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US 4,150,230 AGranted
1,4-Diaminoanthraquinone derivatives containing a haloquinoxaline-6-carbonyl group
AssigneeSandoz Ltd.
InventorsRoland Mislin, Wolfgang Schoenauer, Karl U. Steiner
Life of this patent
Estimating the term…
Abstract
1,4-Diaminoanthraquinone derivatives containing a halopyrimidinyl or haloquinoxaline-6-carbonyl reactive group are useful as reactive dyestuffs for the dyeing or printing of leather and textile materials.
Claims7
A compound of formula ##STR46## in which R.sub.1 is a hydrogen atom or a sulpho group attached at the 5-, 6-, 7- or 8-position of the anthraquinone nucleus,
- each of R.sub.2 and R.sub.3 is a hydrogen atom or one is a hydrogen atom and the other is a methyl group,
- Z is a 2,3-dihaloquinoxaline-6-carbonyl group,
- and Ar is a 1,3- or 1,4-phenylene or a 1,5-naphthylene group, unsubstituted or substituted with one or two substituents selected from (C.sub.1-4) alkyl, (C.sub.1-4) alkoxy, sulpho and carboxyl groups and halogen atoms,
- with the provisos (i) that the group ##STR47## is not attached at an adjacent position on the phenylene or naphthylene nucleus to any sulpho substituent on that nucleus, and (ii) two sulpho or two carboxyl groups, or one sulpho and one carboxyl group cannot simultaneously be present on the phenylene nucleus,
- as a free acid or a water soluble salt thereof.
2 more elements
Dependencies are inferred from the claim text.