Dye combination

• US 20040128775A1
• Filed: 11/21/2003
• Published: 07/08/2004
• Est. Priority Date: 05/23/2001
• Status: Active Grant

• Current Assignee: Clariant Produkte Deutschland GmbH (Clariant AG)
• Original Assignee: Clariant Produkte Deutschland GmbH (Clariant AG)
• Inventors: Wuzik, Andreas, Geisenberger, Josef, Menzel, Heidemarie
• Granted Patent: US 7,060,124 B2
• Time in Patent Office: Days
• US Class Current: 8/583
• CPC Class Codes: C09B 67/0046 Mixtures of two or more azo dyes

Abstract

The invention relates to a dye mixture essentially consisting of one dye of formula (4) and a dye of formula (5). The black dye mixture is advantageously used for ink jet printing and provides high light-resisting and neutral black ink formulations.

Claims

1. ) A dye mixture consisting essentially of one or more dyes of the formula (4) and one or more dyes of the formula (5)

2. ) The dye mixture as claimed in claim 1, wherein

R² is hydrogen, SO₃M, methyl, ethyl, acetyl, phenyl, chlorophenyl, phenylsulfonic acid, morpholinyl or pyridinyl.

3. ) The dye mixture as claimed in claim 1, wherein

R³ and R⁴ are hydrogen, methyl, ethyl, hydroxymethyl, hydroxypropyl, acetyl, phenyl, chlorophenyl, phenylsulfonic acid, CH₂CH₂OM, CH₂CH₂SO₃M, CH₂COOH, CH₂CH₂COOM or CH₃CHCOOM.

4. ) The dye mixture as claimed in one or more of claims 1 to 3, wherein the dye of the formula (5) is a compound of the formula (5a)

5. ) The dye mixture as claimed in one or more of claims 1 to 3, wherein the proportion between the dyes of the formula (4) and (5), based on dry weights, is from 100:

1 to 1;

100, preferably from 10;

1 to 1;

10.

6. ) The dye mixture as claimed in one or more of claims 1 to 5, further comprising a shading colorant from the group consisting of C.I. Acid Yellow 17, 23, C.I. Direct Yellow 86, 98, 132, C.I. Reactive Yellow 37, C.I. Pigment Yellow 17, 74, 83, 97, 120, 139, 151, 155 and 180, C.I. Direct Red 1, 11, 37, 62, 75, 81, 87, 89, 95, 227;

C.I. Acid Red 1, 8, 87, 94, 115, 131, 144, 152, 154, 186, 245, 249, 289;

C.I. Reactive Red 21, 22, 23, 35, 63, 106, 107, 112, 113, 114, 126, 127, 128, 129, 130, 131, 137, 160, 161, 174, 180;

C.I. Pigment Red 122, 176, 184, 185, 269;

C.I. Acid Blue 9, C.I. Direct Blue 199, C.I. Pigment Violet 19, and C.I. Pigment Blue 15, 15;

3, 15;

4.

7. ) A process for preparing a dye mixture as claimed in at least one of claims 1 to 6, which comprises mixing the dyes of the formulae (4) and (5), and, where appropriate, the shading colorant with one another in the form of dry powders, their solutions, water-moist or solvent-moist presscakes and/or masterbatches.

8. ) The use of a dye mixture as claimed in at least one of claims 1 to 6 for dyeing and printing natural and synthetic fiber materials, for recording text and images on a recording medium, and for dyeing paper or pulp in the mass.

9. ) A recording liquid comprising a dye mixture as claimed in one or more of claims 1 to 6.

10. ) The recording liquid as claimed in claim 9, consisting essentially of from 0.1 to 50% by weight of the dye mixture, calculated as dry weight, from 0 to 99% by weight of water and from 0.5 to 99.5% by weight of organic solvent and/or humectants.

11. ) The use of the recording liquid as claimed in claim 9 or 10 as an inkjet ink.

12. ) An ink set consisting of in each case at least one magenta-colored recording liquid, a yellow recording liquid, a cyan-colored recording liquid, and a black recording liquid as claimed in claim 9 or 10.