Byk -300 Polyether modified polydimethylsiloxane BYK Chemie Antiblocking agent >> Silicones/Silica/Siloxanes Flow / Levelling agent >> Silicone Slip control >> Silicone Surface conditioner, miscellaneous >> Gloss control Coatings >> Solventborne Coatings >> Solvent-Free/ High-Solids Xylene/isobutanol (4/1) Byk® -300 is a solution of a polyether modified dimethylpolysiloxane-copolymer. Standard silicone additive to improve surface properties in all solvent-based coatings. It reduces surface tension and therefore provides better substrate wetting. At the same time surface slip is increased and anti-blocking properties are improved. Formation of Bénard cells is avoided, levelling and gloss are improved. Solution of a polyether modified dimethylpolysiloxane-copolymer. Used in coatings. Provides better substrate wetting. Offers increased surface slip. Exhibits improved anti-blocking properties. Possesses improved levelling and gloss.