Fibre-reactive copper-complex formazan compounds which contain a difluoropyrimidinyl group
AssigneeSandoz Ltd.
InventorsMarkus Gisler, Roland Wald
Life of this patent
Estimating the term…
Abstract
Fibre-reactive formazan compounds, salts thereof or free acid forms thereof according to formula (I) ##STR1## in which R.sub.1 is hydrogen or --COOH, each of R.sub.2 and R.sub.4 is independently hydrogen, --COOH, --SO.sub.3 H, --NHCOCH.sub.3, --NHCOCHY.sub.2 --CH.sub.2 Y.sub.1, --NHCOCY.sub.2 .dbd.CH.sub.2 or --NHCOCH.sub.2 Y.sub.1, R.sub.3 is hydrogen, halogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, --COOH or --SO.sub.3 H, Y.sub.1 is chlorine, bromine, --OSO.sub.3 H or --SSO.sub.3 H, Y.sub.2 is hydrogen, chlorine or bromine, and Z is ##STR2## The compounds are particularly useful in dyeing or printing hydroxy-group containing or nitrogen-containing organic substrates, including leather, fiber materials, and textiles.
Claims8
A compound of formula I ##STR12## or a salt thereof, or a mixture of such compounds or salts, in which:
- R.sub.1 is hydrogen,
- R.sub.2 is --SO.sub.3 H in the 4 or 5 position,
- R.sub.3 is hydrogen,
- R.sub.4 is --NHCOCHY.sub.2 --CH.sub.2 Y.sub.1, or --NHCOCY.sub.2 .dbd.CH.sub.2,
- Y.sub.1 is chlorine, bromine, --OSO.sub.3 H or --SSO.sub.3 H,
- Y.sub.2 is hydrogen, chlorine or bromine.
Dependencies are inferred from the claim text.