Anti-fouling marine paints containing microencapsulated anti- fouling agents and the process of microencapsulation

摘要

A process for microencapsulating water-immiscible chemicals is disclosed which comprises mixing a colloidal solution of gelatin Type A and gum acacia with an emulsion or slurry of the water-immiscible chemical, both of which are prepared and mixed at a temperature above about 50 C., and allowing the mixture to cool so that the droplets or particles of water-immiscible chemical are encapsulated with a macromolecular membrane of a complex coacervate of gelatin and gum acacia. Anti-fouling marine paints capable of sustained release of anti- fouling agent are prepared by adding microcapsules of anti-fouling agents to a marine paint vehicle.