A novel polymeric binder for an antifouling paint includes greater than 2.5 to less than 25 mole percent of a unit from a tributyltin acrylate or methacrylate monomer group, an acrylic or methacrylic ester monomer unit having selected substituent groups in the ester moiety so that the ester is hydrolyzable at a suitable rate in seawater, and a copolymerizable ethylenically unsaturated monomer unit. The presence of the hydrolyzable ester group in the polymer binder of the present invention enables the paint to erode at a desired rate in seawater even with the low tin content in the polymer, thereby providing a desired low level of tin in solution and exposing a fresh paint surface periodically.
一种新型的聚合物粘合剂用于防污漆,包括大于2.5至少于25摩尔百分比的来自三
丁基锡丙烯酸酯或
甲基丙烯酸酯单体组的单元,具有选择的取代基在酯基中,使酯在海
水中具有适当的
水解速率的
丙烯酸或
甲基丙烯酸酯单体单元,以及可共聚的
乙烯基不饱和单体单元。本发明中聚合物粘合剂中
水解性酯基的存在使得涂料即使在聚合物中
锡含量低的情况下也能在海
水中以所需的速率侵蚀,从而在溶液中提供所需的低
锡水平并定期暴露新的涂料表面。