| 摘要 |
PROBLEM TO BE SOLVED: To obtain a photocatalyst-containing coating material composition which as such does not generate a harmful component by employing a component harmless to the human body as the binder and, in addition, can cope with the deterioration of a coating film even if it is caused, and a method for preventing the deterioration of a photocatalyst-containing coating film. SOLUTION: This photocatalyst-containing coating material composition comprises a natural adhesive paste as the binder, a substance having a photocatalytic action and water. Since the natural adhesive paste is used as the binder, there is no possibility that the photocatalyst-containing coating material composition as such releases a harmful component. Accordingly, this composition is most suited to the coating composition for coping with the sick house syndrome. Even when the deterioration of a coating film is caused by the photocatalytic action, it can be periodically restored by forming a new coating film on the deteriorated coating film any number of times. |
