Patent US2220666A successfully refreshed from Google Patents.
EP0522639B1
Expired / Lapsed
EP
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Process for the preparation of 1-chloro-1,1,3,3,3-pentafluoropropane and of 1,1,1,3,3,3-hexafluoropropane
Assignee: Solvay SA
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Filing: 1992-07-02
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Granted: 1995-04-26
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Expires: 2012-07-02
Abstract
No abstract record available.
Inventors
- 👤 Pascal Pennetreau
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 01:55
CPC Classifications
C; C07; C07C; C07C19/00; C07C19/08; C07C17/00; C07C17/093; C07C17/20; C07C17/202; C07C17/206; C07C17/26; C07C17/272; C07C17/278
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
25 words
Process for preparing 1-chloro-1,1,3,3,3-pentafluoropropane and 1,1,1,3,3,3-hexafluoropropane, characterised in that 1,1,1,3,3,3-hexachloropropane is reacted in the liquid phase with hydrogen fluoride, in the presence of a catalyst.
Claim 2
Dependent Claim
37 words
Process according to Claim 1, characterised in that the catalyst is chosen from derivatives of metals of groups IIIa, IVa and b, Va and b and VIb of the Periodic Table of the elements and their mixtures.
Claim 3
Dependent Claim
20 words
Process according to Claim 2, characterised in that the derivatives of the metals are chosen from chlorides, fluorides and chlorofluorides.
Claim 4
Dependent Claim
23 words
Process according to Claim 1, characterised in that the catalyst is chosen from tin and antimony chlorides, fluorides and chlorofluorides and their mixtures.
Claim 5
Dependent Claim
13 words
Process according to Claim 4, characterised in that the catalyst is antimony pentachloride.
Claim 6
Dependent Claim
26 words
Process according to Claim 1, characterised in that the catalyst is used in the ratio of 0.005 to 0.1 mol of catalyst per mol of 1,1,1,3,3,3-hexachloropropane.
Claim 7
Dependent Claim
27 words
Process according to Claim 1, characterised in that the mole ratio of hydrogen fluoride to the 1,1,1,3,3,3-hexachloropropane used is at least 4 and does not exceed 20.
Claim 8
Dependent Claim
26 words
Process according to Claim 1, characterised in that the temperature at which the reaction is carried out is at least 50°C and does not exceed 150°C.
Claim 9
Dependent Claim
28 words
Process according to Claim 1, characterised in that the pressure at which the reaction is carried out is at least 2 bar and does not exceed 50 bar.
Claim 10
Dependent Claim
28 words
Process according to Claim 1, characterised in that the 1,1,1,3,3,3-hexachloropropane used is obtained by reacting vinylidene chloride wish carbon tetrachloride in the presence of cuprous chloride and acetonitrile.
References Cited (Backward Citations)
No citation records indexed.
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