| 摘要 |
The present invention pertains to ternary azeotrope and azeotrope-like composition including 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf), HF, and either 1,1,2,3-tetrachloropropene (TCP) or 1,1,1,2,2-pentafluoropropane (HFC-245cb). The present invention also relates to binary azeotropes of 2,3,3,3-tetrachloropropene and HF. Such azeotropic and azeotrope-like compositions are useful as intermediates in the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf). |
| 主权项 |
1. A ternary azeotrope or azeotrope-like composition consisting essentially of hydrogen fluoride, 2-chloro-3,3,3-trifluoropropene, and a third component selected from the group consisting of 1,1,2,3-tetrachloropropene and 1,1,1,2,2-pentafluoropropane, wherein
when the third component is 1,1,2,3-tetrachloropropene, hydrogen fluoride is present in an amount from about 3.0 to about 28.0 weight percent, 2-chloro-3,3,3-trifluoropropene is present in an amount from about 68.0 to about 93.0 weight percent, and 1,1,2,3-tetrachloropropene is present in an amount from about 2.5 to about 4.3 weight percent, and when the third component is 1,1,1,2,2-pentafluoropropane, hydrogen fluoride is present in an amount, from about 3.0 to about 22.0 weight percent, 2-chloro-3,3,3-trifluoropropene is present in an amount from about 65.0 to about 83.5 weight percent, and 1,1,1,2,2-pentafluoropropane is present in an amount from about 11.1 to about 15.5 weight percent.
|
