GB1264815A - - Google Patents
Info
- Publication number
- GB1264815A GB1264815A GB1264815DA GB1264815A GB 1264815 A GB1264815 A GB 1264815A GB 1264815D A GB1264815D A GB 1264815DA GB 1264815 A GB1264815 A GB 1264815A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reaction zone
- phase
- condensed
- aqueous phase
- july
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
- C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
- C07C51/255—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting
- C07C51/265—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting having alkyl side chains which are oxidised to carboxyl groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1,264,815. Benzene carboxylic acids. BADISCHE ANILIN- & SODA-FABRIK A.G. 10 July, 1969 [11 July, 1968], No. 34830/69. Heading C2C. Benzene carboxylic acids are prepared by reacting a benzene substituted by one or more alkyl, hydroxyalkyl or formyl groups with molecular oxygen in the liquid phase in a reaction zone in the presence of a heavy metal catalyst, an activator selected from bromides, peroxides or bromide- or peroxide-forming compounds and an alkane carboxylic acid at elevated temperature and pressure, wherein a vapour phase effluent is withdrawn from the reaction zone and fractionated at substantially reaction zone pressure, the vapour phase from the fractionation step is cooled to below 80‹ C. and at least 30‹ C. below reaction temperature but not below ambient temperature so as to form a condensed organic phase, a condensed aqueous phase and uncondensed material, the condensed organic phase is returned to the reaction zone, water is removed from the condensed aqueous phase to balance substantially the water formed in the reaction zone and the remainder of the aqueous phase is returned to the reaction zone, and uncondensed material from the fractionation is recycled as recycle gas to the liquid phase in the reaction zone.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681768899 DE1768899A1 (en) | 1968-07-11 | 1968-07-11 | Process for the preparation of benzene carboxylic acids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1264815A true GB1264815A (en) | 1972-02-23 |
Family
ID=5699909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1264815D Expired GB1264815A (en) | 1968-07-11 | 1969-07-10 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE736015A (en) |
| DE (1) | DE1768899A1 (en) |
| FR (1) | FR2012739A1 (en) |
| GB (1) | GB1264815A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5032140A (en) * | 1973-07-28 | 1975-03-28 | ||
| EP0261892A3 (en) * | 1986-09-26 | 1989-03-15 | Mitsui Petrochemical Industries, Ltd. | The production of aromatic carboxylic acids |
| WO1996030327A1 (en) * | 1995-03-27 | 1996-10-03 | Eastman Chemical Company | Process for the production of aromatic carboxylic acids |
-
1968
- 1968-07-11 DE DE19681768899 patent/DE1768899A1/en active Pending
-
1969
- 1969-07-09 FR FR6923345A patent/FR2012739A1/fr not_active Withdrawn
- 1969-07-10 GB GB1264815D patent/GB1264815A/en not_active Expired
- 1969-07-11 BE BE736015D patent/BE736015A/xx unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5032140A (en) * | 1973-07-28 | 1975-03-28 | ||
| EP0261892A3 (en) * | 1986-09-26 | 1989-03-15 | Mitsui Petrochemical Industries, Ltd. | The production of aromatic carboxylic acids |
| WO1996030327A1 (en) * | 1995-03-27 | 1996-10-03 | Eastman Chemical Company | Process for the production of aromatic carboxylic acids |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1768899A1 (en) | 1972-01-13 |
| BE736015A (en) | 1970-01-12 |
| FR2012739A1 (en) | 1970-03-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |