发明授权
US5387357A Azeotropic or azeotrope-like compositions of ammonia and hydrofluorocarbons 失效
共沸或类似共沸组合物的氨和氢氟碳化合物

Azeotropic or azeotrope-like compositions of ammonia and
hydrofluorocarbons
摘要:
Constant boiling azeotropic or azeotrope-like compositions of ammonia and 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, difluoromethane, pentafluoroethane or 1,1,1,2,3,3,3-heptafluoropropane are disclosed that are useful as refrigerants, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, expansion agents for polyolefins and polyurethanes and as power cycle working fluids.
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