| 摘要 |
PROBLEM TO BE SOLVED: To provide compositions which possess properties that have heretofore been associated with CFCs, including chemical stability, low toxicity, nonflammability and efficiency in-use, while at the same time substantially reducing or eliminating the deleterious ozone depletion potential of such compositions.SOLUTION: A composition comprises 1-40 wt.% of carbon dioxide (CO2) and 60-99 wt.% of one or more compounds of the formula I defined by XCFzR3-z, where X is a C2 or a C3 unsaturated, substituted or unsubstituted, alkyl radical; and each R is independently halogen or H; and z is 1 to 3. |
