Organic-Inorganic Hybrid Sun Blocking Powders Based on Polysilsesquioxane

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Trialkoxyorganosilanes containing p-methoxybenzoyl group were sybthesized and polymerized in shapes of spheres. The resulting spherical powder had narrow size distributions and showed promising characteristics as organic-inorganic hybrid UV blocking agents. Regardless of the sizes of powders, no whitening took place unlike other UV blocking agents with similar sizes. These particles also showed high boosting effect to have SPF values up to 50. Preparation of spheres and some prototype cosmetic products will be presented.

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Journal: TechConnect Briefs
Volume: 4, Technical Proceedings of the 2007 NSTI Nanotechnology Conference and Trade Show, Volume 4
Published: May 20, 2007
Pages: 254 - 256
Industry sector: Advanced Materials & Manufacturing
Topics: Nanoparticle Synthesis & Applications
ISBN: 1-4200-6376-6