Method for the preparation of gray-green pigments based on zirco

Details Method for the preparation of gray-green pigments based on zirco Method for the preparation of gray-green pigments based on zirco

1989-08-04

1991-06-04

Dixon, Jr., William R.

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

106400, 106401, 106461, 106479, 106481, C08K 322

Patent

active

050210920

ABSTRACT:
The preparation of gray-green unitary pigment bodies based on zirconium silicate-vanadium oxide wherein a mixture of zirconium oxide and silicon oxide in the presence of a vanadium and lithium compound is calcined above 600.degree. C. and wherein the amount of V.sub.2 O.sub.5 is more than 17 percent by weight and the amount of lithium compound added is such that the atom ratio Li/Li+V is from 0.1 to 0.5.

REFERENCES:
patent: 2441447 (1947-06-01), Seabright

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