RU2219155C1 - 1,1,2,2,3,3,3-heptafluoropropane production process - Google Patents
1,1,2,2,3,3,3-heptafluoropropane production process Download PDFInfo
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- RU2219155C1 RU2219155C1 RU2002120969A RU2002120969A RU2219155C1 RU 2219155 C1 RU2219155 C1 RU 2219155C1 RU 2002120969 A RU2002120969 A RU 2002120969A RU 2002120969 A RU2002120969 A RU 2002120969A RU 2219155 C1 RU2219155 C1 RU 2219155C1
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- heptafluoropropane
- hydrogen fluoride
- chloropropane
- hexafluoro
- fluoride
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- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
FIELD: industrial organic synthesis. SUBSTANCE: 1,1,2,2,3,3,3-heptafluoropropane, used as component of mixed cooling agents, gaseous dielectric, propellant, and burning retardant, is obtained by reaction of 1,1,2,2,3,3-hexafluoro-1- chloropropane with excess hydrogen fluoride in presence of chromiummagnesium-fluoride catalyst at 250-450 C and contact time between 30 and 155 sec. Reaction product is freed of hydrogen fluoride and hydrogen chloride via consecutive countercurrent washing with water and aqueous alkali. EFFECT: increased conversion of raw material, improved selectivity regarding target product, and improved economical efficiency of process. 1 tbl, 12 ex
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RU2002120969A RU2219155C1 (en) | 2002-08-07 | 2002-08-07 | 1,1,2,2,3,3,3-heptafluoropropane production process |
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RU2002120969A RU2219155C1 (en) | 2002-08-07 | 2002-08-07 | 1,1,2,2,3,3,3-heptafluoropropane production process |
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RU2219155C1 true RU2219155C1 (en) | 2003-12-20 |
RU2002120969A RU2002120969A (en) | 2004-02-20 |
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RU2002120969A RU2219155C1 (en) | 2002-08-07 | 2002-08-07 | 1,1,2,2,3,3,3-heptafluoropropane production process |
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RU2002120969A (en) | 2004-02-20 |
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MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20090808 |