Byk® -349

Technical Documents

Polyether modified siloxane. Acts as a silicone based surface additive to improve substrate wetting in aqueous systems.

Details

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Supplier
Chemical Composition

Polyether modified siloxane

Advantages
  • Provides a strong reduction of surface tension.
  • Exhibits very good substrate wetting and flow/leveling.
  • Offers an extremely low foam stabilization.
  • Does not increases surface slip and impairs recoatability.
  • Possesses highly effective spreading, wetting and leveling properties.
  • Especially suited for coating colors applied by curtain coating as it strongly improves tension rheology.
Other Applications

Used in aqueous coatings and printing inks.
Suitable for water-borne systems based on: styrene acrylic, pure acrylic and acrylic/PU combinations, crosslinkable polyurethanes and baking systems.

Technical data

Quantity Value Unit Comment
Recommended Levels 0.05 - 0.5 %
Physical Properties
Density 1.04 g/ml
Thermal Properties
flash point >100 ºC
Chemical Properties
Non-volatile materials >94 % wt