JPS54119405A - Preparation of diol - Google Patents
Preparation of diolInfo
- Publication number
- JPS54119405A JPS54119405A JP2603178A JP2603178A JPS54119405A JP S54119405 A JPS54119405 A JP S54119405A JP 2603178 A JP2603178 A JP 2603178A JP 2603178 A JP2603178 A JP 2603178A JP S54119405 A JPS54119405 A JP S54119405A
- Authority
- JP
- Japan
- Prior art keywords
- diol
- methanol
- distillation column
- ester
- continuously
- 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.)
- Granted
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To obtain a diol by the continuous methanolysis of the acetic ester of the diol, while separating the by-produced methyl acetate efficiently, by feeding the diol ester and methanol continuously to a countercurrent vapor-liquid catalytic reactor.
CONSTITUTION: Acetic ester of 1,4-butanediol or 2-butene-1,4-diol is reacted with methanol in the presence of an acidic or basic catalyst. The liquid diol ester is continuously fed from the middle part of a reaction distillation column, and methanol from the lower part, to carry out a vapor-liquid catalytic reaction countercurrently. 1,4-Butanediol or 2-butene-1,4-diol is continuously produced, while cycling a part of a resulting reaction solution, which contains a diol obtained from the bottom part of the reaction distillation column, and/or a fresh diol to the upper part of the distillation column and separating methyl acetate free from methanol from the top of the column.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2603178A JPS54119405A (en) | 1978-03-09 | 1978-03-09 | Preparation of diol |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2603178A JPS54119405A (en) | 1978-03-09 | 1978-03-09 | Preparation of diol |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54119405A true JPS54119405A (en) | 1979-09-17 |
JPS5642569B2 JPS5642569B2 (en) | 1981-10-06 |
Family
ID=12182327
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2603178A Granted JPS54119405A (en) | 1978-03-09 | 1978-03-09 | Preparation of diol |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54119405A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03194282A (en) * | 1989-12-23 | 1991-08-23 | Tokai Rubber Ind Ltd | Hose with bellows |
WO1997023559A3 (en) * | 1995-12-14 | 1997-09-12 | Du Pont | Alkanolysis of polyether polyol esters by reactive distillation |
-
1978
- 1978-03-09 JP JP2603178A patent/JPS54119405A/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03194282A (en) * | 1989-12-23 | 1991-08-23 | Tokai Rubber Ind Ltd | Hose with bellows |
WO1997023559A3 (en) * | 1995-12-14 | 1997-09-12 | Du Pont | Alkanolysis of polyether polyol esters by reactive distillation |
CN1080278C (en) * | 1995-12-14 | 2002-03-06 | 纳幕尔杜邦公司 | Alkanolysis of polyether polyol esters by reactive distillation |
KR100488135B1 (en) * | 1995-12-14 | 2005-09-26 | 이.아이,듀우판드네모아앤드캄파니 | Alkanolysis of polyether polyol esters by reactive distillation |
Also Published As
Publication number | Publication date |
---|---|
JPS5642569B2 (en) | 1981-10-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES2090123T3 (en) | CONTINUOUS PROCESS FOR THE PRODUCTION OF CARBOXYL ACID ESTERS. | |
NZ222597A (en) | Process for the production of pure dimethyl ether | |
IE41093L (en) | Production of carbonic acid esters. | |
RU2004103423A (en) | METHOD FOR PRODUCING FORMALDEHYDE RAW MATERIAL WITH LOW WATER CONTENT | |
JPS5562047A (en) | Preparation of methacrylic acid ester | |
JPS5452027A (en) | Separation of methacrolein and methacrylic acid | |
ES8106878A1 (en) | Process for the separation of water from mixtures with vinyl acetate and acetic acid. | |
JPS54119405A (en) | Preparation of diol | |
JPS5432409A (en) | Preparation of ciol and cyclic ether | |
ES8303282A1 (en) | Esterification process of acetic acid by C2 to C5 alcohols. | |
GB2013184A (en) | Preparation of Vinyl Acetate | |
DE2962595D1 (en) | Process for producing tetrahydrofuran and 1,4-butanediol | |
JPS5559122A (en) | Preparation of diol | |
JPS5461109A (en) | Preparation of 1,4-butanediol and/or 1,4-butenediol | |
JPS55153741A (en) | Improved preparation of carboxylic acid ester | |
JPS55105645A (en) | Continuous esterification of methacrylic acid | |
JPS54163517A (en) | Production of dialkylaminoalkyl acrylate or dialkylaminoalkyl methacrylate | |
JPS5293705A (en) | Continuous preparation of glycerine | |
JPS53105471A (en) | Preparation of cyclic ethers | |
JPS54115305A (en) | Preparation of chlorotrifluoroethylene | |
AU621464B2 (en) | Process for continuously producing an anhydrous methyl acetate/methanol mixture | |
JPS57108029A (en) | Preparation of 1,4-butanediol and tetrahydrofuran | |
JPS5640637A (en) | Preparation of formic acid | |
JPS51125252A (en) | Process for preparing substituted cyclopropanecarboxylic acid esters | |
JPS5384932A (en) | Preparation of terephthalic acid |