Patent ID: 7297727

Claim:
A terpolymer having an Erosion Rate in seawater that is suitable for use as a binder in a marine antifouling paint and having improved flexibility comprising a) a polymer of the formula -[A]-[B]- where A is present from above 9 to less than 20 mole percent based on the total molar amount of monomers used to make the polymer(s) comprising the marine antifouling paint, and comprises one or more triarylsilyl(meth)acrylol groups (—XSiR 3 ) wherein each R may be the same or different and is a substituted or unsubstituted aryl or heteroaryl group, X is the residue of an acryloxy or methacryloxy group; and B represents the residue of methyl methacrylate and one or more other different ethylenically unsaturated monomers copolymerizable with A, and wherein the terpolymer is characterized by an Erosion Rate in sea water of from 2 to 15 microns per month; and b) one or more stabilizing agent(s) selected from a dehydrating agent, a zeolite, an acid neutralizer, an amino containing compound, an antioxidant, a chelator, and/or an alkoxy silane.