This article focuses on matting agents based on SiO2 from precipitated and gel processes, which are marketed specifically for the UV coatings segment.
Matting agents, or additives to increase surface roughness, have evolved over the decades based on a variety of sources, and include ground polymeric types to those based on silicon dioxide. This article focuses on those based on SiO2 from precipitated and gel processes, which are marketed specifically for the UV coatings segment. This coatings segment presents its own unique challenges to achieve low-gloss finishes because there is typically no solvent, little film shrinkage, and varying line speeds and curing conditions.