solventbased

Solvent-based, often referred to as solventborne in industry contexts, describes products and formulations that rely on organic solvents to dissolve binders and carry additives. The solvent evaporates during drying or curing, leaving a solid film on the substrate. Solvent-based formulations are common in paints, varnishes, primers, inks, and some adhesives and sealants. Binders include alkyds, polyurethanes, epoxies, and acrylics; solvents can be aliphatic hydrocarbons, aromatics, esters, ketones, and alcohols. They can be single-component systems or two-component systems that cure through chemical cross-linking.

Advantages of solvent-based products include strong solvency power, good adhesion and early hardness, high gloss, and broad substrate compatibility. They often provide fast initial dry times under a range of conditions. Disadvantages include higher volatile organic compound (VOC) emissions, greater flammability, odor, and potential health and safety concerns. They require ventilation, solvent management, and proper storage and disposal, along with compliance with local VOC regulations.

Environmental and regulatory trends increasingly favor low-VOC or water-based alternatives, prompting reformulations and the use of high-solid or low-emission solvent-based products. Applications span automotive refinishing, architectural coatings, wood finishes, marine coatings, and industrial inks. Safety considerations include flammable storage, appropriate personal protective equipment, and monitoring of fumes in work areas.