JPS6461445A - Production of ketene derivative - Google Patents
Production of ketene derivativeInfo
- Publication number
- JPS6461445A JPS6461445A JP21640587A JP21640587A JPS6461445A JP S6461445 A JPS6461445 A JP S6461445A JP 21640587 A JP21640587 A JP 21640587A JP 21640587 A JP21640587 A JP 21640587A JP S6461445 A JPS6461445 A JP S6461445A
- Authority
- JP
- Japan
- Prior art keywords
- reaction solution
- reaction
- conversion rate
- acetone
- gas
- 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 efficiently obtain the titled compound in high conversion rate and selectivity, by circulating a reaction solution of aliphatic ketones, such as acetone, using a liquid ejector, simultaneously sucking unstable ketene gas, absorbing the ketene gas into the reaction solution and continuously carrying out reaction. CONSTITUTION:A reaction solution of a catalyst, such as naphthalene-1,5- disulfonic acid, and aliphatic ketones, such as acetone, is circulated using a liquid ejector to suck ketene gas, which is then absorbed into the reaction solution and continuously reacted at a temperature of >=60 deg.C and at least 10 deg.C lower than the boiling point, e.g. 85 deg.C when the conversion rate is 80%, of the reaction solution to afford the aimed compound, such as isopropenyl acetate, in about 80% conversion rate. Although the circulation flow rate of the reaction solution may be determined according to the specifications of the ejector used, a device is preferably adopted so that a circulation flow rate rather higher than the obtained value may be taken to provide a negative pressure of a gas line. Furthermore, continuous operation can be carried out for a long period without operational clogging, etc., by the above-mentioned method for reaction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21640587A JPH0653707B2 (en) | 1987-09-01 | 1987-09-01 | Method for producing ketene derivative |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21640587A JPH0653707B2 (en) | 1987-09-01 | 1987-09-01 | Method for producing ketene derivative |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6461445A true JPS6461445A (en) | 1989-03-08 |
| JPH0653707B2 JPH0653707B2 (en) | 1994-07-20 |
Family
ID=16688048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21640587A Expired - Fee Related JPH0653707B2 (en) | 1987-09-01 | 1987-09-01 | Method for producing ketene derivative |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0653707B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110511142A (en) * | 2019-08-29 | 2019-11-29 | 青岛科技大学 | A kind of continuous production system and production technology of methylvinyl acetate |
-
1987
- 1987-09-01 JP JP21640587A patent/JPH0653707B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0653707B2 (en) | 1994-07-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313532 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| LAPS | Cancellation because of no payment of annual fees |