Spherical Precipitated Silica; Next Generation Particle Morphology for Performance in Coatings

Precipitated silicon dioxide and sodium aluminosilicates have been used in paints and coatings applications to provide matting, opacity (titanium dioxide extension) and rheology performance. Recently, the Silica Business Unit (SBU) of Huber Engineered Materials (HEM) has taken the next technical step forward with the development of spherical precipitated silicon dioxide and sodium aluminosilicate products. The spherical materials are produced by a new patented manufacturing process that allows for a unique spherical particle morphology and also provides enhanced particle size and distribution control. In coatings applications, these new spherical particles have been found to exhibit performance attributes that are not possible with traditional precipitated silicas and silicates. The spherical products provide outstanding burnish and scrub resistance in architectural coatings while also delivering matting performance without negatively impacting color saturation. In this presentation, the physical properties and coatings performance of the precipitated spherical silica and silicate products are discussed.


Ronald Romer is the Applied Technology Manager for Huber Engineered Materials. Ronald holds a BS Chemistry degree from Delaware Valley University, plus multiple certifications in statistics including ASQ CSSBB. He has 35 years of coatings industry experience specializing in dispersion science, color/opacity and extensive field application testing of industrial coatings. He has formulated industrial and architectural coatings for OEM and consumer markets with companies including Sherwin Williams, Rohm and Haas, Millennium TiO2 and PPG.