FR2173651A1 - Fibre-quality terephthalic acid prodn - by liquid phase oxidn of para-xylene - Google Patents
Fibre-quality terephthalic acid prodn - by liquid phase oxidn of para-xyleneInfo
- Publication number
- FR2173651A1 FR2173651A1 FR7201356A FR7201356A FR2173651A1 FR 2173651 A1 FR2173651 A1 FR 2173651A1 FR 7201356 A FR7201356 A FR 7201356A FR 7201356 A FR7201356 A FR 7201356A FR 2173651 A1 FR2173651 A1 FR 2173651A1
- Authority
- FR
- France
- Prior art keywords
- xylene
- terephthalic acid
- pref
- degrees
- fibre
- 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
-
- 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
Terephthalic acid, of fibre quality, is obtained by oxidising p-xylene, by O2 in the presence of a lower aliphatic carboxylic acid, pref. acetic, as solvent, and a catalyst contng. a heavy metal, pref. Co and Mn with Br; the reaction is effected by feeding the p-xylene into the reaction vessel at is not 3, pref. 4-10, entry points situated in a vertical plane, and stirring the reaction mixture vigorously. The reaction is at 80 degrees -230 degrees C., pref. 130 degrees-200 degrees C. at a pressure sufficient to keep the p-xylene and solvent liquid.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7201356A FR2173651A1 (en) | 1972-01-14 | 1972-01-14 | Fibre-quality terephthalic acid prodn - by liquid phase oxidn of para-xylene |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7201356A FR2173651A1 (en) | 1972-01-14 | 1972-01-14 | Fibre-quality terephthalic acid prodn - by liquid phase oxidn of para-xylene |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2173651A1 true FR2173651A1 (en) | 1973-10-12 |
FR2173651B1 FR2173651B1 (en) | 1974-09-13 |
Family
ID=9091970
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7201356A Granted FR2173651A1 (en) | 1972-01-14 | 1972-01-14 | Fibre-quality terephthalic acid prodn - by liquid phase oxidn of para-xylene |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2173651A1 (en) |
-
1972
- 1972-01-14 FR FR7201356A patent/FR2173651A1/en active Granted
Non-Patent Citations (1)
Title |
---|
NEANT * |
Also Published As
Publication number | Publication date |
---|---|
FR2173651B1 (en) | 1974-09-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |