ALUMINUM SILICATE
A micronized precipitated Aluminium Silicate, which is highly suitable as a white pigment in the production of various paints, especially consisting of polymeric dispersions both for exterior and interior use.
TYPICAL PHYSIOCHEMICAL PROPERTIES
| PROPERTY
|
UNIT | VALUE |
| Specific surface area |
m2/g |
60-80 |
| Mean particle size |
mm |
4-6 |
| Tapped density (after storage) |
g/l |
200-250 |
| Loss on drying (2 hrs at 105°C) |
% |
5-7 |
| Loss on Ignition (2 hrs at 1000°C) |
% max |
8 |
| pH value |
– |
9.5-10.3 |
| DBP absorption |
g/100g |
160-180 |
| SiO2 content |
% |
82 |
| Al content as Al2 O3 |
% |
9.5 |
| Na content as Na2O |
% |
8 |
| Fe content as Fe2 O3 |
%. |
0.03 |
| Sulfate content as SO3 |
% max |
1.0 |
| Sieve residue 45 mm |
% max |
0.1 |
| Packing |
Kg/bag |
25 |
ADVANTAGE OF OUR PRODUCTS IN PAINTS:
- Higher degree of whiteness and hiding power of the paint once applied (when dry). Greater development of the degree of whiteness of the white pigments used.
- Cost reduction in the formula, especially when titanium dioxide is substituted. Up to 20%-30% in weight of the white pigments used can be substituted.
- Increased stability of the paint during storage over long periods. It acts as an anti-settling agent and a regulatory agent of the viscosity and of the pH.
- Gives exterior paints good weathering properties and reduces its tendency to dirt pick-up.
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