Moisture curable antifouling coating compositions

A one-package moisture curable composition comprising, by weight percentage based on the dry weight of the composition, from 50 to 95% at least one silane terminated polybutadiene based polymer and from 5 to 50% at least one fluoro/fluoroalkoxy-functionalized silane having a formula R1nSi(OR2)4-n, where R1 is a fluorinated linear, branched or cyclic and mono- or oligo-alkyl group with 1-18 carbon atoms, R2 is an alkyl group and (OR2) is a hydrolytic group, n is an integer form 1 to 2;

• wherein the silane terminated polybutadiene based polymer is the reaction product of (a) a polybutadiene based polymer having at least one non-hydrolysable organic X group in the main chain or on at least one of the two ends of the polybutadiene based polymer's backbone or on the side chains of the polybutadiene based polymer, and selected from hydroxyl, amino, isocyanate, epoxy, maleic anhydride, thiol and acrylic ester groups, and (b) an organosilane (RO)nSi[(CH2)mY]4-n, where the Y group is capable of reacting with the X group and selected from hydroxyl, amino, isocyanate, epoxy, maleic anhydride, thiol, acrylic ester and vinyl groups, where the R group is a hydrolysable group capable of participating in a condensation reaction, n is an integer form 1 to 3, and m is an integer from 0 to 60;
• and wherein the composition, after being moisture cured, forms a surface whose water contact angle is larger than 101°.