Filler properties and effect in the system/formula:
- loose structure, small particle size
→ easy and rapid incorporation, excellent dispersion properties (especially puriss products), very low sedimentation, no hard sediment, good rheological properties, matting effect, very fast drying, good mechanical properties, good corrosion protection
- non-ground filler, low grit content
→ low abrasivity
- mineralogical composition (hardness)
→ scratch resistance, abrasion resistance
- very low electrical conductivity (< 100 µS), no butter effect
→ no disturbing salts/electrolytes, good stability in water-based systems, good corrosion protection
- chemically inert
→ weather and chemical resistance, expecially against acids
- refraction index similar to binder
→ good transparency/translucency
- surface treatment possible
→ good interaction with the polymer matrix, rheology control
- high purity
→ also suitable for food contact incl. drinking water as per BfR and FDA regulation