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US 4,304,711 AGranted
Pigment compositions
AssigneeCiba-Geigy Corporation
InventorDerek S. H. Smith
Life of this patent
Estimating the term…
Abstract
A colored synthetic plastics mass having incorporated therein the calcium salt of the dyestuff from diazotized 2-nitroaniline-4-sulphonic acid and acetoacet-o-chloroanilide.
Claims2
A colored synthetic plastics mass formed by homopolymerization or copolymerization of monomers containing a vinyl or vinylidene group or a blend of such polymers having incorporated therein the calcium salt of the dyestuff from diazotized 2-nitroaniline-4-sulphonic acid and acetoacet---o--chloroanilide.
Dependencies are inferred from the claim text.