Stabilizing titanium dioxide pigments with vanadates

Details Stabilizing titanium dioxide pigments with vanadates Stabilizing titanium dioxide pigments with vanadates

1978-06-08

1979-12-18

Silverberg, Sam

Compositions: coating or plastic

Materials or ingredients

Miscellaneous

106308B, 106299, G04B 3102

Patent

active

041793064

ABSTRACT:
A process for the production of a light-stable and weather-stable titanium dioxide pigment comprising precipitating onto the pigment in aqueous suspension a colorless vanadate of at least one of zinc, magnesium, calcium, strontium and barium at a pH-value above 7 in about 0.01 to 5% by weight, expressed as V.sub.2 O.sub.5, based on TiO.sub.2. Advantageously the pigment either before or after precipitation of the vanadate is coated with at least one oxide, oxide hydrate or phosphate of titanium, silicon, aluminum or zirconium.

REFERENCES:
patent: 2062137 (1963-11-01), McKinney
patent: 2231455 (1941-02-01), Schaumann
patent: 3981737 (1976-09-01), Evilampi
patent: 4036662 (1977-07-01), Hund

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