EP0773206A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Process for producing 1,1,1,2,3,3,3-heptafluoropropane
Assignee: Daikin Industries Ltd
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Filing: 1995-07-11
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Granted: —
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Expires: 2015-07-11
Abstract
Abstract A manufacturing method for 1,1,1,2,3,3,3-heptafluoropropane (HFC-227ea) wherein 1,1,1,2,3,3,3-heptafluoropropane (HFC-227ea) is obtained by reacting hexafluoropropene (HFP) with anhydrous hydrogen fluoride (HF) under the presence of antimony catalyst. A manufacturing method can be provided in which HFC-227ea can be obtained at high yield under the mild condition without producing by-products such as olefin compounds and so on.
Inventors
- 👤 Hirokazu Aoyama
- 👤 Noriaki Shibata
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 14:47
CPC Classifications
C; C07; C07C; C07C19/00; C07C19/08; C07C17/00; C07C17/07; C07C17/087; B; B01; B01J; B01J27/00; B01J27/06; B01J27/08; B01J27/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
22 words
A manufacturing method for 1,1,1,2,3,3,3-heptafluoropropane wherein 1,1,1,2,3,3,3-heptafluoropropane is obtained by reacting hexafluoropropene with anhydrous hydrogen fluoride under the presence of antimony catalyst.
Claim 2
Dependent Claim
21 words
A manufacturing method as defined by claim 1 wherein the antimony catalyst consists of pentavalent antimony, trivalent antimony or the mixture.
Claim 3
Dependent Claim
23 words
A manufacturing method as defined by claim 1 or 2 wherein the antimony catalyst consists of antimony pentafluoride, antimony trifluoride or the mixture.
Claim 4
Dependent Claim
27 words
A manufacturing method as defined by claim 3 wherein the mixing ratio of antimony pentafluoride and antimony trifluoride is antimony pentafluoride/antimony trifluoride ≦ 1 at molar ratio.
Claim 5
Dependent Claim
18 words
A manufacturing method as defined by claim 1 or 2 wherein the antimony catalyst consists of antimony pentafluoride.
Claim 6
Dependent Claim
21 words
A manufacturing method as defined by any one of claims 1 to 5 wherein the reaction is conducted in liquid phase.
Claim 7
Dependent Claim
25 words
A manufacturing method as defined by any one of claims 1 to 6 wherein the reaction is conducted by using anhydrous hydrogen fluoride as solvent.
Claim 8
Dependent Claim
44 words
A manufacturing method as defined by any one of claims 5 to 7 wherein hexafluoropropene and anhydrous hydrogen fluoride are added and reacted continuously to antimony pentafluoride, and produced 1,1,1,2,3,3,3-heptafluoropropane and unreacted hexafluoropropene and/or unreacted hydrogen fluoride are taken out from reaction system continuously.
Claim 9
Dependent Claim
27 words
A manufacturing method as defined by any one of claims 1 to 8 wherein the reaction is carried out at the temperature of not more than 100°C.
References Cited (Backward Citations)
No citation records indexed.
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