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US 4,051,122 AGranted
Disazo pigments containing tetracarboxylic acid ester groups
AssigneeCiba-Geigy Corporation
InventorKarl Ronco
Life of this patent
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Abstract
Disazo pigments of the formula ##STR1## wherein R represents alkyl containing 1 to 6 carbon atoms, cyclohexyl or phenyl, and X and Y represent hydrogen, halogen, alkyl or alkoxy groups containing 1 to 4 carbon atoms which are useful for pigmenting high molecular organic material.
Claims7
Disazo pigment of the formula ##STR18## wherein R represents alkyl containing 1 to 6 carbon atoms, cyclohexyl or phenyl, and X and Y represent hydrogen, halogen, alkyl containing 1 to 4 carbon atoms or alkoxy containing 1 to 4 carbon atoms.
Dependencies are inferred from the claim text.