NOVELTY - Silicone composition comprises a continuous phase of a polar organic liquid having dispersed in it particles of a silicone antifoam material encapsulated within an organic encapsulating material which is solid at 25 degrees C, is sparingly soluble in the polar organic liquid at 25 degrees C, but is dissolved in the polar organic liquid at 40-100 degrees C.    USE - The silicone composition is used for controlling foam in an aqueous medium (claimed). It is used, e.g. in the pulp and paper industry, paints and latex coating processes, fertilizers, textile cleaning, drying and treating, fermentation processes, metal working, adhesives, caulk and polymer manufacture, food processing e.g. sugar extraction from sugar beet, oil extraction, cooling towers, and in municipal and industrial water treatment as well as in liquid or solid detergent compositions.    ADVANTAGE - Slow release of the silicone antifoam in the foaming medium provides greatly increased performance and high persistency. The inventive composition is stable and uniformly homogeneous.    DETAILED DESCRIPTION - Silicone composition comprises a continuous phase of a polar organic liquid having dispersed in it particles (11) of a silicone antifoam material (12) encapsulated within an organic encapsulating material (13) which is solid at 25 degrees C, is sparingly soluble in the polar organic liquid (14) at 25 degrees C, but is dissolved in the polar organic liquid at an elevated temperature of 40-100 degrees C. The three phase contact angle between the organic encapsulating material, the silicone antifoam, and the polar organic liquid is below 130 degrees measured through the silicone.    INDEPENDENT CLAIMS are also included for:    (a) a process for controlling foam in an aqueous medium, which comprises providing the inventive composition and adding it to the aqueous medium to control the foam in the aqueous medium; and    (b) a process for the production of an encapsulated silicone composition, which comprises dispersing a silicone antifoam material, a solid organic encapsulating material, and a hydrophobic silicaceous material in a polar organic liquid with shear so that the average silicone particle size is less than 0.5 mm, where the temperature of the resulting dispersion is high such that the organic encapsulating material is dissolved in the composition; and cooling the dispersion to deposit the organic encapsulating material onto the interface of the silicone particles while agitating to maintain the silicone particle size below 0.5 mm.    DESCRIPTION OF DRAWING(S) - The figure is a diagrammatic cross-section of a silicone dispersion.    Particles (11)    Silicone antifoam material (12)    Organic encapsulating material (13)    Polar organic liquid (14)