PIGMENTS OF SUBSTANTIALLY TERNARY SYSTEM HAVING OXIDES OF COLUMBIUM AND TRANSITIONAL ELEMENTS

摘要

1450252 Rutile-type pigment FERRO CORP 8 Jan 1974 [5 April 1973] 890/74 Heading C3P [Also in Division C4] A plastics article contains a pigment consisting of a rutile-type supporting lattice and from 10 to 25% by weight of colour-inducing metal oxides within the lattices which oxides consist essentially of an oxide of columbium and an oxide of a transition metal which is nickel, chromium, cobalt, magnanese or vanadium or a mixture of two or more thereof, the oxides of columbium and the transition metal being present in the molar ratio of from 0À2 : 1 to 5 : 1. In Examples 22 and 23 pigmented chips of clear polystyrene are moulded.