| 摘要 |
<p>Powder composed of fine inorganic compound particles-deposited porous polyamide particles in which the inorganic compound particles are deposited on surfaces and in pores of the porous polyamide particles, the porous polyamide particle have a mean primary particle diameter in the range of 1 to 30 µm, the fine inorganic compound particles have a mean primary particle diameter in the range of 0.01 to 0.5 µm, and at least 80% of number of the fine inorganic compound particles contains no strong acidic component shows a high light-scattering property and gives no harmful effect to human body.</p> |
