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

A 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, an amino organosilane coupling agent and a fatty acid hydrophobizing agent. The particulate metal oxide is suitable for use in forming a dispersion, and the particles and dispersion can be used in an end-use sunscreen composition which is transparent, exhibits effective UV absorption properties, reduced photoactivity, and/or improved skin feel.

主权项

1. A particulate metal oxide comprising metal oxide core particles having a coating layer comprising an inorganic material and (i) a quaternary silane coupling agent, and/or (ii) a silane coupling agent and a hydrophobizing agent.