Coating of titanium dioxide pigments with oxi-des and/or phosphates of titanium, zirconium, aluminum and silicon is achieved by 1) adding zirconium as an alkaline zirconium carbonate complex of alkali metals or ammonium to an aqueous alkaline pigment suspension, and 2) slowly precipitating by adding dissolved compounds of titanium and/or aluminum and/or silicon and/or phosphorus. Resistance to UV light is improved, chalking is reduced and gloss retained. -- AATA