Portalum® B 25 is produced from carefully selected bauxite (natural hydrated alumina) that has been calcined at 1650 °C to a high density Al 2O3. The main constituent of calcined bauxite is corundum, the second hardest mineral after diamond. The hardness of Portalum® B is used mainly in specific paint applications where the utmost hardness, abrasion resistance and antiskid properties are demanded. Examples include inner linings of bulk carrier ships, anti-skid flooring applications and anti-skid surfaces of traffic bridges. The apparent density of this grade is 1.8g/cm3.
Sibelco offers service and technical support to deliver local solutions supported by global resources for the Paint and Coating Industry. Sibelco’s unique Coating product range includes high quality engineered fillers and extenders across a wide range of application fields, including marine and industrial coatings, powder coatings, wood, and decorative paints.
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