US5399795A
Expired / Lapsed
US
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Process for the preparation of 2-H-heptafluoropropane
Assignee: Solvay SA
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Filing: 1994-07-12
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Granted: 1995-03-21
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Expires: 2014-07-12
Abstract
Abstract The invention relates to a process for the preparation of 2-H-heptafluoropropane, wherein hexafluoropropene is reacted with hydrogen fluoride in the presence of a weakly basic ion exchanger whose reactive centers comprise tertiary amino groups.
Inventors
- 👤 Raimund Franz
- 👤 Gunter Siegemund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:00
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/07; C07C17/087
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
32 words
A process for the preparation of 2-H-heptafluoropropane from hexafluoropropene, wherein hexafluoropropene is reacted with hydrogen fluoride in the presence of a weakly basic ion exchanger whose reactive centers comprise tertiary amino groups.
Claim 2
Dependent Claim
32 words
A process for the preparation of 2-H-heptafluoropropane from hexafluoropropene, wherein hexafluoropropene is reacted with hydrogen fluoride in the presence of a weakly basic ion exchanger whose reactive centers comprise tertiary amino groups.
Claim 3
Dependent Claim
21 words
The process as claimed in claim 1, wherein hexafluoropropene and HF are used in a molar ratio of 0.9:1 to 1.1:1.
Claim 4
Dependent Claim
21 words
The process as claimed in claim 1, wherein the reaction is carried out at a temperature of 20° to 120° C.
Claim 5
Dependent Claim
21 words
The process as claimed in claim 1, wherein the reaction is carried out at a temperature of 30° to 90° C.
Claim 6
Dependent Claim
21 words
The process as claimed in claim 1, wherein the reaction is carried out at a temperature of 50° to 70° C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-03-20 | 1998-09-19 | 1999-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-03-20 | 2002-09-19 | 2003-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-03-20 | 2006-09-19 | 2007-03-21 | $7700.00 | Window Closed / Lapsed |