COOLANT COMPOSITION (VARIANTS) Russian patent published in 2001 - IPC

FIELD: refrigeration industry. SUBSTANCE: described is coolant composition comprising coolant and surfactant. Surfactant is isobutane derivative with halogen-containing organic substituents of general formula: or methane tricarboxylic acid nonaester of unsymmetrical structure of general formula: provided that at least R' is other than defined above, or derivative of halogenated ethers of fluorolefins and alcohols of general formula: or mixture of said compounds in effective amount. Coolant includes at least one compound selected from group consisting of dichlorodifluoromethane, 1,1,1,2-tetrafluoroethane, monochlorodifluoromethane, dichloromonofluoromethane, 1-chlorine-1,1-difluoroethane, 1,1-difluoroethane, 1,1,1,2- tetrafluorochloroethane, pentafluoroethane, trifluoromethane, octafluorocyclobutane, octafluoropropane, propane, isobutane, or mixture thereof. EFFECT: lower power consumption or refrigerating plant, higher wear resistance of piston pair of refrigerating plant and greater efficiency of compressor operation. 25 cl, 31 ex, 4 tbl