| 摘要 |
PROBLEM TO BE SOLVED: To provide a dispersion containing a large amount of UV-shielding inorganic particles in a dispersion medium containing large amount of a lower alcohol and, nevertheless, having low viscosity and excellent dispersion stability and provide a method for producing the dispersion and a UV-shielding cosmetic compounded with the dispersion. SOLUTION: The dispersion containing 30-60 wt.% UV-shielding inorganic particles is produced by dispersing UV-shielding inorganic particles having a primary particle diameter of≤0.1μm in a solvent containing a lower alcohol and a silicone oil and having a lower alcohol content of 10-80 wt.% in the presence of (a) a modified silicone polymer derived from a monomer having a polysiloxane bond in the main chain and a hydrophilic group on the side chain and having a functional group equivalent of≤15,000 g/mol or (b) a (meth)acrylate-base or a (meth)acrylamide-base silicone-containing copolymer having a silicone on the side chain and a weight-average molecular weight of 6,000-500,000. The invention further provides a method for producing the dispersion, and a UV-shielding cosmetic compounded with the dispersion containing the UV-shielding inorganic particles. COPYRIGHT: (C)2007,JPO&INPIT
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