JPS562932A - Continuous preparation of trimellitic acid - Google Patents
Continuous preparation of trimellitic acidInfo
- Publication number
- JPS562932A JPS562932A JP7717679A JP7717679A JPS562932A JP S562932 A JPS562932 A JP S562932A JP 7717679 A JP7717679 A JP 7717679A JP 7717679 A JP7717679 A JP 7717679A JP S562932 A JPS562932 A JP S562932A
- Authority
- JP
- Japan
- Prior art keywords
- continuous
- catalyst
- trimellitic acid
- pseudocumene
- reactor
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To obtain the titled compound as a raw material for plasticizers and heat- resistant plastics in high yield, by the continuous oxidation of pseudocumene at different reaction temperatures in the first and second series reactors of the continuous complete mixing type, in a limited catalyst concentration.
CONSTITUTION: Pseudocumene is oxidized with air in the liquid phase continuously in acetic acid, in the presence of Co, Mn and Br as a catalyst, whose total concentration is 0.05W0.5wt% based on the acetic acid, at 110W170°C, especially at 120W 150°C, in the first reactor and at 180W240°C, particularly 195W225°C, in the second reactor of the continuous complete mixing type to obtain trimellitic acid. The temperature difference between the two reactors is preferably 50°C or more.
EFFECT: The ready recovery and reuse of the catalyst, and a stable and continuous operation.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54077176A JPS585898B2 (en) | 1979-06-19 | 1979-06-19 | Continuous production method of trimellitic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54077176A JPS585898B2 (en) | 1979-06-19 | 1979-06-19 | Continuous production method of trimellitic acid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS562932A true JPS562932A (en) | 1981-01-13 |
| JPS585898B2 JPS585898B2 (en) | 1983-02-02 |
Family
ID=13626482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54077176A Expired JPS585898B2 (en) | 1979-06-19 | 1979-06-19 | Continuous production method of trimellitic acid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS585898B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106187739A (en) * | 2015-04-29 | 2016-12-07 | 中国石油化工股份有限公司 | A kind of continuous producing method of trimellitic acid |
-
1979
- 1979-06-19 JP JP54077176A patent/JPS585898B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106187739A (en) * | 2015-04-29 | 2016-12-07 | 中国石油化工股份有限公司 | A kind of continuous producing method of trimellitic acid |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS585898B2 (en) | 1983-02-02 |
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