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US 4,440,681 AGranted
Water-insoluble monoazo dyestuffs and their preparation
AssigneeCassella Aktiengesellschaft
InventorsHorst Tappe, Rudolf Lowenfeld, Uwe Kosubek, Maria Kallay
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Abstract
Water-insoluble azo dyestuffs, their manufacture and use, which have the formula ##STR1## wherein D is a substituted phenyl or heterocyclic moiety which are free from ionic substituents and R.sup.1 is methyl or ethyl.
Claims2
Water-insoluble azo dyestuffs of the formula ##STR18## wherein X is hydrogen, chloro, bromo, cyano or nitro and R.sup.1 is methyl or ethyl.
Dependencies are inferred from the claim text.