GB469421A - Improvements in or relating to the manufacture of fluorohydrocarbons - Google Patents
Improvements in or relating to the manufacture of fluorohydrocarbonsInfo
- Publication number
- GB469421A GB469421A GB235836A GB235836A GB469421A GB 469421 A GB469421 A GB 469421A GB 235836 A GB235836 A GB 235836A GB 235836 A GB235836 A GB 235836A GB 469421 A GB469421 A GB 469421A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fluoride
- hydrogen fluoride
- products
- gases
- reaction
- 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
- C07C17/07—Preparation of halogenated hydrocarbons by addition of hydrogen halides
- C07C17/08—Preparation of halogenated hydrocarbons by addition of hydrogen halides to unsaturated hydrocarbons
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Hydrogen fluoride is reacted with acetylene in the presence of mercuric compounds and/or active carbon. Mercuric oxide, chloride or fluoride may be supported on carriers, for example activated charcoal. The hydrogen fluoride may be anhydrous or in the form of an aqueous solution. The reaction products are mainly vinyl fluoride or difluorethanes, chiefly ethylidene fluoride, and can be separated by fractional distillation. A mixture of gaseous hydrogen fluoride and acetylene may be passed over the catalyst, such as the product obtained by mixing granulated activated charcoal with a suspension of mercuric oxide and drying, in an iron vessel. The reaction heat raises the temperature, for example to 20--40 DEG C., which can be regulated by varying the quantity and composition of the circulating gases, or by adding indifferent gases. Elevated temperatures can, however, be used to start the reaction. Part of the gases leaving the catalyst may be removed and the fluorohydrocarbons separated, or the latter may be removed directly with suitable solvents. The products are suitable as refrigerants and for the manufacture of polymerization products.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB235836A GB469421A (en) | 1936-01-24 | 1936-01-24 | Improvements in or relating to the manufacture of fluorohydrocarbons |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB235836A GB469421A (en) | 1936-01-24 | 1936-01-24 | Improvements in or relating to the manufacture of fluorohydrocarbons |
Publications (1)
Publication Number | Publication Date |
---|---|
GB469421A true GB469421A (en) | 1937-07-26 |
Family
ID=9738148
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB235836A Expired GB469421A (en) | 1936-01-24 | 1936-01-24 | Improvements in or relating to the manufacture of fluorohydrocarbons |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB469421A (en) |
-
1936
- 1936-01-24 GB GB235836A patent/GB469421A/en not_active Expired
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