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The prevention and elimination of foam is essential during production, filling and application of waterborne coatings. Foam free films guarantee an excellent optical appearance and durability of the coating. The brands TEGO® Foamex, TEGO® Airex, SURFYNOL® and AIRASE® offer a variety of products to the formulator finding the right balance of effectiveness against foam and compatibility with the coating system. The full spectrum of foam issues such as macrofoam, microfoam or the need for fast foam breakdown can be solved by using different technologies e.g. silicone-based and silicone-free including the concept of molecular defoamers.