Dye mixture, process for it's preparation and use thereof

• US 6,165,231 A
• Filed: 11/09/1999
• Issued: 12/26/2000
• Est. Priority Date: 11/11/1998
• Status: Expired due to Term

• Current Assignee: DyStar Colours Distribution GmbH (Zhejiang Longsheng Group Company Limited)
• Original Assignee: Dystar Textilfarben GmbH & Company Deutschland KG (Zhejiang Longsheng Group Company Limited)
• Inventors: Schumacher, Christian, Grobel, Bengt-Thomas, Schaffeld, Mieke, Krieger, Karl, Rohrig, Dierk
• Primary Examiner(s): EINSMANN, MARGARET V
• Application Number:
  US09/436,548
• Time in Patent Office: 413 Days
• Field of Search: 8/549, 8/641, 8/918
• US Class Current: 8/549
• CPC Class Codes: C09B 67/0052 Mixtures of two or more reactive monoazo dyes
• CPC Class Codes: Y10S 8/918 Cellulose textile

Abstract

Described are dye mixtures comprising dyes containing a coupling component comprising a 1-(chlorotriazinyl)amino-3,6-disulfo-8-naphthol radical, the dye or dyes of the one group of dyes containing an optionally loweralkyl-, loweralkoxy-, halogen, sulfo- and/or carboxy-substituted phenylamino or naphthylamino radical attached to the chlorotriazine radical and possessing a diazo component comprising an optionally loweralkyl-, loweralkoxy-, sulfo- and/or carboxy-substituted phenyl radical which is substituted by a fiber-reactive group of the vinyl sulfone series, and the dye or dyes of the other group of dyes containing attached to the chlorotriazine radical a phenylamino radical whose phenyl is substituted by a fiber-reactive group of the vinyl sulfone series and may be substituted by lower alkyl, lower alkoxy, sulfo and/or carboxy, and possessing a diazo component comprising a radical of benzene or naphthalene which may in each case be optionally substituted by lower alkyl, lower alkoxy, halogen, sulfo and/Qr carboxy. The dye mixtures are useful for preparing a dyeings and prints on hydroxy and/or carboxamido-containing fiber material, for example cotton and viscose fibers, and also wool and synthetic polyamide fiber materials and afford strong fast dyeings having a red hue.

Claims

1. A dye mixture comprising one or more dyes of the general formula (1) and one or more dyes of the general formula (2) in a molar ratio of the dyes (1) and (2) of 70:

30 to 30;

70 where;

M is hydrogen, an alkali metal or the equivalent of an alkaline earth metal;

R¹ is hydrogen, alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms, sulfo or carboxy;

R² is hydrogen, alkyl of 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms;

G is a radical of benzene or naphthalene;

R³ when G is a radical of benzene is hydrogen, alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms, halogen, sulfo or carboxy, and is hydrogen, methyl, sulfo or carboxy when G is a radical of naphthalene;

R⁴ when G is a radical of benzene is hydrogen, alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms or sulfo and is hydrogen or sulfo when G is a radical of naphthalene;

R^A is hydrogen or sulfo;

D is a radical of benzene or naphthalene;

R⁵ when D is a radical of benzene is hydrogen, alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms, halogen, sulfo or carboxy and is hydrogen, methyl, sulfo or carboxy, when D is a radical of naphthalene;

R⁶ when D is a radical of benzene is hydrogen, alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms or sulfo and is hydrogen or sulfo when D is a radical of naphthalene;

R^B is hydrogen or sulfo;

R⁷ is hydrogen, alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms, sulfo or carboxy;

R⁸ is hydrogen, alkyl of 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms;

R is hydrogen or alkyl of 1 to 4 carbon atoms;

Y¹ is vinyl or is ethyl which is substituted in the β

-position by an alkali-eliminable substituent;

Y² has any of the meanings of Y¹.

2. A dye mixture as claimed in claim 1, wherein R¹ is hydrogen, methyl or methoxy.

3. A dye mixture as claimed in claim 1, wherein R² is hydrogen, methyl or methoxy.

4. A dye mixture as claimed in claim 1, wherein R¹ and R² are both hydrogen.

5. A dye mixture as claimed in claim 1, wherein R⁷ is hydrogen, methyl or methoxy.

6. A dye mixture as claimed in claim 1, wherein R⁸ is hydrogen, methyl or methoxy.

7. A dye mixture as claimed in claim 1, wherein R⁷ and R⁸ are both hydrogen.

8. A dye mixture as claimed in claim 1, wherein R³ is hydrogen or sulfo, R⁴ is sulfo and R^A is hydrogen.

9. A dye mixture as claimed in claim 1, wherein R⁵ is hydrogen or sulfo, R⁶ is sulfo and R^B is hydrogen.

10. A dye mixture as claimed in claim 1, wherein Y¹ is vinyl or β

-sulfatoethyl.

11. A dye mixture as claimed in claim 1, wherein Y² is vinyl or β

-sulfatoethyl.

12. A dye mixture as claimed in claim 1, wherein the Y¹ --SO₂ -- group is attached to the benzene nucleus in a position meta or para to the azo group.

13. A dye mixture as claimed in claim 1, wherein the --SO₂ --Y² group is attached to the benzene nucleus in a position meta or para to the amino group.

14. A dye mixture as claimed in claim 1, wherein R is hydrogen.

15. A dye mixture as claimed in claim 1, wherein the dye or dyes of the general formula (1) and the dye or dyes of the general formula (2) are present in a molar ratio of 60:

40 to 40;

60.