Disazo pigments containing acylamino groups
AssigneeCiba-Geigy Corporation
InventorsGeorg Cseh, Stefan Hari
Life of this patent
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Abstract
Disazo pigments of the formula ##STR1## wherein A denotes a phenylene or naphthylene radical, R denotes an aryl, alkyl or alkenyl group optionally substituted by halogen atoms, by hydroxyl, alkoxy or alkylmercapto groups containing 1-6 C atoms, by alkoxycarbonyl groups containing 2-6 C atoms or cyano, aryl, aryloxy, arylmercapto or heterocyclic radicals, or denotes a heterocyclic radical, and the X and Y denote H atoms or substituents which do not confer solubility in water are useful for coloring plastics lacquers and printing inks in yellow to orange shade of good fastness properties.
Claims6
A disazo pigment of the formula ##STR10## wherein A denotes a group of the formula ##STR11## wherein X.sub.1 and Y.sub.1 denote hydrogen, halogen, alkyl containing 1 to 4 carbon atoms, alkoxy containing 1 to 4 carbon atoms, phenoxy, trifluoromethyl, nitro, cyano, or alkoxycarbonyl containing 2 to 5 carbon atoms, or naphthylene;
- X denotes hydrogen, alkyl containing 1 to 4 carbon atoms, alkoxy containing 1 to 4 carbon atoms, nitro, cyano, alkoxycarbonyl containing 2 to 5 carbon atoms, or alkanoylamino containing 2 to 5 carbon atoms;
- Y denotes hydrogen, halogen, alkyl containing 1 to 4 carbon atoms, or alkoxy containing 1 to 4 carbon atoms;
- and R denotes alkyl containing 1 to 6 carbon atoms.
Dependencies are inferred from the claim text.