TITANIUM DIOXIDE PARTICLES WITH ADHERING DISCRETE INORGANIC PARTICLES

摘要

The present invention relates to TiO2 pigments having TiO2 particles with substantially discrete inorganic particles dispersed on the surfaces of the TiO2 particles. Suitable inorganic particles include silica, calcium carbonate, and mixtures thereof. The substantially discrete inorganic particles have an average diameter size within the range of about 5 to about 50 nm and are dispersed on the surfaces of the TiO2 particles in an amount of less than 20 wt.% based on total pigment weight. This invention also includes coating compositions containing these pigments and processes for making these pigments.