| 摘要 |
PROBLEM TO BE SOLVED: To provide a means capable of efficiently exhibiting an antimicrobial effect in comparison with the used amount of silver, when the silver is used to impart the antimicrobial performance to a pottery product. SOLUTION: This surface-treating agent is obtained by dispersing a silver molybdate in a glazing agent or other suspension. The silver molybdate is formed by subjecting an aqueous silver solution and an aqueous molybdenum solution to a reaction with stirring, and subsequently subjecting the reaction product to various processes such as a filtration process, a washing process, a drying process and a grinding process. The silver molybdate is added in an amount of 0.001-1 outer % converted into metal silver, and has a particle diameter of <=20μm, preferably 5-10μm. The addition of 10-50% (preferably 20-30%) of titanium dioxide to the silver molybdate enables the further improvement of the antimicrobial performance. The antimicrobial pottery product is obtained by coating the surface of the green body of a pottery product such as a tile with a conventional glazing agent, further coating the first coated surface with a glazing agent containing the silver molybdate to form the glazing layer in a two-layered structure, and subsequently sintering the coated green body. The glazing agent containing the silver molybdate may directly be coated on the green body of the pottery product.
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