METHOD FOR PREPARING A TITANIC DIOXIDE PIGMENT SUBSTANTIALLY FREE OF SULPHATE WITH BETTER BRIGHTNESS AND / OR DURABILITY; AND TITANIC DIOXIDE PIGMENT SUBSTANTIALLY FREE OF SULPHATE WITH BETTER BRIGHTNESS AND / OR DURABILITY

摘要

"better gloss and / or durability titanium dioxide pigments". The present invention provides titanium dioxide pigments with improved gloss and / or durability. titanium dioxide pigments are manufactured by treating titanium dioxide with a plurality of metal salts under appropriate conditions to form the best gloss and / or durability titanium dioxide pigment where at least one metal salt is capable of providing is capable to provide a monovalent anion. Preferred pigments of the present invention are substantially sulfate free.