Troykyd D472 Silicone-free Troy Defoamers / Anti-Foaming Agents >> Non silicone based ADHESIVE >> Water-based SEALANT Troykyd D472 Troykyd D472 is a silicone-free liquid defoamer formulated for stability in high pH aqueous systems. The product is recommendad for aqueous adhesive systems in which a clear, particle-free, hydrocarbon-free defoamers is required. Clear, particle-free, hydrocarbon-free, silicone-free liquid defoamer. Used for aqueous adhesive systems and in sealants. Provides stability in high pH aqueous systems.