| abstract |
[57] [Problem] To have excellent storage stability despite having photocatalytic ability, and furthermore, coating film appearance, adhesion, weather resistance, alkali resistance, organic chemical resistance, (temperature) resistance. Provided is an aqueous dispersion which is excellent in long-term durability such as water resistance and stain resistance, and which can form a coating film which is transparent, has high hardness and can be made thick, and is useful as an environmentally friendly coating material. SOLUTION: A polymer containing (A) a polyorganosiloxane (a) component and a vinyl polymer (b) component, and (B) a semiconductor fine particle and / or sol having photocatalytic ability are contained in an aqueous medium. An aqueous dispersion obtained by dispersing in water. |