Dehydran 1293 Modified polydimethyl siloxane Cognis Defoamer / Antifoaming agent >> Silicone Acrylic/Acrylate Resins Polyurethane Coatings >> Waterborne Wood & Furniture Coatings Metal DEHYDRAN 1293 is a defoamer and deaerating agent for use in purely aqueous coatings and those coatings containing cosolvents based on polymer emulsions and applied by curtain coating, spraying, dipping, rolling or brushing on wood, wood products or metal. Solution of a special modified polydimethyl siloxane. Due to its long-term defoaming effect DEHYDRAN 1293 has proved to be suitable in emulsion and suspension polymerization, particularly in the manufacture of PVC, vinyl acetate and acrylic emulsions. DEHYDRAN 1293 may be used during polymerization and monomer stripping. Emulsion paints based on pure acrylates and acrylic copolymers. Wood coatings based on acrylates and PU-emulsions. The optimum dosage depends on the individual formula and should be determined by appropriate tests, but it is generally in the region of 0.5 - 3.0%, calculated on the total batch. To ensure maximum performance DEHYDRAN 1293 should be added to the batch as the last ingredient by stirring intensively. In the manufacture of paints, part of the total defoamer quantity may be added to the mill base or to the premix. Solution of a special modified polydimethyl siloxane. Used as a defoamer and deaerating agent for use in purely aqueous coatings and those coatings containing cosolvents based on polymer emulsions such as emulsion paints based on pure acrylates and acrylic copolymers and wood coatings based on acrylates and PU-emulsions. Offers long-term defoaming effect. <br> Use level: 0.5-3% calculated on the total batch.