DISPERSION OF PARTICULATE TITANIUM DIOXIDE IN SILICONE

摘要

An attempt at blending a silicone-base cosmetic material with particulate titanium dioxide for imparting ultraviolet-screening properties to the material causes the agglomeration of particulate titanium dioxide and thus fails in exhibiting the transparency and ultraviolet-screening properties inherent in the titanium dioxide, because the surface of the particulate titanium dioxide is hydrophilic while silicone is highly hydrophobic, i.e., both components are incompatible with each other. The present invention provides a stable dispersion prepared by dispersing particulate titanium dioxide having a mean single particle diameter of 0.005 to 0.15 mu m in a silicone medium by the use of a dispersant.