Paints, lacquers, and varnishes

Abstract

Paints can be liquids or powders that are applied to surfaces to provide dry coating for either protective or decorative purposes. The basic constituents of paints are binders, solvents, pigments, and additives. Varnishes have the same composition, but lack pigments. Lacquer is a clear or colored varnish that produces a hard, durable finish and can be further polished as required. Water-based paints have now replaced solvent-based paints whenever possible. Using only water-based paints does not increase the risk of hand dermatitis. Occasional irritant dermatitis from various causes is probably common, but allergic dermatitis is the most significant. A sensitized worker may be obliged to change jobs. Synthetic resins, especially epoxy resin compounds, di- and tri-isocyanates, as well as acrylates, methacrylates, and biocides are the most common causes of sensitization. Protection includes appropriate clothing: gloves, boots or shoes, safety helmets, respiratory protective equipment, and eye protectors. Careful working methods and knowledge of the irritating and sensitizing properties of paints, lacquers, and varnishes are also essential. Special instructions are necessary when using highly sensitizing paints, lacquers, and varnishes containing epoxy or acrylic compounds. Special instruction should be available for cases of overflow of containers, spray guns, or splashes or spills on clothing or the skin.