Water-based hydrophilic coating composition that forms a film excellent in self-cleaning ability against adhering dirt and surface treatment material that forms a film excellent in self-cleaning ability against adhering dirt

摘要

A water-based hydrophilic coating composition is characterized in that it is obtained by adding to a liquid medium: an inorganic compound (A) with colloidal silica (a) modified with at least one or more of organoalkoxysilane compounds (b) having one or more groups selected from the group consisting of a glycidyl group, a vinyl group and an amino group; a water-soluble resin (B); and amorphous silica (C) represented by M2O.SiO2, where the mass ratio of M2O/SiO2 is from 0.05 to 0.3.