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US 6,368,362 B1Granted
Reactive dye mixtures for low-salt dyeing
AssigneeDyStar Textilfarben GmbH & Co. Deutschland KG
InventorsRonald Pedemonte, Uwe Reiher, Christina Schumacher, Martin Kunz, Joachim Eichhorn
Life of this patent
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Abstract
The present invention relates to mixtures of reactive dyes comprising at least two dyes selected from the group consisting of the general formulae (1), (2) and (3) where D1, D2, D3, R1, R2, Hal and M are each as defined in claim 1, processes for their preparation and their use for dyeing and printing hydroxyl- and/or carboxamido-containing materials.
Claims20
A mixture of reactive dyes which comprises at least two dyes selected from the group consisting of the general formulae (1), (2) and (3)
- where
- D1 is a benzene or naphthalene ring containing one or more sulfonic acid groups;
- R1 is methyl or amino;
- R2 is hydrogen or chlorine;
- Hal is fluorine or chlorine;
- M is hydrogen or an alkali metal;
- D2 to D4 are each a group of the general formula (D)
- where
- R3 and R4 are independently hydrogen, methyl, ethyl, methoxy, ethoxy, sulfo or carboxyl, and
- Z is —CH═CH2 or —CH2CH2Z1, where Z1 is an alkali-detachable group.
7 more elements
Dependencies are inferred from the claim text.