| abstract |
Disclosed is a coating film having excellent resistance to a decomposition reaction activated by a photocatalyst and excellent flexibility, and a photocatalyst-containing coating composition capable of forming the coating film. A polyhydroxysiloxane having substantially no (A) alkoxy group, (B) an aqueous organic binder, and (C) a photocatalyst, and (A) a poly having substantially no alkoxy group. The photocatalyst containing coating composition whose polyhydroxysiloxane density | concentration in the total solid of a hydroxysiloxane and (B) aqueous organic binder is 50-95 mass%. [Selection figure] None |