| 摘要 |
FIELD: composition of cooling agent used for everyday and trade refrigerating equipment which provides cooling temperature minus 20 C. SUBSTANCE: composition comprises, mas.%: dicholoromonofluoro methane, 13-18; monochlorodifluoromethane, 65-70; 1-chloro-1,1-difluoroethane, 12-22. EFFECT: stable and prolonged operation of refrigerators. 2 cl, 5 dwg, 1 tbl
|
