PARTICULATE METAL OXIDE PARTICLES COMPRISING A METAL OXIDE CORE AND A COATING LAYER COMPRISING AN INORGANIC MATERIAL, A SILANE COUPLING AGENT AND/OR A HYDROPHOBIZING AGENT

摘要

The particulate metal oxide has a metal oxide core and a coating layer containing an inorganic material and (i) a quaternary silane coupling agent, and / or (ii) a silane coupling agent and a hydrophobizing agent. Preferred materials are titanium dioxide core particles, amino organosilane coupling agents and fatty acid hydrophobicizing agents. Particulate metal oxides are suitable for use in forming dispersions and the particles and dispersions can be used in end-use sunscreen compositions that exhibit clear, effective UV absorption properties, reduced photoactivity, and / or improved skin tenderness .