| 摘要 |
PROBLEM TO BE SOLVED: To obtain a coating composition capable of giving a coating film improved in staining resistance, durability, and design properties by dispersing a photocatalytic semiconductor material, a difficultly decomposable binder, and a difficultly decomposable colorant in a solvent. SOLUTION: This composition is obtained by dispersing in a solvent a photocatalytic semiconductor material; a difficultly decomposable binder; and a difficultly decomposable colorant selected from an inorganic pigment having oxidation resistance and reduction resistance, a pigment prepared by allowing an extender pigment to absorb a colorant, a pigment coated with a difficultly decomposable material, a pigment prepared by coating a pigment prepared by allowing a difficultly decomposable extender pigment to absorb a colorant with a difficultly decomposable material, and a pigment mixed with a discoloration inhibitor. The composition is applied to the surface layer 1 of a substrate cleaned with a cleaner through a primer layer, and the wet film is dried or cured to obtain an article coated with a coating film in which the material 2, the binder 3, and the colorant 4 are dispersed. The drying or the curing can be practiced by standing at room temperature, forced drying, heating, ultraviolet irradiation, or the like.
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