| 摘要 |
A refrigerant composition for use as a direct replacement for R-12. The refrigerant composition comprises about 40 to 60 weight percent chlorodifluoromethane (R-22), about 30 to 50 weight percent 1-chloro-1,2,2,2-tetrafluoroethane (R-124), about 5 to 20 weight percent 1-chloro-1,1-difluoroethane (R-142b), and about 1 to 4 weight percent of a hydrocarbon component, such as isobutane (R-600a).
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