POROUS AND/OR HOLLOW MATERIAL CONTAINING UV ATTENUATING NANOPARTICLES, METHOD OF PRODUCTION AND USE

摘要

The present invention provides UV attenuating nanoparticles entrapped in porous particulates that are coated with a wax material. The porous particulates also include a fatty acid applied to the wax coating. Also provided is a method of producing a powder comprised of UV attenuating nanoparticles entrapped in porous particulates coated with a wax material. Further provided is a composition, such as a cosmetic composition, which includes the porous particulates loaded with the UV attenuating nanoparticles.

主权项

1. A method of producing a substantially non-nano powder composite ingredient for inclusion in cosmetic compositions, comprising:
combining particulates having at least one void therein with UV attenuating nanoparticles so that the UV attenuating nanoparticles enters voids of the particulate; adding wax at a temperature above the melting point of the wax to the combined nanoparticle-particulate; and mixing the melted wax with the nanoparticle-particulate to contain the nanoparticles within the at least one void of the particulate to entrap substantially all of the nanoparticles inside the porous particulates.