BYK-378

Coatings Industry
Special Features and Benefits
The additive greatly increases surface slip and thereby also improves the scratch resistance. It causes a moderate to high reduction in surface tension and thereby excellent substrate wetting and a good anti-cratering effect. Fat edges (picture framing) are avoided. In matted systems it ensures a good orientation of the matting agent. BYK-378 displays a high effectiveness at low dosage and only stabilizes foam very slightly. It is widely compatible with aqueous, solvent-borne, and solvent-free systems, can be overcoated easily and does not tend to effloresce.

Recommended Levels
0.01-0.3 % additive (as supplied) based on the total formulation, in exceptional cases up to 0.5%.
The above recommended levels can be used for orientation. Optimal levels are determined through a series of laboratory tests.
Incorporation and Processing Instructions
The additive can be incorporated during any stage of the production process, including post-addition.

Adhesives
Special Features and Benefits
The additive causes a moderate to high reduction in surface tension and thereby excellent substrate wetting. It displays a high effectiveness at low dosage and only stabilizes foam very slightly. BYK-378 displays no negative impact on adhesion and does not migrate.
Recommended Use
BYK-378 is used in all common reaction adhesives, for example that are based on polyurethane, epoxy or acrylate.
Recommended Levels
0.01-0.3% additive (as supplied) based on the total formulation, in exceptional cases up to 0.5%.
The above recommended levels can be used for orientation. Optimal levels are determined through a series of laboratory tests.
Incorporation and Processing Instructions
The additive can be incorporated during any stage of the production process, including post-addition.

Polyether-modified polydimethylsiloxane