Foamaster PD-1 Cognis Defoamers / Anti-Foaming Agents Polyvinyl acetate emulsions & derivatives (PVAc…) Polyvinyl Alcohol (PVOH) ADHESIVE FOAMASTER® PD 1 is a defoamer and anti-foaming agent in powder form for cement and concrete products. FOAMASTER® PD 1 can easily be mixed with all components of coatings and adhesives in powder form. It is preferably used in formulations based on polyvinyl acetate, polyvinyl alcohol, casein, soya protein, wheaten flour and dextrin. Dry mixtures containing FOAMASTER® PD 1 powder wet out faster and more uniformly. Entrained air which causes problems in pumping, trowelling and obtaining a complete cavity fill is eliminated. Due to the elimination of air bubbles, FOAMASTER® PD 1 prevents excessive shrinkage, porosity and other disadvantages of the applied cement or concrete. Furthermore, the impermeability is improved. Defoamer and anti-foaming agent for cement and concrete products. Can easily be mixed with all components of adhesives in powder form. Used in formulations based on polyvinyl acetate, polyvinyl alcohol, casein, soya protein, wheaten flour and dextrin. Prevents excessive shrinkage, porosity and other disadvantages. Improves impermeability.