Disperse dyestuffs
AssigneeCiba-Geigy Corporation
InventorsSiegfried Dengler, Peter Loew, Christian Zickendraht, Hansrudolf Schwander
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Abstract
Dyestuffs of the formula (I) ##STR1## wherein F represents a ring system with at least 3 rings which are angularly condensed with one another, n is 1, 2 or 3, and R, R.sub.1 and R.sub.2 represent optionally substituted alkyl groups which can be interrupted by heteroatoms and also represent cycloalkyl, aralkyl, aryl or heterocyclic radicals, R and R.sub.1 can also represent hydrogen atoms, R.sub.1 and R.sub.2, together with the nitrogen atom, are able to form a ring with 5 or 6 members, and R and R.sub.2 can combine to form a nitrogen-containing heterocycle.
Claims2
2-Cyano-3-amino-benzanthrones of the formula ##STR336## wherein R.sub.4 represents a halogen atom, a lower alkyl group or a hydrogen atom.
2-Cyano-3-amino-benzanthrone.
Dependencies are inferred from the claim text.