IMSIL® microcrystalline silica fillers and extenders are produced from a unique alpha quartz. With a morphology of equally sized crystals in a grape like cluster, IMSIL is easily divided, wetted and dispersed in waterborne and solvent based systems. The surface area of these crystals is unaffected by additional milling, producing a uniform rate of oil absorption regardless of particle size. IMSIL is insoluble in water, abrasion resistant and non-conductive, and unaffected by the strongest acids and bases.

Nodular, irregularly shaped IMSIL particles produce excellent flatting and consistent batch to batch viscosity, gloss and sheen properties. Medium to coarser grades are effective matting agents in interior architectural coatings with excellent uniformity between 60 gloss and 85 sheen. IMSIL's uniform oil absorption properties also produce consistent gloss and sheen values regardless of substrate type or application technique. High Mohs hardness and low moisture properties also improve stain and burnish resistance.

IMSIL excels in industrial and maintenance coating formulations. Finely divided IMSIL grades offer superior chemical resistance, corrosion resistance and inter-coat adhesion in industrial primer applications. Coarser grades are utilized in industrial topcoats for flatting, chemical, corrosion and abrasion resistance. Coatings prepared for electrical insulating properties, including potting compounds, also employ IMSIL for superior insulating, dispersion and anti-settling properties.