Laminated antifouling coating film, substrate with laminated antifouling coating film and manufacturing method thereof, coating kit for forming laminated antifouling coating film, upper layer antifouling coating composition, and antifouling method

摘要

A laminated antifouling coating film in which a lower antifouling coating film (X) and an upper antifouling coating film (Y) are laminated, wherein the lower antifouling coating film (X) contains a polymer (B1) and an organic antifouling agent (C1), the polymer (B1) is a polymer having a structural unit derived from a monomer having an unsaturated double bond, wherein the upper layer antifouling coating film (Y) contains a hydrolyzable polymer (A2).