion or the equivalent of an alkaline earth metal, and at least one dye of the formula (IIa) ##STR00039## M is defined above, and only one dye selected from the group consisting of the dyes of formulae (IIIb) to (IIIh) ##STR00040## ##STR00041## and optionally at least one dye selected from the group consisting of the dyes of formulae (IVa) to (IVh) ##STR00042## ##STR00043## wherein M is defined above. .Iaddend.

.Iadd.22. The dye mixture as claimed in claim 21, wherein the dye of the formula (IIIc), (IIId), (IIIe) or (IIIg) is used. .Iaddend.

.Iadd.23. The dye mixture as claimed in claim 21, wherein the dye of the formula (IVb), (IVd), (IVe) or (IVf) is used. .Iaddend.

.Iadd.24. A process for dyeing and printing of natural or synthetic polyamide fiber material which comprises applying said dye mixture according to claim 21 to said material. .Iaddend.

Description

Example 1

(1) To prepare a dye mixture comprising a dye of the formula (I) and a dye of the formula (IIa), 60 parts of the dye of the formula (I) in form of its sodium salt and 40 parts of the dye of the formula (IIa) in form of its sodium salt are mixed homogeneously to give 100 parts of the dye mixture which hereafter is called mixture A.

Example 2

(2) To prepare a dye mixture comprising a dye of the formula (I) and a dye of the formula (IIm), 25 parts of the dye of the formula (I) in form of its sodium salt and 75 parts of the dye of the formula (IIm) in form of its sodium salt are mixed homogeneously to give 100 parts of the dye mixture which hereafter is called mixture B.

Example 3

(3) To prepare a dye mixture comprising a dye of the formula (I), a dye of the formula (IIa) and a dye of the formula (IIb), 50 parts of the dye of the formula (I) in form of its sodium salt, 40 parts of the dye of the formula (IIa) in form of its sodium salt and 10 parts of the dye of the formula (IIb) in form of its sodium salt are mixed homogeneously to give 100 parts of the dye mixture which hereafter is called mixture C.

Example 4

(4) 10 parts of a nylon-6,6 material (Helanca fabric) are dyed in 200 parts of an aqueous solution containing 2 g/l ammonium acetate and having a pH-value of 5 which has been adjusted with acetic acid. The dyes that are used are 0.10% of the red dyeing mixture A according to Example 1, 0.15% of a orange dyeing dyestuff mixture comprising equimolar amounts of the dye of the formula (IVa) and the dye of the formula (IVi) and 0.12% of the blue-dyeing dye of the formula (IIIb), the amounts given being based on the weight of the Helanca fabric. All dyes were used in form of their sodium salts.

(5) The dyeing time at a temperature of 60 to 90 C. is 30 to 90 minutes. After that, the dyed nylon-6,6 fabric is removed from the liquor, rinsed and dried as usual. This gives a piece of fabric completely levelly dyed in a brown shade having no material-related streaks whatever and high light fastness properties.

Examples 5 to 11

(6) Example 4 is repeated with the difference that the dyes and dye mixtures, respectively, and the amounts given in the following table were used. All dyeings obtained were completely level and with high light fastness properties.

(7) TABLE-US-00001 Example Dyes used Shade 5 0.035% of an equimolar mixture of the dyes light grey of formulae (IVa) and (IVi) 0.023% of Mixture A 0.063% of the dye of the formula (IIIb) 6 0.060% of an equimolar mixture of the dyes olive of formulae (IVa) and (IVi) 0.005% of Mixture A 0.075% of the dye of the formula (IIIb) 7 0.021% of an equimolar mixture of the dyes brown of formulae (IVa) and (IVi) 0.027% of Mixture A 0.020% of the dye of the formula (IIIb) 8 0.035% of an equimolar mixture of the dyes light grey of formulae (IVa) and (IVi) 0.023% of Mixture B 0.063% of the dye of the formula (IIIb) 9 0.021% of an equimolar mixture of the dyes brown of formulae (IVa) and (IVi) 0.027% of Mixture B 0.020% of the dye of the formula (IIIb) 10 0.035% of an equimolar mixture of the dyes light grey of formulae (IVa) and (IVi) 0.023% of Mixture C 0.063% of the dye of the formula (IIIb) 11 0.021% of an equimolar mixture of the dyes brown of formulae (IVa) and (IVi) 0.027% of Mixture C 0.020% of the dye of the formula (IIIb)