GB1437151A - - Google Patents
Info
- Publication number
- GB1437151A GB1437151A GB391274A GB391274A GB1437151A GB 1437151 A GB1437151 A GB 1437151A GB 391274 A GB391274 A GB 391274A GB 391274 A GB391274 A GB 391274A GB 1437151 A GB1437151 A GB 1437151A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hcl
- cucl
- ccl
- molten mixture
- effluent
- 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
- C07C19/00—Acyclic saturated compounds containing halogen atoms
- C07C19/08—Acyclic saturated compounds containing halogen atoms containing fluorine
- C07C19/10—Acyclic saturated compounds containing halogen atoms containing fluorine and chlorine
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/10—Preparation of halogenated hydrocarbons by replacement by halogens of hydrogen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/15—Preparation of halogenated hydrocarbons by replacement by halogens with oxygen as auxiliary reagent, e.g. oxychlorination
- C07C17/152—Preparation of halogenated hydrocarbons by replacement by halogens with oxygen as auxiliary reagent, e.g. oxychlorination of hydrocarbons
- C07C17/154—Preparation of halogenated hydrocarbons by replacement by halogens with oxygen as auxiliary reagent, e.g. oxychlorination of hydrocarbons of saturated hydrocarbons
Abstract
1437151 Chlorofluoromethanes LUMMUS CO 28 Jan 1974 [29 Jan 1973] 03912/74 Heading C2C Chlorofluoromethanes with or without residual hydrogen are produced by (a) contacting CH 4 with recycle HCl, a fresh chlorinating agent which is HCl and/or Cl 2 and a molten mixture comprising CuCl, CuCl 2 and CuO.CuCl 2 to produce a first effluent containing chlorinated methanes; (b) recovering from the effluent CHCl 3 and/or CCl 4 ; (c) hydrofluorinating the CHCl 3 and/or CCl 4 with HF to produce a second effluent comprising chlorofluoromethane and HCl; (d) recovering chlorofluoromethane and HCl and (e) recycling recovered HCl to step (a). The temperature in step (a) is preferably 700- 860‹ F. and Cl 2 is the best fresh chlorinating agent. The molten mixture optionally contains, as a melting point depressant, an alkali metal chloride or metal chloride of a metal heavier than Cu or Groups I, II, III and IV, e.g. KCl. The molten mixture preferably has 20-55% by weight of CuCl 2 and is formed in a separate reaction zone by contacting with O 2 . In the example CCl 4 from the chlorination step (a) is hydrofluorinated to CClF 2 and CCl 2 F 2 .
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US32770273A | 1973-01-29 | 1973-01-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1437151A true GB1437151A (en) | 1976-05-26 |
Family
ID=23277667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB391274A Expired GB1437151A (en) | 1973-01-29 | 1974-01-28 |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS49109303A (en) |
| CA (1) | CA1020956A (en) |
| DE (1) | DE2403310A1 (en) |
| FR (1) | FR2215406B1 (en) |
| GB (1) | GB1437151A (en) |
| NL (1) | NL7401119A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2627948C2 (en) * | 1976-06-22 | 1982-10-21 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Auto-pneumatic pressure gas switch |
| HUE050404T2 (en) * | 2012-03-02 | 2020-12-28 | Arkema Inc | Process for the removal of contaminant from a hydrochlorofluoroolefin by extractive distillation |
-
1974
- 1974-01-24 DE DE19742403310 patent/DE2403310A1/en not_active Withdrawn
- 1974-01-28 NL NL7401119A patent/NL7401119A/xx not_active Application Discontinuation
- 1974-01-28 CA CA191,094A patent/CA1020956A/en not_active Expired
- 1974-01-28 JP JP1109274A patent/JPS49109303A/ja active Pending
- 1974-01-28 GB GB391274A patent/GB1437151A/en not_active Expired
- 1974-01-29 FR FR7402951A patent/FR2215406B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2403310A1 (en) | 1974-08-08 |
| FR2215406A1 (en) | 1974-08-23 |
| CA1020956A (en) | 1977-11-15 |
| FR2215406B1 (en) | 1977-06-10 |
| NL7401119A (en) | 1974-07-31 |
| JPS49109303A (en) | 1974-10-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |