(JP6506015-W)      Refrigerant compsns. comprising: (1) 10-90 wt.% of 1,1,1-trifluoroethane (HFC-143a), difluoromethane (HFC-152a), propane or mixts. (2) 1-50 wt.% of a 1-3C hydrofluorocarbon, a 1-3C fluorocarbon, an inorganic cpd. or mixts. of b.pt. -90 to -50 deg.C. (3) 1-50 wt.% of a 1-3C hydrofluorocarbon other than HFC-143a, of b.pt. -90 to -50 deg.C.    The compsns. have a vapour pressure equiv. to that of chlorodifluoromethane and the b.pts. are at atmospheric pressure. A method for producing refrigeration by condensing the refrigerant compsns. and then evaporating them in the vicinity of a body to be cooled.    USE/ADVANTAGE -   The compsns. are useful for refrigeration, air-conditioning and in heat pumps and the relative amts. of the components can be selected to provide non-flammable compsns. The compsns. have zero ozone depletion potential and low toxicity; only small changes in properties are found in substantial liq. or vapour losses    (US5736063-A)      Refrigerant compsns. comprising: (1) 10-90 wt.% of 1,1,1-trifluoroethane (HFC-143a), difluoromethane (HFC-32), propane or mixts. (2) 1-50 wt.% of a 1-3C hydrofluorocarbon, a 1-3C fluorocarbon, an inorganic cpd. or mixts. of b.pt. -90 to -50 deg.C. (3) 1-50 wt.% of a 1-3C hydrofluorocarbon other than HFC-143a, of b.pt. -50 to -10 deg.C.    The compsns. have a vapour pressure equiv. to that of chlorodifluoromethane and the b.pts. are at atmospheric pressure. A method for producing refrigeration by condensing the refrigerant compsns. and then evaporating them in the vicinity of a body to be cooled.    USE/ADVANTAGE -   The compsns. are useful for refrigeration, air-conditioning and in heat pumps and the relative amts. of the components can be selected to provide non-flammable compsns. The compsns. have zero ozone depletion potential and low toxicity; only small changes in properties are found in substantial liq. or vapour loss    (US6113803-A)      Refrigerant compsns. comprising: (1) 10-90 wt.% of 1,1,1-trifluoroethane (HFC-143a), difluoromethane (HFC-32), propane or mixts. (2) 1-50 wt.% of a 1-3C hydrofluorocarbon, a 1-3C fluorocarbon, an inorganic cpd. or mixts. of b.pt. -90 to -50 deg.C. (3) 1-50 wt.% of a 1-3C hydrofluorocarbon other than HFC-143a, of b.pt. -50 to -10 deg.C.    The compsns. have a vapour pressure equiv. to that of chlorodifluoromethane and the b.pts. are at atmospheric pressure. A method for producing refrigeration by condensing the refrigerant compsns. and then evaporating them in the vicinity of a body to be cooled.    USE/ADVANTAGE -   The compsns. are useful for refrigeration, air-conditioning and in heat pumps and the relative amts. of the components can be selected to provide non-flammable compsns. The compsns. have zero ozone depletion potential and low toxicity; only small changes in properties are found in substantial liq. or vapour loss