| 摘要 |
PROBLEM TO BE SOLVED: To provide an aqueous suspension of silver-supporting inorganic antibacterial agent fine particles having excellent redispersibility of the solid component of paint and giving a coating film having discoloration resistance, an aqueous paint composition having antibacterial property and a coated article having high safety and antibacterial function and produced by using the suspension, etc. SOLUTION: The aqueous suspension of fine particles of an antibacterial phosphoric acid double salt antibacterial agent comprises (a) fine particles of an antibacterial phosphoric acid double salt antibacterial agent obtained by supporting silver on a sparingly soluble orthophosphoric acid double salt wherein the equivalent ratio of calcium metal to the total equivalent number of the sparingly soluble orthophosphoric acid double salt of two or more kinds of metals selected from the group consisting of calcium, zinc, aluminum, magnesium and copper is 0.7-0.9 and (b) a dispersion medium. Preferably, the component (a) comprises fine particles of an antibacterial phosphoric acid double salt antibacterial agent having an average particle diameter of 0.5-2.0μm and the component (b) is water. The invention further provides a method for producing the aqueous suspension of the antibacterial phosphoric acid double salt antibacterial agent fine particles. COPYRIGHT: (C)2009,JPO&INPIT
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