Silicone defoamers and silicone antifoams contain non-ionic surfactants & functional additives. With the help of different surfactants, various types of Silicone antifoams and Silicone antifoam emulsion can be formed. Depending upon the nature of surfactants such as non-ionic, cationic, anionic or amphoteric, the liquid can be either aqueous, non-aqueous or both. These silicone antifoam emulsions are the result of dissolved actives in a liquid that alter the surface tension of the liquid.