Aminonaphthol bisazo reactive dyes
AssigneeBayer Aktiengesellschaft
InventorsKarl J. Herd, Martin Michna
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Abstract
The invention provides new reaction dyestuffs of the formula ##STR1## where n and m are each 0 or 1 such that n+m=1 or 2 and where G is a radical of the formula ##STR2## wherein B is a direct bond between D or D' and X or represents a bridge member as described in the specification, X is S, SO or SO.sub.2, Y is optionally substituted alkylene, R is H, optionally substituted C.sub.1 -C.sub.4 -alkyl or optionally substituted C.sub.2 -C.sub.4 -alkylene or optionally substituted phenylalkylene, Z is a fibre-reactive radical, and where D and D' are as defined in the body of the Application. On hydroxyl- or amide-containing textile materials the new reactive dyestuffs produce prints and dyeings of a high fastness level.
Claims5
A reactive dyestuff of the formula ##STR63## or their alkali metal salts, where G is a radical of the formula ##STR64## n and m are each 0 or 1 such that n+m=1 or 2, D and D' are each a benzene, naphthalene or heterocyclic radical or a benzene, naphthalene or heterocyclic radical substituted by an azo-containing radical,
- B is a direct bond between D or D' and X or a bridge member of the structure (2) to (5) ##STR65## each of which is bonded with the amine function to a C atom of the ring system of D or D' and with the free bond of the phenyl system to X,
- X is S, SO or SO.sub.2,
- Y is C.sub.1 -C.sub.6 -alkylene unsubstituted or substituted by --OH, --SO.sub.3 H, --COOH or -halogen,
- R is H, C.sub.1 -C.sub.4 -alkyl unsubstituted or substituted by --OH, --SO.sub.3 H, --COOH, -halogen or --OSO.sub.3 H,
- Z is a fibre-reactive radical,
- R' is H, C.sub.1 -C.sub.4 -alkyl which is unsubstituted or substituted by --OH or --COOH;
- or phenyl which is unsubstituted or substituted by --OH or --COOH,
- W is OH, Cl, F, Br, SO.sub.3 H, NHR' ##STR66## alkoxy, phenoxy and Q and Q', independently of each other, are each H, OH, halogen, SO.sub.3 H COOH, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy.
Dependencies are inferred from the claim text.