Process for the production of titanium dioxide pigments with...

Details Process for the production of titanium dioxide pigments with... Process for the production of titanium dioxide pigments with...

C - Chemistry, Metallurgy

09

C

6/207

C09C 1/36 (2006.01)

Patent

CA 1128256

ABSTRACT OF THE DISCLOSURE The production of titanium dioxide pigments with improved chalking resistance and gloss retention by coating with an oxide and/or phosphate of zirconium and of titanium, aluminum and/or silicon, the improvement which comprises coating with zirconium by adding to an aqueous alkaline suspension of the titanium dioxide pigment an alkali metal or ammonium zirconium carbonate complex and slowly precipitating the zirconium by adding a dissolved compound of at least one of titanium, aluminum, silicon and phosphorus.

333700

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