| abstract |
(57) [Summary] (Solution) A curable composition containing (A) an organopolysiloxane having a condensation-reactive functional group at both ends of a molecule and (B) hydrophobic silica. A curable composition wherein the hydrophobic silica (B) is heat-treated with the organopolysiloxane (A). The organopolysiloxane (A) has the following formula [α]: W 3-a (R 1 a ) Si (R 2 ) During O- (Si (R 2) O ) n -Si (R 1 a) W 3-a ( wherein [alpha], W represents a hydroxyl group or a hydrolyzable group, R 1 and R each independently represent an unsubstituted or substituted monovalent hydrocarbon group having 1 to 12 carbon atoms, and a plurality of R 1 and R are Each may be the same or different, n represents an integer of 5 or more, and a represents 0, 1 or 2. ) Is preferable. [Effect] A coating film having a uniform thickness is obtained by coating, and the obtained coating film has excellent coating film strength and coating film hardness, and when used as an antifouling paint, exhibits good antifouling performance for a long time. You. |