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US 4,017,478 AGranted
Water-soluble azo dyes having a 2-acetoacetamidofluorenyl coupling component radical
AssigneeSandoz Ltd.
InventorJacky Dore
Life of this patent
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Abstract
Dyes of the formula ##STR1## wherein D is a carbocyclic aryl or heterocyclic aryl diazo component radical, q is 0 to 3, and t is 0, 1 or 2, With the proviso that q + t is 1 to 5, are highly The dyeing, padding and printing of textile fibers and textiles of natural or regenerated cellulose and paper. The dyes build-up well, exhibit good fastness to wet treatments, alcohol, light, rubbing and dry cleaning and are resistant to acids and alkalis.
Claims10
A compound of the formula or a mixture thereof,
- wherein
- D' is ##STR25## wherein R.sub.2 is hydrogen or sulfo,
- R.sub.3 is hydrogen, lower alkyl or sulfo,
- R.sub.4 is hydrogen, lower alkyl or sulfo,
- R.sub.8 is hydrogen, lower alkyl, lower alkoxy, carboxy or sulfo,
- R.sub.9 is hydrogen, lower alkyl, lower alkoxy, carboxy or sulfo, with the proviso that when R.sub.8 and R.sub.9 are sulfo or carboxy they are in the 2,2'- or 3,3'-positions,
- R.sub.10 is 1-phenyl-3-methylpyrazol-5-one-4-yl or 1-(3'-sulfophenyl)-3-methylpyrazol-5-one-4-yl,
- R.sub.11 is hydroxy, carboxy or lower alkoxy,
- R.sub.12 is hydroxy, carboxy or lower alkoxy,
- Y is --CH=CH--, --NH--CO--, --CO--NH-- or --NH--CO--NH--,
- s is 0 or 1, and
- t is 0, 1 or 2, with the proviso that the molecule contains 1 to 5 sulfo groups.
9 more elements
Dependencies are inferred from the claim text.