Paint composition used for ship with reduced frictional resistance utilizing gas lubrication function in water, coating film formed from the composition, ship coated with the coating film, method for manufacturing the ship, and reduction of frictional resistance Method for predicting effect, apparatus used for predicting frictional resistance reduction effect, and frictional resistance reducing system used for frictional resistance-reducing ship

摘要

The present invention addresses the problem of providing: a ship with a reduced friction drag, which can keep the affinity for a gas such as air in water for a long period, has a high fluid friction drag reduction effect, is economically advantageous and has little influence on the environment; a coating composition which enables the formation of a coating film that can keep the affinity for a gas such as air in water for a long period, has a friction drag reduction effect and can exhibit a stain-proof function under stream or under static conditions; and others. The present invention relates to a coating composition which enables the formation of a coating film having a specified static in-water bubble contact angle and a specified in-water bubble roll (slip) angle and can be used for a ship with a reduced friction drag utilizing a gas-lubricating function in water. The present invention also relates to a stain-proof coating composition which comprises a specific organopolysiloxane (A), a specific organosilane (B) and a specific hydrophobic material (C) in specified amounts and can be used for a ship with a reduced friction drag utilizing a gas-lubricating function in water.