Air Products and Chemicals has built a solid business out of gases and liquids. The company makes and distributes Industrial Gases and Materials Technologies. Industrial Gases’ primary products are atmospheric gases, process gases, and equipment for air separation. Materials Technologies’ primary products are performance materials and chemicals, such as epoxy amine curing agents, polyurethane catalysts, additives, and specialty surfactants, and electronics materials such as specialty gases, chemical mechanical planarization slurries, and specialty chemicals. In 2017 Air Products sold its Performance Materials business to Germany-based Evonik for $3.8 billion.