Foam is a coarse dispersion of a gas in a liquid in which the volume percentage of gas is larger than the volume fraction of liquid. Foams are a major issue in industrial processes. They cause damage to the surface coatings. They obstruct efficient container filling. Defoamers are chemical additives that minimize or prevent foam formation in industrial process liquids such as paints, inks, adhesives, and even construction materials. Although the phrases antifoam agent and defoamer are frequently used interchangeably, antifoam agents refer to compounds that prevent the creation and development of bubbles.