Disazo reactive dyestuffs
AssigneeBayer Aktiengesellschaft
InventorKlaus Kunde
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Abstract
Reactive dyestuffs, a process for their preparation and their use and novel intermediates and a process for their preparation. Reactive dyestuffs of the formula (I) ##STR1## are described, in which A denotes a radical of the formula ##STR2## B denotes a bridging member, and R.sub.1, R.sub.2, R.sub.3, R.sub.4 and X have the meanings given in the description.
Claims9
A reactive dyestuff which in the form of the free acid has the formula ##STR139## in which the radical ##STR140## is attached to the 6 or 7 position of the naphthalene system, in which A denotes a radical of the formula ##STR141## B denotes straight-chain or branched C.sub.2 -C.sub.6 -alkylene, C.sub.5 -C.sub.6 -cycloalkylene, a radical of the formula --C.sub.2 H.sub.4 --O--C.sub.2 H.sub.4 -- or a radical of the formula ##STR142## in which the group ##STR143## is attached to the 3 or 4 position of the ring via the bond labelled with *, and
- R.sub.5 represents H or SO.sub.3 H,
- R.sub.1 and R.sub.2, independently of one another, denote H, substituted or unsubstituted C.sub.1 -C.sub.3 -alkyl, or substituted or unsubstituted phenyl, or
- B, R.sub.1 and R.sub.2 together with the two nitrogen atoms form a substituted or unsubstituted piperazine,
- R.sub.3 denotes H, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or SO.sub.3 H,
- R.sub.4 denotes H, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, NHCOCH.sub.3, NHCONH.sub.2 or NHCOCH.sub.2 OH, and
- X denotes a reactive system from the series consisting of 2,3-dichloroquinoxalines, pyrimidines or triazines.
A reactive dyestuff wherein in the form of its free acid it has the formula ##STR150## in which the radical ##STR151## is attached to the 6 or 7 position of the naphthalene system, in which A denotes a radical of the formula ##STR152## B denotes a radical of the formula ##STR153## the group ##STR154## being linked via the bond labelled with *, R.sub.1 and R.sub.2, independently of one another, denote H, substituted or unsubstituted C.sub.1 -C.sub.3 -alkyl, or substituted or unsubstituted phenyl,
- R.sub.3 denotes H, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or SO.sub.3 H,
- R.sub.4 denotes H, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, NHCOCH.sub.3, NHCONH.sub.2 or NHCOCH.sub.2 OH, and
- X denotes a radical of the general formula ##STR155## in which E.sub.1 represents H or F,
- E.sub.2 represents H, Cl or CN,
- E.sub.3 represents F or CH.sub.3,
- E.sub.4, E.sub.5 represents F or Cl,
- T, T.sub.1 denote H, substituted or unsubstituted C.sub.1 -C.sub.4 -alkyl, or substituted or unsubstituted phenyl,
- T.sub.2 denotes H, substituted or unsubstituted C.sub.1 -C.sub.4 -alkyl,
- T.sub.3 denotes H, substituted or unsubstituted C.sub.1 -C.sub.4 -alkyl, or phenyl which is unsubstituted or substituted by sulfo,
- T.sub.4 denotes H, or substituted or unsubstituted C.sub.1 -C.sub.4 -alkyl,
- D denotes a radical of the formula --(CH.sub.2).sub.1-6 -- or --C.sub.2 H.sub.4 --O--C.sub.2 H.sub.4 --,
- Y denotes a radical of the formulae (Va) or (Vb),
- Z denotes --CH.dbd.CH.sub.2 or a group which can be converted into vinylsulphonyl under alkaline conditions.
Dependencies are inferred from the claim text.