The U.S. Court of Appeals rejected a legal challenge to the EPA’s national VOC rule on architectural and industrial-maintenance coatings — the so-called “AIM” rule — mounted by a group of coatings manufacturers.
The best chemistry for such clearcoats has proven to be a highly reactive polyurethane system, which is formulated as two components that are mixed together in precise proportions immediately before being applied.
This article discusses the development of a high-performance, environmentally friendly glass coating system based on a hydroxy-functional polyurethane dispersion and an aqueous blocked polyisocyanate crosslinker.