ANTIFOULING COATING COMPOSITIONS

摘要

An antifouling coating composition comprises a water-erodible binder polymer having protected acid functionality and includes an ingredient having biocidal properties for marine fouling organisms. The binder polymer is a star polymer having at least 3 limbs radiating from a central core, the acid functionality being present in the said limbs of the polymer. The protected acid functionality can for example be carboxylic acid functionality protected by a divalent metal or organometallic radical bonded to the residue of a monobasic organic acid, a monoamine or quaternary ammonium groups, triorganosilyl groups or triorganotin groups, or sulphonic acid functionality blocked by a monoamine or quaternary ammonium group.