Liquid dyestuff compositions

A liquid dyestuff composition comprising from 4 to 50 wt % of a basic or cationic water soluble dyestuff, an organic or inorganic acid and 0.1 to 15.0 wt % of a phenolic derivative, the dyestuff having a solubility in water in the presence or absence of a phenolic derivative of at least 1 g/liter at a temperature of 25.degree. C. and the composition being made up to 100 wt % by water and optionally a water-miscible solvent and/or a dissolving auxiliary; a process of dyeing a substrate like paper with such composition; a powder or granulate form of such composition and the use of such a composition or powder or granulate thereof in a dyeing process.

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Claims

1. A liquid dyestuff composition comprising from 4 to 50 wt % of a basic or cationic water soluble dyestuff, an acid, wherein said acid excludes phenolic compounds and 0.1 to 15.0 wt % of a phenolic derivative, the dyestuff having a solubility in water in the presence or absence of a phenolic derivative of at least 1 g/liter at a temperature of 25.degree. C. and the composition being made up to 100 wt % by water and optionally a water-miscible solvent and/or a dissolving auxiliary.

2. Dyestuff composition as claimed in claim 1, wherein the phenolic derivative is chosen from the group consisting of resorcin, orcin, gallic acid, gallic acid ester, gallic acid amide; gallic acid N-alkyl amide; gallic acid N,N-dialkyl amide, hydroquinone, pyrogallol, pyrogallol ether, phloroglucin, 3,5-dihydroxybenzoic acid, 2,4-dihydroxy-benzoic acid.

3. Dyestuff composition as claimed in claim 2, wherein the phenolic derivative has an upper molecular weight of 300.

4. Dyestuff composition as claimed in claim 1, wherein the dyestuff is a cationic or direct basic dyestuff.

5. Dyestuff composition as claimed in claim 1, which further comprises a water-miscible solvent chosen from the group consisting of dimethylformamide, benzylalcohol, glycol, glycolether, formamide, pyrrolidone and N-alkyl pyrrolidone and/or a dissolving auxiliary chosen from the group consisting of urea, dextrine, maltose, lactose,.epsilon.-caprolactam.

6. Dyestuff composition as claimed in claim 1 wherein the acid is chosen from the group consisting of hydrochloric acid, sulfuric acid, phosphoric acid, formic acid, acetic acid, glycolic acid, gluconic acid, methanesulfonic acid, citric acid, succinic acid, glutamic acid, adipic acid, lactic acid and mandelic acid.

7. A powder or a granulate formed from an aqueous composition as claimed in claim 1.

8. A process of dyeing a substrate comprising applying a liquid composition as claimed in claim 1 to the substrate, application of the composition being by means of an exhaust- or pad-dyeing process or dyeing in the stock.

9. A process of dyeing a textile substrate comprising applying a dyebath obtained from a powder or a granulate as claimed in claim 7 to the substrate, application of the dyebath being by means of an exhaust- or pad-dyeing process.

10. A process of dyeing a paper substrate comprising applying a powder or granulate as claimed in claim 7 to the substrate, application of the powder or granulate being by dyeing in the stock.

Referenced Cited
U.S. Patent Documents
2863875 December 1958 Bienert et al.
4149851 April 17, 1979 Frei et al.
4273707 June 16, 1981 Pedrazzi
4842646 June 27, 1989 Gamblin
Foreign Patent Documents
2104538 March 1983 GBX
2134131 August 1984 GBX
2228980 December 1990 GBX
2283980 May 1995 GBX
Patent History
Patent number: 5944856
Type: Grant
Filed: Jan 13, 1998
Date of Patent: Aug 31, 1999
Assignee: Clariant Finanace (BVI) Limited (Tortola)
Inventor: Jurgen Geiwiz (Lorrach-Hauingen)
Primary Examiner: Yogendra Gupta
Assistant Examiner: Brian Mruk
Attorney: Scott E. Hanf
Application Number: 9/6,149
Classifications
Current U.S. Class: Carboxamides Or Thiocarboxamides (8/586); Basic Dye, Including Diphenylmethane, Triphenylmethane, Xanthene, Fluorene, Methine, Acridine, Oxazine, Phenazine, Flavylium, Naphthoperinone, Quinophthalone, Quaternary Ammonium Group, Etc., Containing (8/426); Dry Dye Composition Other Than Mere Mixture Of Two Or More Dyes Alone Or Process Of Making (8/524); Dye In Specified Form Other Than Mere Powder (8/526); Dye Concentrate Composition Wherein An Additional Amount Of A Constituent Of The Composition Must Be Added Before Use (8/527); Highly Viscous Dye Concentrate, E.g., Paste, Etc. (8/528); Ureas, Thioureas, Pseudoureas, Or Pseudothioureas (8/585); Sulfonic Acids Or Sulfonic Acid Esters (8/588); Ketone (8/607); Alcohol (8/611); Phenols (8/613); Inorganic Additive For Dye Composition, Dye Composition Containing Inorganic Additive, Process Or Product; Other Than Emulsifier, Ph Adjuster, Water, Nitrous Acid For Azo Coupling Or Sulfur Reducing Agent For Vat Or Sulfur Dye (8/618); Phosphorus (8/633); Halogen Acids (8/634); Basic Dye (8/644); Basic (cationic) Dye Containing Strongly Basic Onium Or Alkylene Imine Group (8/654); Heterocyclic Onium Group, E.g., Pyridinium, Etc. (8/655); 8/656; Basic Dye, Including Diphenylmethane, Triphenylmethane, Xanthene, Fluorene, Methine, Acridine, Oxazine, Phenazine, Flavylium, Naphthoperinone, Quinophthalone, Etc., Group-containing (8/657); Paper (8/919); Carboxylic Acid Or Salt Thereof (8/594)
International Classification: C09B 6700; C09B 4400; C09B 6702; C09B 4900;