Byk -017 Compound of hydrophobic particles and polysiloxanes BYK Chemie Defoamer / Antifoaming agent >> Silicone Coatings >> Waterborne Architectural / Decorative General Industrial /Maintenance Pigment concentrates BYK®-017 is compound of hydrophobic particles and polysiloxanes. BYK®-017 is a silicone defoamer for aqueous pigment concentrates. It exhibits excellent defoaming during grinding and very good storage stability. This results in improved grindability and handling of the final pigment concentrates. It is used in architectural and industrial coatings. Compound of hydrophobic particles and polysiloxanes. Used in architectural and industrial coatings and pigment concentrates. Exhibits very good defoaming and storage stability. Offers improved grindability.