Claims
- 1. An azeotropic composition consisting essentially of from about 52 to 83 mole percent HF and from about 48 to 17 mole percent CHF.sub.2 CF.sub.2 CH.sub.2 F, which forms an azeotrope boiling at a temperature between about -10.degree. C. and 130.degree. C. at a pressure between about 43 kPa and 3385 kPa.
- 2. The azeotrope composition of claim 1 produced by a process comprising the steps of reacting HF with a compound of the formula HCF.sub.2 CF.sub.2 CH.sub.2 OY, where Y is selected from the group consisting of --(CO)Cl and --SO.sub.2 Cl in the vapor phase over a catalyst consisting essentially of aluminum fluoride, fluorided alumina, or mixtures thereof, to produce HCF.sub.2 CF.sub.2 CH.sub.2 F; and recovering a portion of the HCF.sub.2 CF.sub.2 CH.sub.2 F as an azeotropic composition of HCF.sub.2 CF.sub.2 CH.sub.2 F and HF.
- 3. An azeotrope composition consisting essentially of from about 52 to 83 mole percent HF and from about 48 to 17 mole percent CHF.sub.2 CF.sub.2 CH.sub.2 F, which forms an azeotrope boiling at a temperature between about -10.degree. C. and 130.degree. C. at a pressure between about 43 kPa and 3385 kPa; said azeotropic composition including a composition selected from the group consisting of a composition consisting essentially of about 76 mole percent HF and about 24 mole percent HCF.sub.2 CF.sub.2 CH.sub.2 F, a composition consisting essentially of about 52 mole percent HF and48 mole percent HCF.sub.2 CF.sub.2 CH.sub.2 F, and a composition consisting essentially of about 83 mole percent HF and 17 mole percent HCF.sub.2 CF.sub.2 CH.sub.2 F.
- 4. An azeotropic composition consisting essentially of about 76 mole percent HF and about 24 mole percent CHF.sub.2 CF.sub.2 CH.sub.2 F, which forms an azeotrope boiling at a temperature of about 20.degree. C. and a pressure of about 154 kPa.
- 5. The azeotropic composition of claim 4 produced by a process comprising the steps of reacting HF with a compound of the formula HCF.sub.2 CF.sub.2 CH.sub.2 OY, where Y is selected from the group consisting of --C(O)Cl and --SO.sub.2 Cl in the vapor phase over a catalyst consisting essentially of aluminum fluoride, fluorided aluminum, or mixtures thereof, to produce HCF.sub.2 CF.sub.2 CH.sub.2 F; and recovering a portion of HCF.sub.2 CF.sub.2 CH.sub.2 F as an azeotropic composition of HCF.sub.2 CF.sub.2 CH.sub.2 F and HF.
Parent Case Info
This application is a continuation-in-part of U.S. patent application Ser. No. 08/066,448, filed May 24, 1993, which issued as U.S. Pat. No. 5,274,190.
US Referenced Citations (10)
Foreign Referenced Citations (1)
Number |
Date |
Country |
6585790 |
May 1991 |
AUX |
Continuation in Parts (1)
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Number |
Date |
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Parent |
66448 |
May 1993 |
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