USA As Represented by Secretary of the Navy

Alexander Lebovits

Timothy L Dapp

William B Mercer

William L Yeager

William L Yaeger

This invention relates to polymeric materials formable by casting at room mperature and having antifouling material incorporated therein. It is the reaction product of a) with polyether polyols and methylene bis (4-cyclohexyl) isocyanate, where a) is a polymer composition which is the reaction product of the distilled tributyltin oxide with a copolymer of either methyl methacrylate or methyl acrylate and, with either methacrylic acid or acrylic acid in such proportion that four (4) percent of the carbonyl groups remain unreacted.

Anti-fouling castable polymers and anti-fouling polyurethanes and

This invention relates to polymeric materials formable by casting at room mperature and having antifouling materials incorporated therein. It is the reaction product of (a) with polyether polyols and methylene bis(4-cyclohexyl) isocyanate, where (a) is a polymeric composition which is the reaction product of a distilled tri-butyltin oxide with a copolymer of either methyl methacrylate of methyl acrylate and, with methacrylic acid or acrylic acid in such proportions that 4% of the carbonyl groups remain unreacted.

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Baltimore, MD, United States of America

Alexander Lebovits