COOLING AGENT COMPOSITION Russian patent published in 2002 - IPC

FIELD: refrigeration engineering. SUBSTANCE: composition contains fluorine-containing 55-87 vol. % of chladone (trifluoromethane, tetrafluoromethane, trifluoroiodomethane, pentafluoroethane, pentafluoroiodoethane, heptafluoropropane, octafluorocyclobutane, or perfluorobutane) and 13-45 vol.% of domestic gas (as hydrocarbon mixture). Composition may additionally contain no more than 2 vol.% of aromatic compound, preferably toluene. EFFECT: reduced corrosion activity and enabled use in refrigeration equipment operated at different temperatures. 3 cl, 1 tbl