GB1347633A - Production of 2-chlorobutadiene-1,3 - Google Patents
Production of 2-chlorobutadiene-1,3Info
- Publication number
- GB1347633A GB1347633A GB3261272A GB3261272A GB1347633A GB 1347633 A GB1347633 A GB 1347633A GB 3261272 A GB3261272 A GB 3261272A GB 3261272 A GB3261272 A GB 3261272A GB 1347633 A GB1347633 A GB 1347633A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alcohol
- reaction zone
- chlorobutadiene
- aqueous
- distilling
- 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
- C07C21/00—Acyclic unsaturated compounds containing halogen atoms
- C07C21/02—Acyclic unsaturated compounds containing halogen atoms containing carbon-to-carbon double bonds
- C07C21/19—Halogenated dienes
- C07C21/20—Halogenated butadienes
- C07C21/21—Chloroprene
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/25—Preparation of halogenated hydrocarbons by splitting-off hydrogen halides from halogenated hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/38—Separation; Purification; Stabilisation; Use of additives
- C07C17/383—Separation; Purification; Stabilisation; Use of additives by distillation
- C07C17/386—Separation; Purification; Stabilisation; Use of additives by distillation with auxiliary compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1347633 2-Chloro-butadiene-1,3 KNAPSACK AG 12 July 1972 [7 Aug 1971] 32612/72 Heading C2C A process for the manufacture of 2-chlorobutadiene-(1,3) by the dehydrochlorination of 3,4-dichlorobutene-(1) in an aqueous solution of an alkali metal or alkaline earth metal hydroxide in the presence of an alcohol having between 2 and 4 carbon atoms at elevated temperature, and distilling off the resulting 2- chlorobutadiene- (1,3), comprises continuously supplying a reaction zone with 3,4-dichlorobutene-(1), the alcohol and the aqueous hydroxide solution and heating them to boiling therein while passing a stream of inert gas therethrough; distilling off from the reaction zone the resulting 2-chlorobutadiene-(1,3) and fractionating it until pure; retaining in the reaction zone a reaction mixture which commences to separate into two layers comprising an upper layer and a lower layer; continuously removing aqueous alcohol in excess from said upper layer through an overflow and recovering the alcohol; continuously removing through the bottom of the reaction zone the said lower layer consisting of an aqueous/alkaline solution of unreacted hydroxide, chloride salt and minor proportions of alcohol; distilling the said lower layer so as to concentrate it; isolating the precipitated chloride salt, and recovering the concentrated liquor.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712139729 DE2139729A1 (en) | 1971-08-07 | 1971-08-07 | PROCESS FOR THE PREPARATION OF 2-CHLOROBUTADIEN-1,3 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1347633A true GB1347633A (en) | 1974-02-27 |
Family
ID=5816164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3261272A Expired GB1347633A (en) | 1971-08-07 | 1972-07-12 | Production of 2-chlorobutadiene-1,3 |
Country Status (12)
| Country | Link |
|---|---|
| JP (1) | JPS4826710A (en) |
| BE (1) | BE786986A (en) |
| CA (1) | CA981700A (en) |
| CS (1) | CS175436B2 (en) |
| DD (1) | DD98506A5 (en) |
| DE (1) | DE2139729A1 (en) |
| FR (1) | FR2148517B1 (en) |
| GB (1) | GB1347633A (en) |
| IE (1) | IE36505B1 (en) |
| IT (1) | IT965963B (en) |
| NL (1) | NL7210794A (en) |
| SU (1) | SU512694A3 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1980001912A1 (en) * | 1979-03-06 | 1980-09-18 | Bp Chemicals Limited | Recovery of alkanol in the production of chloroprene |
| WO1980001911A1 (en) * | 1979-03-06 | 1980-09-18 | Bp Chem Int Ltd | Recovery of alkanol in chloroprene production |
| WO1980001910A1 (en) * | 1979-03-06 | 1980-09-18 | Bp Chem Int Ltd | Recovery of alkanol from bleed streams in chloroprene production |
| US4629816A (en) * | 1982-03-11 | 1986-12-16 | Bayer Aktiengesellschaft | Process for the production of 2,3-dichlorobutadiene-(1,3) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5916981B2 (en) * | 1973-12-29 | 1984-04-18 | 曙ブレ−キ工業 （株） | How to control anti-skid device |
| JPS6030582B2 (en) * | 1974-06-28 | 1985-07-17 | 株式会社デンソー | Vehicle skid control device |
| FR2341545A1 (en) * | 1976-02-19 | 1977-09-16 | Bp Chem Int Ltd | Chloroprene prodn. from (3,4)-dichloro-butene-(1) - by continuous dehydrochlorination in two-phase water-alcohol mixt. |
| JPS54145198U (en) * | 1978-03-31 | 1979-10-08 |
-
0
- BE BE786986D patent/BE786986A/en unknown
-
1971
- 1971-08-07 DE DE19712139729 patent/DE2139729A1/en active Pending
-
1972
- 1972-06-27 IE IE89772A patent/IE36505B1/en unknown
- 1972-07-12 GB GB3261272A patent/GB1347633A/en not_active Expired
- 1972-08-03 CA CA148,643A patent/CA981700A/en not_active Expired
- 1972-08-04 IT IT5196772A patent/IT965963B/en active
- 1972-08-04 DD DD16486572A patent/DD98506A5/xx unknown
- 1972-08-07 JP JP7903772A patent/JPS4826710A/ja active Pending
- 1972-08-07 NL NL7210794A patent/NL7210794A/xx not_active Application Discontinuation
- 1972-08-07 SU SU1818592A patent/SU512694A3/en active
- 1972-08-07 CS CS550472A patent/CS175436B2/cs unknown
- 1972-08-07 FR FR7228452A patent/FR2148517B1/fr not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1980001912A1 (en) * | 1979-03-06 | 1980-09-18 | Bp Chemicals Limited | Recovery of alkanol in the production of chloroprene |
| WO1980001911A1 (en) * | 1979-03-06 | 1980-09-18 | Bp Chem Int Ltd | Recovery of alkanol in chloroprene production |
| WO1980001910A1 (en) * | 1979-03-06 | 1980-09-18 | Bp Chem Int Ltd | Recovery of alkanol from bleed streams in chloroprene production |
| US4629816A (en) * | 1982-03-11 | 1986-12-16 | Bayer Aktiengesellschaft | Process for the production of 2,3-dichlorobutadiene-(1,3) |
Also Published As
| Publication number | Publication date |
|---|---|
| IT965963B (en) | 1974-02-11 |
| IE36505L (en) | 1973-02-07 |
| DE2139729A1 (en) | 1973-02-15 |
| FR2148517B1 (en) | 1977-08-26 |
| FR2148517A1 (en) | 1973-03-23 |
| CA981700A (en) | 1976-01-13 |
| NL7210794A (en) | 1973-02-09 |
| DD98506A5 (en) | 1973-06-20 |
| CS175436B2 (en) | 1977-05-31 |
| SU512694A3 (en) | 1976-04-30 |
| BE786986A (en) | 1973-01-31 |
| JPS4826710A (en) | 1973-04-09 |
| IE36505B1 (en) | 1976-11-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |