Patents

Kao Patents Cosmetic

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By: TOM BRANNA

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US Patent No. 8,535,697 B2; Kao has patented a process for preparing a cosmetic composition that comprises an O1/W/O2 emulsion composition, which comprises, in oil phases O1 and O2, fine metal oxide particles having ultraviolet screening ability. The process comprises preparing an O1/W emulsion comprising, in the oil phase O1 thereof, fine metal oxide particles having ultraviolet screening ability, by means of (A) a polymer composed of hydrophobic monomer units and hydrophilic monomer units and ...

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