DM 2149 Nonionic oil-based Thornley Company Defoamers / Anti-Foaming Agents Polyvinyl acetate emulsions & derivatives (PVAc…) Polyvinyl Alcohol (PVOH) ADHESIVE A 100% active nonionic oil-based general purpose defoamer. It provides excellent compatibility with most adhesive systems, particularly polyvinyl alcohol and polyvinyl acetate resin systems. Low concentrations result in excellent foam control and smooth films. 100% active nonionic oil-based defoamer. Offers good compatibility with most adhesive systems. Provides good foam control and smooth films at low concentrations.