초록 ▼

This invention relates to compositions that include at least one hydrocarbon and at least one fluorinated species. Such compositions may be used as refrigerants, cleaning agents, expansion agents for foams such as polyolefins and polyurethanes, aerosol propellants, heat transfer media, gaseous diele

This invention relates to compositions that include at least one hydrocarbon and at least one fluorinated species. Such compositions may be used as refrigerants, cleaning agents, expansion agents for foams such as polyolefins and polyurethanes, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, power cycle working fluids, polymerization media, particulate removal fluids, carrier fluids, buffing abrasive agents, displacement drying agents, among others.

대표청구항 ▼

An azeotrope or azeotrope-like composition consisting essentially of at least about 97 wt % of 1,1,1,2-tetrafluoroethane (HFC-134a) and less than about 3 wt % of 2-methylbutane that exists at a temperature of about 18.7°C. and a pressure of about 79.5 psia. An azeotrope or azeotrope-like composition

An azeotrope or azeotrope-like composition consisting essentially of at least about 97 wt % of 1,1,1,2-tetrafluoroethane (HFC-134a) and less than about 3 wt % of 2-methylbutane that exists at a temperature of about 18.7°C. and a pressure of about 79.5 psia. An azeotrope or azeotrope-like composition consisting essentially of at least about 94 wt % of 1,1,2,2-tetrafluoroethane (HFC-134) and less than about 6 wt % of n-pentane that exists at a temperature of about 18.7°C. and a pressure of about 63 psia. An azeotrope or azeotrope-like composition consisting essentially of at least about 93 wt % of 1,1,2,2-tetrafluoroethane (HFC-134) and less than about 7 wt % of 2-methylbutane that exists at a temperature of about 18.7°C. and a pressure of about 63 psia.