JPS5634640A - Preparation of chloroprene - Google Patents
Preparation of chloropreneInfo
- Publication number
- JPS5634640A JPS5634640A JP11157179A JP11157179A JPS5634640A JP S5634640 A JPS5634640 A JP S5634640A JP 11157179 A JP11157179 A JP 11157179A JP 11157179 A JP11157179 A JP 11157179A JP S5634640 A JPS5634640 A JP S5634640A
- Authority
- JP
- Japan
- Prior art keywords
- chloroprene
- components
- low
- dichlorobutene
- pref
- 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.)
- Pending
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To separate and recover chloroprene from the low b.p. components of the dehydrochlorination product of 3,4-dichlorobutene-1, in high yield, by evaporating or distilling the product, thereby separating to low b.p. components and high b.p. components.
CONSTITUTION: In the preparation of chloroprene by the dehydrochlorination of 3,4-dichlorobutene-1 in an aqueous solution of an alkali metal hydroxide in the presence of tetrahydrofurfuryl alcohol, the dehydrochlorination product is separated, by evaporation or distillation, to low b.p. components comprising chloroprene, water and unreacted 3,4-dichlorobutene-1 (pref. reused in the reaction), and high b.p. components comprising tetrahydrofurfuryl alcohol (pref. reused in the reaction) and alkali metal chloride, and then chloroprene is separated (pref. by introducing directly into a crystallizer) from the low b.p. components.
EFFECT: The polymerization of chloroprene can be suppressed, and the process can be carried out with low heat consumption.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11157179A JPS5634640A (en) | 1979-08-31 | 1979-08-31 | Preparation of chloroprene |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11157179A JPS5634640A (en) | 1979-08-31 | 1979-08-31 | Preparation of chloroprene |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5634640A true JPS5634640A (en) | 1981-04-06 |
Family
ID=14564743
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11157179A Pending JPS5634640A (en) | 1979-08-31 | 1979-08-31 | Preparation of chloroprene |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5634640A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53116306A (en) * | 1977-03-16 | 1978-10-11 | Denki Kagaku Kogyo Kk | Preparation of chloroprene |
-
1979
- 1979-08-31 JP JP11157179A patent/JPS5634640A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53116306A (en) * | 1977-03-16 | 1978-10-11 | Denki Kagaku Kogyo Kk | Preparation of chloroprene |
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