| abstract |
(57) [Problem] To provide an inorganic antibacterial agent having high antibacterial properties and exhibiting a stable antibacterial action. SOLUTION: The surface of a fine powder of an inorganic oxide having an average particle diameter of 1 micron or less is composed of one element or two or more elements selected from aluminum, silicon, zirconium or zinc, and silver. By coating with a composite oxide coating layer, the amount of the antimicrobial agent eluted can be increased, and stable antimicrobial properties can be obtained. |