... .>A defoamer or an anti-foaming agent is a chemical additive that reduces and hinders the formation of foam in ... and entrained or entrapped air. A wide variety of chemical formulas are available to promote coalescence of foam.2. ... pulp, paper, paint, industrial wastewater treatment, food processing, oil drilling, machine tool industry, oils cutting tools, hydraulics, etc.PharmaceuticalsAntifoaming ...