Reactive dyes, their preparation and use
AssigneeCiba Specialty Chemicals Corporation
InventorsAthanassios Tzikas, Herbert Klier
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Abstract
A description is given of reactive dyes of formula ##STR1## wherein R.sub.1 and R.sub.2 are each independently of the other hydrogen, sulfo, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or halogen, X is fluoro or chloro, and Y is a --CHT--CH.sub.2 T or --CT.dbd.CH.sub.2 group, and T is bromo or chloro. The reactive dyes of formula (1) are particularly suitable for dyeing or printing cellulosic fiber materials.
Claims13
A reactive dye of formula ##STR11## wherein R.sub.1 and R.sub.2 are each independently of the other hydrogen, sulfo, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or halogen,
- X is fluoro or chloro, and
- Y is a --CHT--CH.sub.2 T or --CT.dbd.CH.sub.2 group, and T is bromo or chloro.
A concentrated aqueous formulation which comprises 5 to 50% by weight of at least one reactive dye of formula ##STR16## wherein R.sub.1 and R.sub.2 are each independently of the other hydrogen, sulfo, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or halogen,
- X is fluoro or chloro, and
- Y is a --CHT--CH.sub.2 T or --CT.dbd.CH.sub.2 group, and T is bromo or chloro.
Dependencies are inferred from the claim text.