Back to results
US 4,055,559 AGranted
Disazo pigment containing at least 2 chlorine atoms and process for their manufacture
AssigneeCiba-Geigy Corporation
InventorsGeorg Cseh, Willy Mueller
Life of this patent
Estimating the term…
Abstract
A disazo pigment of the formula ##STR1## WHEREIN X and Y are hydrogen, chlorine, alkyl of 1 - 4 C-atoms or one of X and Y can be alkoxy of 1 - 4 C-atoms and Z is chlorine or methyl, which is useful for pigmenting high molecular organic material and shows excellent fastness to light and weather.
Claims4
A disazo pigment of the formula ##STR8## wherein X and Y are hydrogen, chlorine or methyl and one of X and Y may be methoxy.
Dependencies are inferred from the claim text.