Antifouling coating compositions

摘要

PCT No. PCT/GB91/01050 Sec. 371 Date Dec. 17, 1992 Sec. 102(e) Date Dec. 17, 1992 PCT Filed Jun. 28, 1991 PCT Pub. No. WO92/00357 PCT Pub. Date Jan. 9, 1992.Silicone rubber coatings resistant to fouling by aquatic organisms are based on a hydroxy-functional polydiorganosiloxane and a crosslinking agent therefor. The hydroxy-functional polydiorganosiloxane may be packaged separately from the crosslinking agent, or a stable package comprising a hydroxy-functional polydiorganosiloxane terminated by excess crosslinking agent may be packaged separately from further hydroxy-functional polydiorganosiloxane. In either case the two packages can be combined to give the optimum ratio of crosslinking agent to silicon-bonded hydroxyl groups to ensure cure and give optimum resistance to fouling, whilst overcoming the problem of premature gelation during storage.