| 摘要 |
A novel ternary mixture of refrigerants that can be drop-in substituted for dichlorodifluoromethane (R-12), but that, unlike dichlorodifluoromethane, causes very little ozone damage, comprising approximately 2 to 20 % by weight isobutane (R-600a), approximately 41 to 71% by weight chlorodifluoromethane (R-22), and approximately 21 to 51 by weight chlorodifluoroethane (R-142b), with the weight percentages being of the overall mixture.
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