ANTIBACTERIAL INORGANIC COMPOSITE POWDER HAVING EXCELLENT COLOR STABILITY AND ANTIBACTERIAL PROPERTIES AND PRODUCTION THEREOF

摘要

PURPOSE: Provided are an antibacterial inorganic composite powder having excellent color stability and antibacterial properties and a production thereof by coating zinc oxide hydrate of ultrafine particles on fine particles of silica(granular, platy, amorphous). CONSTITUTION: Zinc oxide hydrate of ultrafine particles controlled to the nanometer level is coated on fine particles of silica having a size of 0.5 to 10m, doped with metal silver and then absorbed with an alkali metal salt of silicic acid. Thereafter, the product is heated to form a protective coating layer of a silicate component while forming a fine crystal composite from zinc oxide thereof and metal silver and then ground into a mean particle size of 0.5 to 10m.