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US 5,352,247 AGranted
Anthraquinone dyes, their preparation and their use
AssigneeCiba-Geigy Corporation
InventorJean-Marie Adam
Life of this patent
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Abstract
Anthraquinone dyes of the formula ##STR1## in which A, R.sub.1, R.sub.2, R.sub.3 and n are as defined in claim 1, produce dyeings having good fastness properties on nitrogen-containing or hydroxyl-containing fibre materials.
Claims15
An anthraquinone dye of the formula ##STR38## in which R.sub.1 is substituted or unsubstituted C.sub.5 -C.sub.8 cycloalkyl or a radical of the formula ##STR39## R' and R", independently of one another, being a C.sub.1 -C.sub.4 alkyl radical,
- R.sub.2 is hydrogen or C.sub.1 -C.sub.4 alkyl,
- R.sub.3 is unsubstituted or halogen-substituted C.sub.1 -C.sub.4 alkyl or C.sub.2 -C.sub.4 alkenyl, or is substituted or unsubstituted phenyl, or in which the radical of the formula ##STR40## is a radical of the formula ##STR41## which is unsubstituted or substituted on the phenyl ring, A is an aromatic bridging member, and
- n is 1, 2 or 3,
- the sulfo group in the dye of the formula (1) being attached to the position designated as 6 or 7.
1 more element
Dependencies are inferred from the claim text.