GB676691A - Improvements in or relating to the production of dichlorobutenes - Google Patents
Improvements in or relating to the production of dichlorobutenesInfo
- Publication number
- GB676691A GB676691A GB573549A GB573549A GB676691A GB 676691 A GB676691 A GB 676691A GB 573549 A GB573549 A GB 573549A GB 573549 A GB573549 A GB 573549A GB 676691 A GB676691 A GB 676691A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dichlorobutenes
- dichlorobutene
- coke
- oxygen
- added
- 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
- C07C17/013—Preparation of halogenated hydrocarbons by addition of halogens
- C07C17/02—Preparation of halogenated hydrocarbons by addition of halogens to unsaturated hydrocarbons
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1,2-Dichlorobutene-3 and 1,4-dichlorobutene-2 are made by passing a gaseous stream comprising at least two volumes of butadiene and one volume of chlorine, to either of which reactants has been added not more than 1 per cent of their total weight of oxygen or air, through a reacting zone at a temperature in the range 180-240 DEG C., containing a bed of finely-divided contact material such as coke, with a linear velocity to maintain the contact material evenly in suspension, isolating the dichlorobutenes and recycling unreacted butadiene. Advantageously the temperature is 220-230 DEG C. and 0.1-0.3 per cent of oxygen is added. Coke and sand of particle sizes 50-200, and 100-200 mesh B.S.S. are useful contact materials. When air is used purging of inert gases is necessary. An example is provided. Specifications 513,947, 518,697 and 669,338 are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB573549A GB676691A (en) | 1949-03-02 | 1949-03-02 | Improvements in or relating to the production of dichlorobutenes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB573549A GB676691A (en) | 1949-03-02 | 1949-03-02 | Improvements in or relating to the production of dichlorobutenes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB676691A true GB676691A (en) | 1952-07-30 |
Family
ID=9801643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB573549A Expired GB676691A (en) | 1949-03-02 | 1949-03-02 | Improvements in or relating to the production of dichlorobutenes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB676691A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1237096B (en) * | 1965-04-23 | 1967-03-23 | Basf Ag | Process for the preparation of 1, 4-dichlorobutene- (2) and 3, 4-dichlorobutene- (1) |
-
1949
- 1949-03-02 GB GB573549A patent/GB676691A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1237096B (en) * | 1965-04-23 | 1967-03-23 | Basf Ag | Process for the preparation of 1, 4-dichlorobutene- (2) and 3, 4-dichlorobutene- (1) |
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