By using our high-quality mineral fillers it is possible to have a targeted influence on technical parameters, such as gloss, covering power and cracking.
The silicate fillers have a strong matting effect, which can be controlled by way of the amount added.
The matting depends on the raw material and the fineness.
Excellent crack bridging
Dispersion paints tend to become more cracked, starting from a certain layer thickness. However, for facade paints, a crack-freeness of up to 900 μm layer thickness must be guaranteed. For some time, platelet-shaped fillers have been used for better crack bridging.
A filler combination of silica powder SIKRON® and long-needled wollastonite TREMIN® 939-100 USST does not exhibit any crack formation until over 1200 μm.
The incorporation into the dispersion is optimized by the special surface-treatment of the wollastonite.
A combination with feldspar also has an equally good crack bridging effect.
Feldspar in combination with long-needled wollastonite TREMIN® 939-100 USST exhibits even better crack bridging properties than with lamellar MICA.