BYK Additives & Instruments is one of the world’s leading suppliers in the field of additives and measuring instruments. As a globally operating specialty chemicals company, BYK has production sites in Wesel, Kempen, Moosburg and Schkopau (Germany), Deventer and Denekamp (Netherlands), Widnes (UK), Wallingford, Chester, Gonzales, Louisville (USA) and Tongling (China).

BYK-1640

MITM02184
ITM03896, ITM03897

Polymer-based, VOC- and silicone-free defoamer for aqueous coatings, printing inks, adhesives, paper coatings and construction chemicals. Optimum performance at the lowest dosage. Suitable for applications that come into contact with food.

Applications

Coatings Industry

BYK-1640 is a very versatile defoamer for aqueous systems. The additive is particularly recommended for the production and application of emulsion paints and plasters within a PVC range of 30-85. The additive is free of silicones and mineral oil, and is especially suitable for VOC-free systems. BYK-1640 exhibits optimum performanceat the lowest dosage, is stable to acids and alkalis, and can be used in the pH range 3-12. BYK-1640 can be used in aqueous OPVs and internal coatings (pigmented and clear coatings) in the can coatings field. The additive can also be post-added and shows very good compatibility. BYK-1640 has a spontaneous defoaming effect and is also suitable for preventing microfoam. In coil coating systems, BYK-1640 can be used both in the millbase and be post-added.

Adhesives & Sealants

BYK-1640 is a highly effective defoamer for all common dispersion adhesives, such as acrylic, polyurethane, and EVA dispersions. It inhibits foaming during both production and application. The product is free of silicones and mineral oil, and is especially recommended for VOC-free systems. It exhibits optimum performance at the lowest dosage, is stable to acids and alkalis, and can be used in the pH range 3-12.

Paper Coatings

BYK-1640 is a highly effective defoamer for all common paper coatings. It defoams and simultaneously inhibits the formation of foam, both during production of the coating as well as during its application using various application methods, such as film or size press, blade or curtain coating. The product is free of silicones and mineral oil, and exhibits optimum performance at the lowest dosage. As a result of its approval for use in contact with food, BYK-1640 can also be used in paper coatings which are to come into contact with food.

Printing Inks

BYK-1640 is particularly suitable for aqueous printing inks, overprint varnishes, and aqueous, radiation-curable printing systems. As a result of its approval for use in contact with food, BYK-1640 can also be used in printing inks which are to come into contact with food.

Construction Chemicals

BYK-1640 is a highly effective defoamer when producing common plasticizers based on lignin and naphthalene sulfonate. The additive is free of silicones and mineral oil and offers an alternative to TIBP/TBP that does not require labeling. BYK-1640 exhibits optimum performance even at a low dosage.

Recommended Use

  • Architectural coatings
  • Coil/Can coatings
  • Protective coatings