| abstract |
PROBLEM TO BE SOLVED: To enhance the reduction activity of titanium dioxide as a photocatalyst component to be blended, reduce the rate of removal of nitrogen oxides in the air as nitric acid, and have excellent storage stability and Provided is a coating composition excellent in general coating film performance including film appearance, weather resistance, heat resistance and the like. SOLUTION: The composition comprises (A) at least one component selected from a hydrolyzable organosilane represented by methotrimethoxysilane and the like, a hydrolyzate of the organosilane and a partial condensate of the organosilane, And (B) ultrafine titanium dioxide particles having a crystallite diameter of 10 nm or less contain fine particles of a composite oxide dispersed in a metal oxide other than titanium dioxide, or the components (A) and (B); (C) A polymer having a silyl group having a silicon atom bonded to a hydrolyzable group and / or a hydroxyl group at a terminal and / or a side chain of a polymer molecular chain. |