Claims
- 1. A storage-stable solid or liquid dye preparation consisting essentially of at least 10% of at least one dye, insoluble or difficultly soluble in water; an anionic or nonionic dispersing agent; at least one colorless metal complex which is stable in said preparation but unstable and capable of splitting under dyeing conditions at a pH of 3 to 6 and consisting of an alkaline earth metal or trivalent metal cation and at least one polydentate complexing agent; alone or in the presence of further biological stabilizing, humectant or thickening additives, water, organic water-miscible solvents or mixtures thereof, said colorless metal complex being present in said solid preparation in an amount of 1 to 60% by weight and in said liquid preparation in an amount of 0.1 to 20% by weight relative to the total preparation.
- 2. A dye preparation according to claim 1, wherein the metal complex is soluble in water.
- 3. A dye preparation according to claim 1, which contains a metal complex consisting of an alkaline-earth metal ion, and a complexing agent.
- 4. A dye preparation according to claim 3, which contains a metal complex having a calcium or magnesium ion.
- 5. A dye preparation according to claim 1, which contains a metal complex consisting of an aluminium ion, and a complexing agent.
- 6. A dye preparation according to claim 1, which contains a metal complex of which the complexing agent is nitrilotriacetic acid, ethylenediaminetetraacetic acid, glycine or citric acid.
- 7. A dye preparation according to claim 1, which contains as metal complex the calcium or magnesium complex of nitrilotriacetic acid, ethylenediaminetetraacetic acid or citric acid.
- 8. A dye preparation according to claim 7, which contains, as dyes insoluble or difficultly soluble in water, vat dyes, sulphur dyes, disperse dyes or mixture thereof.
- 9. A liquid dye preparation according to claim 1, which contains water or water-soluble organic solvent, or a mixture of water and water-soluble organic solvent.
- 10. A liquid dye preparation according to claim 1, which contains, as further additives, humectants, bactericides or fungicides.
- 11. A liquid dye preparation according to claim 1, which contains 10 to 50 percent by weight of dye, 1 to 30 percent by weight of an anionic dispersing agent, 0.1 to 20 percent by weight of a metal complex, 0.1 to 40 percent by weight of further additives, and the rest water.
- 12. A liquid dye preparation according to claim 1, which contains 20 to 30 percent by weight of dye, 1 to 10 percent by weight of an anionic dispersing agent, 1 to 10 percent by weight of a metal complex, 10 to 20 percent by weight of humectant, optionally 0.1 to 5 percent by weight of biological stabilising agent, and the rest water.
- 13. A solid dye preparation according to claim 1, which contains 10 to 90 percent by weight of dye, 1 to 80 percent by weight of an anionic dispersing agent and 1 to 60 percent by weight of a metal complex.
- 14. A solid dye preparation according to claim 13, which contains 20 to 50 percent by weight of dye, 30 to 60 percent by weight of an anionic dispersing agent and 20 to 50 percent by weight of a metal complex.
- 15. In a process for dyeing textile material containing polyester or cellulose fibers or mixtures thereof by the application of an aqueous dye-padding liquor containing at least 10% of at least one dye which is insoluble or difficultly soluble in water, an anionic or nonionic dispersing agent, in the presence or absence of further biological stabilizing, humectant or thickening additives, or mixtures thereof, to the textile material, the improvement wherein said padding liquor contains 0.2 to 20 grams per liter of at least one colorless metal complex, of a polyvalent cation and at least one polydentate complexing agent, capable of splitting under a low pH dyeing condition, and adjusting the pH to a value of 3 to 6 to obtain said low pH dyeing condition and control dye migration.
- 16. A process according to claim 15, wherein said padding liquor contains 1 to 5 grams per liter of said metal complex.
- 17. A process according to claim 15, wherein said metal complex is prepared in situ by the addition of said complexing agent and a polyvalent metal salt to said dye-padding liquor.
- 18. A process according to claim 15 which is a continuous process.
- 19. A process according to claim 15, wherein said polyvalent cation is an alkaline earth metal cation.
Priority Claims (1)
Number |
Date |
Country |
Kind |
4809/77 |
Apr 1977 |
CHX |
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Parent Case Info
This is a continuation of application Ser. No. 896,108 filed on Apr. 13, 1978 now abandoned.
US Referenced Citations (13)
Foreign Referenced Citations (4)
Number |
Date |
Country |
40-4312923 |
Sep 1965 |
JPX |
847059 |
Sep 1960 |
GBX |
966488 |
Aug 1964 |
GBX |
1290602 |
Sep 1972 |
GBX |
Non-Patent Literature Citations (3)
Entry |
Gard, A., J. Amer. Dyestuff Reporter Dec. 21, 1953 p. 867. |
Leffingwell, G., Silk Journal & Rayon World for April 1944 pp. 30-33. |
Roy, A. P., Amer. Dyestuff Reporter 12/8/52 pp. 844-845. |
Continuations (1)
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Number |
Date |
Country |
Parent |
896108 |
Apr 1978 |
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