DESCRIZIONE
A binder for a marine antifouling coating composition comprising a polyoxalate polymer with a Mw of at least 4000 g/mol, wherein said polyoxalate polymer comprises (i) a residue of an oxalate monomer selected from oxalic acid or a diester derivative thereof, (ii) a residue of a second monomer selected from a cyclic diester or cyclic diacid and (iii) a residue of a third monomer which is hydrogenated bisphenol A.