GB1359023A - Manufacture of perchlorofluoromethanes - Google Patents
Manufacture of perchlorofluoromethanesInfo
- Publication number
- GB1359023A GB1359023A GB5171471A GB5171471A GB1359023A GB 1359023 A GB1359023 A GB 1359023A GB 5171471 A GB5171471 A GB 5171471A GB 5171471 A GB5171471 A GB 5171471A GB 1359023 A GB1359023 A GB 1359023A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hydrocarbon
- moles
- starting material
- perchlorofluoromethanes
- recycled
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/361—Preparation of halogenated hydrocarbons by reactions involving a decrease in the number of carbon atoms
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1359023 Perchlorofluoromethanes IMPERIAL CHEMICAL INDUSTRIES Ltd 23 Oct 1972 [8 Nov 1971 (2)] 51714/71 and 51715/71 Heading C2C Perchlorofluoromethanesar e prepared by treating a C 3 aliphatic hydrocarbon or a C 1-4 halogenated aliphatic hydrocarbon, in which all or some of the H atoms in the hydrocarbon have been replaced by Cl or F or a combination thereof (other than a fully-fluorinated hydrocarbon), with HF and Cl 2 in the absence of a catalyst at 525-700‹ C. Preferably the starting material is a partially-chlorinated C 1 hydrocarbon and 1À5- 5 moles at both HF and Cl 2 are used per mole of starting material. Alternatively a C 3 hydrocarbon may be treated with 3-15 moles of HF and 5-12 moles of Cl 2 per mole of starting material. Chloro-, chlorofluoro- or fluorocarbon by-products of the process, especially perchloroethylene, may be recycled. In one Example a mixture of C 3 hydrocarbons is halogenated to CF 2 Cl 2 , CFCl 3 and CF 3 Cl with the by-products, e.g. CCl 4 , C 2 Cl 4 , being recycled.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE791038D BE791038A (en) | 1971-11-08 | PRODUCTION OF HALOGENOUS HYDROCARBONS | |
| GB5171471A GB1359023A (en) | 1971-11-08 | 1971-11-08 | Manufacture of perchlorofluoromethanes |
| NL7214714A NL7214714A (en) | 1971-11-08 | 1972-10-31 | |
| AU48392/72A AU4839272A (en) | 1971-11-08 | 1972-11-01 | Manufacture of halogenated hydrocarbons |
| FR7239383A FR2159333A1 (en) | 1971-11-08 | 1972-11-07 | |
| JP11081872A JPS4856609A (en) | 1971-11-08 | 1972-11-07 | |
| DE19722254670 DE2254670A1 (en) | 1971-11-08 | 1972-11-08 | PROCESS FOR THE PRODUCTION OF HALOGENATED HYDROCARBONS |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5171471A GB1359023A (en) | 1971-11-08 | 1971-11-08 | Manufacture of perchlorofluoromethanes |
| GB5171571 | 1971-11-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1359023A true GB1359023A (en) | 1974-07-03 |
Family
ID=26266925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5171471A Expired GB1359023A (en) | 1971-11-08 | 1971-11-08 | Manufacture of perchlorofluoromethanes |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS4856609A (en) |
| AU (1) | AU4839272A (en) |
| BE (1) | BE791038A (en) |
| DE (1) | DE2254670A1 (en) |
| FR (1) | FR2159333A1 (en) |
| GB (1) | GB1359023A (en) |
| NL (1) | NL7214714A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7151197B2 (en) * | 2001-09-28 | 2006-12-19 | Great Lakes Chemical Corporation | Processes for purifying chlorofluorinated compounds and processes for purifying CF3CFHCF3 |
| US7216722B2 (en) | 2003-04-17 | 2007-05-15 | Great Lakes Chemical Corporation | Fire extinguishing mixtures, methods and systems |
| CN114573417A (en) * | 2021-12-23 | 2022-06-03 | 西安近代化学研究所 | Preparation method of tetrafluoromethane and tetrafluoromethane mixed gas |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0678494B1 (en) * | 1994-04-21 | 1998-06-10 | Albemarle Corporation | Process for the preparation of bromochloro-alkanes |
-
0
- BE BE791038D patent/BE791038A/en unknown
-
1971
- 1971-11-08 GB GB5171471A patent/GB1359023A/en not_active Expired
-
1972
- 1972-10-31 NL NL7214714A patent/NL7214714A/xx unknown
- 1972-11-01 AU AU48392/72A patent/AU4839272A/en not_active Expired
- 1972-11-07 FR FR7239383A patent/FR2159333A1/fr not_active Withdrawn
- 1972-11-07 JP JP11081872A patent/JPS4856609A/ja active Pending
- 1972-11-08 DE DE19722254670 patent/DE2254670A1/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7151197B2 (en) * | 2001-09-28 | 2006-12-19 | Great Lakes Chemical Corporation | Processes for purifying chlorofluorinated compounds and processes for purifying CF3CFHCF3 |
| US7216722B2 (en) | 2003-04-17 | 2007-05-15 | Great Lakes Chemical Corporation | Fire extinguishing mixtures, methods and systems |
| US7223351B2 (en) | 2003-04-17 | 2007-05-29 | Great Lakes Chemical Corporation | Fire extinguishing mixtures, methods and systems |
| CN114573417A (en) * | 2021-12-23 | 2022-06-03 | 西安近代化学研究所 | Preparation method of tetrafluoromethane and tetrafluoromethane mixed gas |
| CN114573417B (en) * | 2021-12-23 | 2023-12-12 | 西安近代化学研究所 | Preparation method of tetrafluoromethane and tetrafluoromethane mixed gas |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2159333A1 (en) | 1973-06-22 |
| JPS4856609A (en) | 1973-08-09 |
| DE2254670A1 (en) | 1973-05-24 |
| AU4839272A (en) | 1974-05-02 |
| BE791038A (en) | 1973-05-07 |
| NL7214714A (en) | 1973-05-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |