DM 2193 Nonionic oil-based Thornley Company Defoamers / Anti-Foaming Agents Polyvinyl Alcohol (PVOH) ADHESIVE A 100% active nonionic oil-based general purpose adhesive defoamer. It provides excellent bubble break and persistence in polyvinyl alcohol resin systems. It also is recommended for starch and cellulosics 100% active nonionic oil-based defoamer for adhesives. Provides very good bubble break and persistence in polyvinyl alcohol resin systems. Recommended for starch and cellulosics.