| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject composition capable of providing excellent effects on fouling prevention by fouling organisms sticking to ships, marine structures, etc., by including a specific antifouling agent and a prescribed resin. SOLUTION: This composition comprises (A) 10-500 pts.wt. of a thiocyanic acid compound (preferably methylene bisthiocyanate) and (B) 100 pts.wt. of a polyester resin containing >=90 mol.% of lactic acid residue in the resin, L-lactic acid residue/D-lactic acid residue (molar ratio) of 1-9, 0.2-1.0 dl/g reduced viscosity (ηsp/c ) and 35-70 deg.C glass transition temperature. Consequently, the objective antifouling coating material having high antifouling ability, extremely effective for fouling prevention for ship bottom parts, buoys, etc., due to low load on marine environment can be obtained.
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