JPS5461109A - Preparation of 1,4-butanediol and/or 1,4-butenediol - Google Patents
Preparation of 1,4-butanediol and/or 1,4-butenediolInfo
- Publication number
- JPS5461109A JPS5461109A JP12640577A JP12640577A JPS5461109A JP S5461109 A JPS5461109 A JP S5461109A JP 12640577 A JP12640577 A JP 12640577A JP 12640577 A JP12640577 A JP 12640577A JP S5461109 A JPS5461109 A JP S5461109A
- Authority
- JP
- Japan
- Prior art keywords
- methanol
- diol
- ester
- supplying
- butanediol
- 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 obtain 1,4-butanediol quatitatively using a small amount of methanol, by carrying out the methanolysis of a diol ester by countercurrent catalytic process while continuously supplying a solution of a basic catalyst dissolved in a resulting reaction solution.
CONSTITUTION: In ester interchange reaction of 1,4-diacetoxybutane and/or 1,4- diacetoxybutene (diol ester) with methanol, a countercurrent catalytic reaction is carried out by supplying a sloution, which is obtained by dissolving a basic catalyst in a part of a resulting reaction solution containing formed diol, from the upper part of a reactor continously, and supplying methanol from the lower part and a diol ester from the upper part thereof, to obtain the title diol from the lower part and an azeotropic mixture of by-produced methyl acetate and methanol from the upper part. The mixture is efficently hydrolyzed in the presence of an acidic cation, the hydrolyzate is distilled, and the vapor phase and methanol are recycled to the hydrolysis stage and the ester interchange stage, respectively
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12640577A JPS5461109A (en) | 1977-10-22 | 1977-10-22 | Preparation of 1,4-butanediol and/or 1,4-butenediol |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12640577A JPS5461109A (en) | 1977-10-22 | 1977-10-22 | Preparation of 1,4-butanediol and/or 1,4-butenediol |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5461109A true JPS5461109A (en) | 1979-05-17 |
Family
ID=14934333
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12640577A Pending JPS5461109A (en) | 1977-10-22 | 1977-10-22 | Preparation of 1,4-butanediol and/or 1,4-butenediol |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5461109A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006098437A1 (en) * | 2005-03-17 | 2006-09-21 | Mitsubishi Chemical Corporation | Process for producing polyether polyol compound |
-
1977
- 1977-10-22 JP JP12640577A patent/JPS5461109A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006098437A1 (en) * | 2005-03-17 | 2006-09-21 | Mitsubishi Chemical Corporation | Process for producing polyether polyol compound |
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