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US 10,190,255 B2Granted
Mixtures of fiber-reactive azo dyes, their preparation and their use
AssigneeDyStar Colours Distribution GmbH
InventorsClemens Grund, Adrian Murgatroyd, Ulrich Hanxleden, Manfred Hoppe, Ulrich Weingarten, Ronald Pedemonte, Antonio Lopez-Torrentera
Life of this patent
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Abstract
The present invention relates to dye mixtures comprising one or more dye(s) of: formula (I) and one or more dye(s) of: formula (II) and/or formula (III) and optionally one or more dye(s) of: formula (IV) to processes for their preparation and to their use for dyeing and printing hydroxyl- and carboxamido-containing materials.
Claims8
A dye mixture comprising
- one or more dye(s) of formula (I)
- and
- one or more dye(s) of formula (II) and/or formula (III)
- and optionally
- one or more dye(s) of:
- formula (IV)
- wherein D1 and D2 independent of one another is group of formula (1)
- wherein
- R1 and R2 independent of one another is hydrogen, (C1-C4)-alkyl, (C1-C4)-alkoxy, sulfo, carboxyl, amido or ureido,
- X1 is hydrogen or —SO2—CH═CH2,
- D3 and D4 independent of one another is a group of formula (1)
- wherein
- R1 and R2 independent of one another is hydrogen, (C1-C4)-alkyl, (C1-C4)-alkoxy, sulfo, carboxyl, amido or ureido,
- X1 is hydrogen or a group of the formula:
- —SO2—Z, wherein
- Z is hydroxyl, —CH═CH2 or —CH2CH2Z1, wherein
- Z1 is hydroxyl or a group which can be eliminated under the action of alkali,
- R200 and R201 independent of one another is
- i) hydrogen,
- ii) C1-C6-alkyl, which is linear or branched and is unsubstituted or substituted by amino, (C1-C4)-alkylamino, hydroxyl, (C1-C4)-alkoxy, sulfo, halogen, carboxyl, acetamido or ureido;
- iii) phenyl which is unsubstituted or substituted by (C1-C4)-alkyl, (C1-C4)-alkoxy, sulfo, halogen, carboxyl, acetamido or ureido;
- (iv) amino, (C1-C4)-alkylamino, hydroxyl, (C1-C4)-alkoxy, sulfo, carboxyl, cyano, halogen, nitro, amido or ureido,
- R* and R** independent of one another is hydrogen, (C1-C4)-alkyl, CO-(C1-C4-alkyl) or —CH2—SO3M,
- M is hydrogen, an alkali metal or one equivalent of an alkaline earth metal
- and wherein the sum of weights of all dyes of formula (I) that are present in the dye mixture is at least 40% of the weight of the dye mixture —calculated on the basis of the sum of weights of all dyes according to formulae (I), (II), (III) and (IV) that are present in the dye mixture.
22 more elements
Dependencies are inferred from the claim text.