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US5574192A
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Process for the manufacture of 1,1,1,3,3-pentafluoropropane
Assignee: Honeywell International Inc
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Filing: 1995-08-25
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Granted: 1996-11-12
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Expires: 2015-08-25
Abstract
Abstract This invention is related to the preparation of hydrofluorocarbons (HFCs). Specifically, it relates to the fluorination of a compound of the formula: CF.sub.y Cl.sub.3-y CH.sub.2 CHF.sub.w Cl.sub.2-w wherein w=0 or 1, and y=0-3, with hydrogen fluoride in the presence of a fluorination catalyst under conditions sufficient to produce a compound of the formula CF 3 CH 2 CF 2 H. CF 3 CH 2 CF 2 H or HFC 245fa may be used as a blowing agent, a propellant, and a heat transfer agent.
Inventors
- 👤 Michael Vanderpuy
- 👤 Alagappan Thenappan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:45
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/20; C07C19/00; C07C19/08; C07C17/202; C07C17/206; C07C17/23; C07C17/26; C07C17/272; C07C17/278
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
54 words
A process for the manufacture of 1,1,1,3,3-pentafluoropropane which comprises: a) reacting a compound of the formula: CF.sub.y Cl.sub.3-y CH.sub.2 CHF.sub.w Cl.sub.2-w wherein w=0 or 1, and y=0-3, with hydrogen fluoride in the presence of a fluorination catalyst under conditions sufficient to produce a compound of the formula CF 3 CH 2 CF 2 H.
Claim 2
Dependent Claim
54 words
A process for the manufacture of 1,1,1,3,3-pentafluoropropane which comprises: a) reacting a compound of the formula: CF.sub.y Cl.sub.3-y CH.sub.2 CHF.sub.w Cl.sub.2-w wherein w=0 or 1, and y=0-3, with hydrogen fluoride in the presence of a fluorination catalyst under conditions sufficient to produce a compound of the formula CF 3 CH 2 CF 2 H.
Claim 3
Dependent Claim
47 words
The process of claim 1 wherein the fluorination catalyst is selected from the group consisting of pentavalent antimony halide, pentavalent niobium halide, pentavalent arsenic halide, pentavalent tantalum halide; pentavalent antimony mixed halide, pentavalent niobium mixed halide, pentavalent arsenic mixed halide, pentavalent tantalum mixed halide, and mixtures thereof.
Claim 4
Dependent Claim
14 words
The process of claim 2 wherein the fluorination catalyst is a pentavalent antimony halide.
Claim 5
Dependent Claim
23 words
The process of claim 2 wherein the fluorination catalyst has the formula SbCl n F 5-n , where n is 0 to 5.
Claim 6
Dependent Claim
72 words
The process of claim 2 wherein said compound of the formula CF y Cl 3-y CH 2 CHF w Cl 2-w is selected from the group consisting of CCl 3 CH 2 CHCl 2 , CF 3 CH 2 CHCl 2 , CFCl 2 CH 2 CHCl 2 , CF 2 ClCH 2 CHCl 2 , CFCl 2 CH 2 CHClF, CF 2 ClCH 2 CHFCl, and CF 3 CH 2 CHFCl.
Claim 7
Dependent Claim
72 words
The process of claim 4 wherein said compound of the formula CF y Cl 3-y CH 2 CHF w Cl 2-w is selected from the group consisting of CCl 3 CH 2 CHCl 2 , CF 3 CH 2 CHCl 2 , CFCl 2 CH 2 CHCl 2 , CF 2 ClCH 2 CHCl 2 , CFCl 2 CH 2 CHClF, CF 2 ClCH 2 CHFCl, and CF 3 CH 2 CHFCl.
Claim 8
Dependent Claim
29 words
The process of claim 5 wherein said compound of the formula CF y Cl 3-y CH 2 CHF w Cl 2-w is CCl 3 CH 2 CHCl 2 .
Claim 9
Dependent Claim
29 words
The process of claim 6 wherein said compound of the formula CF y Cl 3-y CH 2 CHF w Cl 2-w is CCl 3 CH 2 CHCl 2 .
Claim 10
Dependent Claim
46 words
The process of claim 8 wherein said CCl 3 CH 2 CHCl 2 is prepared by: reacting CCl 4 and vinyl chloride in the presence of a telomerization catalyst under conditions sufficient to produce a compound of the formula CCl 3 CH 2 CHCl 2 .
Claim 11
Dependent Claim
21 words
The process of claim 5 wherein said reaction is conducted at a temperature of from about 50° to about 175° C.
Claim 12
Dependent Claim
21 words
The process of claim 10 wherein said reaction is conducted at a temperature of from about 115° to about 155° C.
Claim 13
Dependent Claim
21 words
The process of claim 9 wherein said reaction is conducted at a temperature of from about 115° to about 155° C.
Claim 14
Dependent Claim
21 words
The process of claim 10 wherein said reaction is conducted for a period of from about 1 to about 25 hours.
Claim 15
Dependent Claim
21 words
The process of claim 13 wherein said reaction is conducted for a period of from about 2 to about 8 hours.
Claim 16
Dependent Claim
21 words
The process of claim 12 wherein said reaction is conducted for a period of from about 2 to about 8 hours.
Claim 17
Dependent Claim
40 words
The process of claim 13 wherein the amount of HF used is about 1 to about 15 times the stoichiometric amount of HF to said compound of the formula CF y Cl 3-y CH 2 CHF w Cl 2-w .
Claim 18
Dependent Claim
40 words
The process of claim 16 wherein the amount of HF used is about 6 to about 15 times the stoichiometric amount of HF to said compound of the formula CF y Cl 3-y CH 2 CHF w Cl 2-w .
Claim 19
Dependent Claim
40 words
The process of claim 15 wherein the amount of HF used is about 6 to about 15 times the stoichiometric amount of HF to said compound of the formula CF y Cl 3-y CH 2 CHF w Cl 2-w .
Claim 20
Dependent Claim
43 words
The process of claim 16 wherein said fluorination catalyst is present in an mount of from about 5 to about 50% by weight relative to the amount of compound of the formula CF y Cl 3-y CH 2 CHF w Cl 2-w present.
Claim 21
Dependent Claim
43 words
The process of claim 19 wherein said fluorination catalyst is present in an amount of from about 10 to about 25% by weight relative to the amount of compound of the formula CF y Cl 3-y CH 2 CHF w Cl 2-w present.
Claim 22
Dependent Claim
43 words
The process of claim 18 wherein said fluorination catalyst is present in an amount of from about 10 to about 25% by weight relative to the amount of compound of the formula CF y Cl 3-y CH 2 CHF w Cl 2-w present.
Claim 23
Dependent Claim
13 words
The process of claim 1 further comprising the step of recycling underfluorinated materials.
Claim 24
Dependent Claim
13 words
The process of claim 19 further comprising the step of recycling underfluorinated materials.
Claim 25
Dependent Claim
13 words
The process of claim 21 further comprising the step of recycling underfluorinated materials.
Claim 26
Dependent Claim
16 words
The process of claim 1 wherein the CF 3 CH 2 CF 2 H is recovered.
Claim 27
Dependent Claim
16 words
The process of claim 22 wherein the CF 3 CH 2 CF 2 H is recovered.
Claim 28
Dependent Claim
16 words
The process of claim 24 wherein the CF 3 CH 2 CF 2 H is recovered.
Claim 29
Dependent Claim
18 words
The process of claim 27 wherein said CF 3 CH 2 CF 2 H is recovered by distillation.
Claim 30
Dependent Claim
71 words
A process for the manufacture of 1,1,1,3,3-pentafluoropropane which comprises: a) reacting CCl 4 and vinyl chloride under conditions sufficient to produce a compound of the formula CCl 3 CH 2 CHCl 2 ; and b) reacting a compound of the formula CCl 3 CH 2 CHCl 2 with hydrogen fluoride in the presence of a fluorination catalyst to produce a compound of the formula CF 3 CH 2 CF 2 H.
Claim 31
Dependent Claim
71 words
A process for the manufacture of 1,1,1,3,3-pentafluoropropane which comprises: a) reacting CCl 4 and vinyl chloride under conditions sufficient to produce a compound of the formula CCl 3 CH 2 CHCl 2 ; and b) reacting a compound of the formula CCl 3 CH 2 CHCl 2 with hydrogen fluoride in the presence of a fluorination catalyst to produce a compound of the formula CF 3 CH 2 CF 2 H.
Claim 32
Dependent Claim
19 words
The process of claim 29 wherein said CCl 3 CH 2 CHCl 2 is recovered prior to step b.
Claim 33
Dependent Claim
15 words
The process of claim 30 wherein CF 3 CH 2 CF 2 H is recovered.
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| 3.5 Years (Year 4) | 1999-11-12 | 2000-05-13 | 2000-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-11-12 | 2004-05-13 | 2004-11-12 | $3760.00 | Window Closed / Lapsed |
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