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24/7 Customer Support
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Calcined Kaolin is a high-brightness, fine-particle calcined kaolin specifically designed for the coating industry. It has excellent opacity, strong tint strength, low residue, and is easily dispersible. The calcination process results in enhanced properties that provide increased coverage and color strength, while the product’s low residue ensures improved surface finish and quality.
Property |
Value |
Physical Form |
Highly Pulverized Powder |
ISO Brightness (%) |
94.5 Min |
Screen Residue, 325 Mesh (%) |
≤0.005 |
Free Moisture @ 105°C (%) |
≤0.5 |
pH (28% solids) |
6.0-7.0 |
Specific Gravity (g/cm³) |
2.63 |
Sedigraph Particle Size (% <2μm) |
76±2 |
Oil Absorption (g/100g) |
58-63 |
Bulk Density (kg/m³) |
420 |
Hegman |
4.0 Min |
Chemical Composition (%)
SiO2 |
Al2O3 | Fe2O3 | TiO2 | K2O | Na2O | CaO | MgO |
52.0±1 | 45.0±1 | ≤0.50 | ≤0.80 | ≤0.10 | ≤0.20 | ≤0.50 |
≤0.20 |
Calcined Kaolin is widely used in the coating industry for its high brightness and fine particle size distribution. It enhances the opacity and gloss of coatings, improves brushability, and ensures stability, preventing layer separation after long storage. The product also improves the mechanical properties of the film, such as impact resistance and moisture-proof capabilities. Additionally, it shields coatings from UV rays, improving weather resistance, anti-corrosion, and heat, acid, and alkali resistance.
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