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US 6,900,294 B2Granted
Reactive azo dyes preparation thereof and use thereof
AssigneeDyStar Textilfarben GmbH & Co. Deutschland KG
InventorsStefan Meier, Werner Russ, Jörg Wörner
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Abstract
The present invention relates to reactive dyes of the general formula (1) where Y is a heterocyclic reactive group of the general formula (2) or (3) where X1 to X5 are each as defined in claim 1, their preparation and their use for dyeing and printing hydroxyl- and/or carboxamido-containing materials.
Claims13
A reactive dye of the formula (1)
- wherein
- Y is a heterocyclic reactive group of the formula (2) or (3)
- wherein
- X1 to X3 are independently hydrogen, cyano or halogen, with the proviso that at least one
- of X1 to X3 is halogen,
- X4 is fluorine or X5,
- Xs is a group of the general formula (4)
- wherein
- R1 is hydrogen, alkyl or aryl;
- B is alkylene, arylene or arylalkylene, and B alkylene is optionally interrupt by an oxygen atom;
- and
- R2 is an SO2CH2CH2Z or SO2CH═CH2 radical, wherein Z is an alkali-eliminable moiety;
- n is 0 or 1;
- and
- M is hydrogen, ammonium, an alkali metal or the equivalent of an alkaline earth metal.
12 more elements
A process for preparing the reactive dye as claimed in claim 1, which comprises constructing said dye by reacting the compounds of the formulae (6), (7) and (2′) or (6), (7), (4′) and trifluorotriazine
- wherein M, n, R1, R2, B, X1,X2, X3 are each as defined in claim 11 and X0 is fluorine or chlorine, in any order in diazotization, coupling and condensation reactions.
Dependencies are inferred from the claim text.