Patent ID: 8293257

Claim:
An oily dispersion comprising only two components of a dispersion medium and a surface-treated inorganic microparticle oxide powder, wherein the dispersion medium is an oil, the surface-treated inorganic microparticle oxide powder is a powder surface-treated with branched fatty acid containing isostearic acid as a primary constituent component or a metal salt containing isostearic acid as a primary constituent component at an amount of 3 to 15% by weight with respect to the powder as a base material, and is powder surface-treated using isopropanol or by wet dispersion with a water-soluble salt of aluminum oxide or a water-soluble salt of aluminum hydroxide; and the surface-treated inorganic microparticle oxide powder has a solid concentration of 25% by weight or more and a viscosity of 2,000 mPa·s or less at 25° C. in the preparation of the oily dispersion.