Hi-Mar LB-6817 Glycol Hi-Mar Specialties Defoamer / Antifoaming agent >> Silicone-free Acrylic/Acrylate Resins Dispersible in water Hi-Mar LB-6817 Glycol/organic Defoamer 100% Acrylic Styrene/ Acrylic Glycol/organic defoamer. Used for 100% acrylic and styrene/acrylic coatings.