| 摘要 |
FIELD: domestic, trade and industrial equipment. SUBSTANCE: composition comprises, vol.%: pentafluoroethane, 15-70; heptafluoropropane, 20- 70; one of compounds selected from group consisting of propane, butane, isobutane, difluoroethane, hexafluoropropane, tetrafluoroethane, octafluorocyclobutane, 1-20. Mixed cooling agent is more universal and promising than those known in the art, particularly cooling agent 12 widely used in refrigeration industry. EFFECT: improved composition of the cooling agent. 3 tbl |
