July 16, 2007 - Aerosol coatings are pressurized coatings that, like other coatings, consist of pigments and resins and solvents. Solid components, including but not limited to resins, pigments, fillers, plasticizers and extenders do not need to be included in this equation since the reactivity factor for all solids is zero. Enamel means a coating which cures by chemical cross-linking of its base resin and is not resoluble in its original solvent.