SU459457A1 - Method for producing benzenedicarboxylic acids - Google Patents
Method for producing benzenedicarboxylic acidsInfo
- Publication number
- SU459457A1 SU459457A1 SU1909962A SU1909962A SU459457A1 SU 459457 A1 SU459457 A1 SU 459457A1 SU 1909962 A SU1909962 A SU 1909962A SU 1909962 A SU1909962 A SU 1909962A SU 459457 A1 SU459457 A1 SU 459457A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- benzenedicarboxylic acids
- producing
- producing benzenedicarboxylic
- acids
- catalyst
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
3 кислоты непрореагировавшую п-толуиловую кислоту возвращают в цикл на вторую стадию. Проведение трех рециклов оксидата без добавлени катализатора не снижает скорости реакции окислени . Предмет изобретени Способ получени бензолдикарбоновых кислот жидкофазным окислением производных 4 бензола в среде хлорированного ароматического углеводО(рода, например хлорбензола, при повышенной температуре в присутствии в качестве катализатора солей металлов леремениой валентности, прокотированных бромидами ш,елочных металлов, отличаюш,ийс .. целью интенсификации процесса. последний ведут- в присутствии диметилформамида , вз того в количестве 1-10 вес. %.The 3 acids of unreacted p-toluic acid are recycled to the second stage. Carrying out three recycling of the oxidate without adding a catalyst does not reduce the rate of the oxidation reaction. The subject of the invention. A method for producing benzene dicarboxylic acids by the liquid phase oxidation of benzene derivatives 4 in a chlorinated aromatic carbohydrate medium (of a type, for example, chlorobenzene, at elevated temperature, in the presence of leremenia valence, catalyzed by bromides of w-type, christmas trees, distinguished, icy as a catalyst. Process intensification the latter is carried out in the presence of dimethylformamide, taken in an amount of 1-10% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1909962A SU459457A1 (en) | 1973-04-13 | 1973-04-13 | Method for producing benzenedicarboxylic acids |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1909962A SU459457A1 (en) | 1973-04-13 | 1973-04-13 | Method for producing benzenedicarboxylic acids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU459457A1 true SU459457A1 (en) | 1975-02-05 |
Family
ID=20550172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1909962A SU459457A1 (en) | 1973-04-13 | 1973-04-13 | Method for producing benzenedicarboxylic acids |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU459457A1 (en) |
-
1973
- 1973-04-13 SU SU1909962A patent/SU459457A1/en active
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