Azeotropic compositions of perfluoroethane and trifluoromethane, or oxide or nitrous oxide, or carbon dioxide, or fluoromethane

摘要

Azeotropic or azeotrope-like compositions comprising admixtures of effective amounts of perfluoroethane and nitrous oxide, or carbon dioxide, or fluoromethane to form an azeotropic or azeotrope-like composition. Such compositions are used as cleaning agents, expansion agents for polyolefins and polyurethanes, refrigerants, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, power cycle working fluids, polymerization media, particulate removal fluids, carrier fluids, buffing abrasive agents, and displacement drying agents.