Patent ID: 8448697

Claim:
A coating composition in the form of a coating film adhered to a surface of an article, the coating composition comprising: a silica film composed of silica microparticles; and fluorine resin particles arranged in a dotted pattern in the silica film and partially exposed from a surface of the silica film, wherein an exposed area of the silica microparticles is larger than an exposed area of the fluorine resin particles, wherein amount of natrium contained in the coating composition is less than or equal to 0.5% in a ratio by weight to contained amount of the silica microparticles, and wherein an initial contact angle θ of waterdrops attached to a surface, of the coating film is equal to or less than 30 degrees and a subsequent contact angle θ of waterdrops attached to the surface of the coating film after exposure to 13000 L of running water equal to or less than 40 degrees.