NDSU patents thermoset siloxane-urethane fouling release coating

October 6, 2011

Patent No. U.S. 7,989,074 B2
North Dakota State University Research Foundation has obtained a patent for a substrate having a surface capable of being exposed to aquatic conditions; wherein the surface has a fouling release coating thereon; and the coating is comprised of a polymeric material prepared by reacting a mixture comprised of an amino functional polyorganosiloxane comprised of aminoalkyl terminated polydimethylsiloxane; polyisocyanate; and polyol, which is comprised of hydroxy-functional poly(meth)acrylate; wherein the polyisocyanate is comprised of hexamethylene diisocyanate trimer, isophorone diisocyanate trimer or a mixture thereof; and the hydroxy-functional poly(meth)acrylate is formed from a monomer mixture comprised of hydroxyalkyl acrylate and alkyl acrylate; and the fouling release coating has an initial water contact angle of at least about 90°.