Yes. Molecular defoamers are surface-active agents that break foam at the molecular level rather than through incompatibility. Typically, foam-causing components stabilize foam because of ionic forces, hydrogen bonding, and van der Waals forces. In aqueous systems, molecular defoamers destabilize the foam by disrupting these forces and causing the foam to collapse—thereby reducing surface defects.

Air Products' new Surfynol MD-20 molecular defoamer is a 100% active, solvent-free, nonsilicone liquid product based on Gemini surfactant technology. Used alone or with other Surfynol and EnviroGem additives, Surfynol MD-20 is exceptionally effective at eliminating microfoam and other foam-related defects in waterborne systems.