111- 11- Refrigerant composition containing difluoromethane 111-trifluoroethane and 11-difluoroethane

摘要

PURPOSE: Provided is a coolant composition containing difluoromethane, 1,1,1-trifluoroethane, and 1,1-difluoroethane, which is substituted for chlorodifluoromethane(CHClF2, HCFC-22) and dose not contain the material destroying an ozone layer. CONSTITUTION: The coolant composition comprises 20-70wt% of the difluoromethane(CH2F2, HFC-32), 10-50wt% of the 1,1,1-trifluoroethane(CH3CF3, HFC-143a), 10-40wt% of the 1,1-difluoroethane(CH3CHF2, HFC-152a), and 10-30wt% of 1,1,1,2,3,3,3-heptafluoropropane(CF3CHFCF3, HFC-227ea) or 5-15wt% of isobutane(CH(CH3)2CH3, R-600a). Or the coolant composition comprises 30-70wt% of the difluoromethane(CH2F2, HFC-32), 10-40wt% of the 1,1,1-trifluoroethane(CH3CF3, HFC-143a), 10-40wt% of the 1,1-difluoroethane(CH3CHF2, HFC-152a), and 10-20wt% of 1,1,1,2,3,3-hexafluoropropane(CHF2CHFCF3, HFC-236ea).