To provide a rain gutter which can obtain a high level of photocatalytic degradation activity even when an enamel-coated surface and a clear-coated surface are coated with a thick film with a thickness of more than 2 μm so as to suppress a deterioration in the enamel-coated surface and the clear-coated surface; and to provide a coating liquid for the rain gutter.
Characteristically, this rain gutter has a photocatalytic layer provided on a surface of a base material; the photocatalytic layer is obtained by drying a photocatalytic coating liquid after applying it; the photocatalytic coating liquid includes photocatalytic metal oxide particles, silica particles and a curable silicone emulsion; and coating or modification treatment is partially applied to the hydrophilic silica particles by a substance with a hydrophobic group.
KAMESHIMA JUNJI
HAYAKAWA MAKOTO
Next Patent: ROOFING MATERIAL AND COATING LIQUID THEREFOR