| 摘要 |
PURPOSE: To provide the subject powder having transparency and high light- scattering property and, accordingly, useful as an additive for cosmetics, etc., effective for masking the wrinkles while preventing the white appearance. CONSTITUTION: This spherical inorganic powder has a refractive index of 1.5-2.0, a volume-average particle diameter of 0.1-4μm and a transmitted light scattering ratio of >=70% and a total transmittance of >=80%. The transmitted light scattering ratio and the total transmittance are defined by the formulas, Td/(Tp+ Td)}×100 and (Tp+Td), respectively, wherein Tp is a parallel light transmittance and Td is a scattered light transmittance measured by a haze meter on a thin film produced by uniformly dispersing a specimen in a dispersion medium having a refractive index of 1.4-1.5 at a concentration of 20wt.% and forming a thin film having a thickness of 15μm.
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