puriss Grades
The puriss grades of Neuburg Siliceous Earth are even more fine than classic Sillitin. The grit portion (sieve residue) of these products - which is already very low - is further reduces the abrasivity of this product range, thus protecting processing equipment, such as mixers, tools and nozzles for airless spraying.
Dispersal behavior in low-viscosity systems is also considerably improved. These effects are achieved through a final process after actual production. Puriss grades are therefore ideal for the manufacture of thin-walled articles and all applications requiring an excellent surface quality, whether this is for paints and varnishes, elastomers or plastics.
| Product Characteristics | Unit | Sillitin N | Sillitin Z | Sillikolloid P | |||
|---|---|---|---|---|---|---|---|
| Standard | puriss N 85 | Standard | puriss Z 86 puriss Z 89 | Standard | puriss P 87 | ||
| Residue > 40 µm | mg/kg | 25 | 8 | 20 | 8 | 20 | 8 |
| Residue > 200 µm | mg/kg | 5 | 1 | 3 | 1 | 3 | 1 |
| Dispersion Time in Ester Plasticizer | min | > 120 | 3 | > 120 | 7 | > 120 | 8 |
Dispersed with blade mixer 1200 U/min., 20 % filler material, grain size (Hegman gauge) ≤ 20 µm
