GB489576A - Improvements relating to the production of glycols - Google Patents
Improvements relating to the production of glycolsInfo
- Publication number
- GB489576A GB489576A GB274137A GB274137A GB489576A GB 489576 A GB489576 A GB 489576A GB 274137 A GB274137 A GB 274137A GB 274137 A GB274137 A GB 274137A GB 489576 A GB489576 A GB 489576A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tower
- per cent
- solution
- mixture
- olefines
- 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
- C07D—HETEROCYCLIC COMPOUNDS
- C07D301/00—Preparation of oxiranes
- C07D301/02—Synthesis of the oxirane ring
- C07D301/24—Synthesis of the oxirane ring by splitting off HAL—Y from compounds containing the radical HAL—C—C—OY
- C07D301/26—Y being hydrogen
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/64—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by simultaneous introduction of -OH groups and halogens
- C07C29/66—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by simultaneous introduction of -OH groups and halogens by addition of hypohalogenous acids, which may be formed in situ, to carbon-to-carbon unsaturated bonds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Epoxy Compounds (AREA)
Abstract
Chlorhydrin solutions of relatively high concentration, up to 15-20 per cent, are produced continuously by reacting gaseous chlorine, a mixture of olefines and water together simultaneously, the chlorine, olefines and one or more inert gas diluents being passed into a flowing stream of cold water. Suitable diluents are saturated hydrocarbons, and these may be obtained mixed with the olefines by the vapour phase cracking process of the petroleum industry. The olefine content of the gases may be as low as 10 per cent. In an example, " gipo " gas of specified composition is passed through porous thimbles of alundum or sintered glass into a tower into which water at 5-20 DEG C. is continuously fed at the top, the reaction products being withdrawn at the bottom. Chlorine is fed into the tower through porous thimbles at a short distance above the hydrocarbon gas inlet. The saturated hydrocarbons pass out at the top of the tower. The feed of the hydrocarbon gases is regulated so that ethylene, which reacts more slowly than propylene and butylene, is completely reacted. The tower may be replaced by one or more shorter columns provided with stirring means. The aqueous solution produced is steam distilled. Olefine chlorides are first removed, and then an azeotropic mixture of chlorhydrins and water boiling at about 96 DEG C. When the concentration of the chlorhydrin solution obtained from the tower is as high as 15 per cent, the distillation operation may be omitted. The chlorhydrin solution is run into hot milk of lime at above 80 DEG C. or a suspension of the oxides, hydroxides or carbonates of the alkaline earths or of magnesium, and the resulting olefine oxides are passed into a 0,5 per cent solution of sulphuric or other mineral acid below 50 DEG C., preferably at 20 DEG C. The glycols produced are separated from the acid by precipitating it with lime, marble, limestone or other suitable compound. The solution is filtered, evaporated and if desired, distilled. The glycol mixture is suitable as an antifreeze mixture in motor cars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB274137A GB489576A (en) | 1937-01-29 | 1937-01-29 | Improvements relating to the production of glycols |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB274137A GB489576A (en) | 1937-01-29 | 1937-01-29 | Improvements relating to the production of glycols |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB489576A true GB489576A (en) | 1938-07-29 |
Family
ID=9745001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB274137A Expired GB489576A (en) | 1937-01-29 | 1937-01-29 | Improvements relating to the production of glycols |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB489576A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0016433A1 (en) * | 1979-03-19 | 1980-10-01 | BASF Aktiengesellschaft | Process for the continuous production of propylene chlorohydrins |
-
1937
- 1937-01-29 GB GB274137A patent/GB489576A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0016433A1 (en) * | 1979-03-19 | 1980-10-01 | BASF Aktiengesellschaft | Process for the continuous production of propylene chlorohydrins |
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