| 摘要 |
PURPOSE:To protect a ship bottom stably over a long period of time from fouling and to prevent it from being blackened in polluted sea areas, by applying a specified antifouling clear varnish to the surface of the coat of an inorg. copper compd.-contg. antifouling paint applied to the ship bottom. CONSTITUTION:An antifouling clear varnish contg. a triorganotin salt of an alpha, beta-unsaturated monobasic acid (A) obtd. by condensing a tri-organotin compd. such as bis(tributyltin) oxide with (meth)acrylic acid and a copolymer compsn. (B) of an ethylenically unsaturated monomer such as acrylic acid or vinyl acetate as principal ingredients is used. Further, the varnish may contain an org. antifouling agent, a pigment, etc. The bottom of a ship is coated with an antifouling paint contg. an inorg. copper compd. such as cuprous oxide or copper rhodanide, which may contain an org. antifouling agent. The surface of the coat of said paint is then coated with said clear varnish to form a coating film having a dry thickness of 30mu or more.
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