FR2409252A1 - Procede de purification de l'acide p-tolylique obtenu par oxydation du p-xylene - Google Patents
Procede de purification de l'acide p-tolylique obtenu par oxydation du p-xyleneInfo
- Publication number
- FR2409252A1 FR2409252A1 FR7830247A FR7830247A FR2409252A1 FR 2409252 A1 FR2409252 A1 FR 2409252A1 FR 7830247 A FR7830247 A FR 7830247A FR 7830247 A FR7830247 A FR 7830247A FR 2409252 A1 FR2409252 A1 FR 2409252A1
- Authority
- FR
- France
- Prior art keywords
- tolylic acid
- xylene
- oxidation
- acid obtained
- purification process
- 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.)
- Withdrawn
Links
- 239000002253 acid Substances 0.000 title abstract 5
- 238000000746 purification Methods 0.000 title abstract 3
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical compound CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 title abstract 2
- 230000003647 oxidation Effects 0.000 title abstract 2
- 238000007254 oxidation reaction Methods 0.000 title abstract 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000006227 byproduct Substances 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000003086 colorant Substances 0.000 abstract 1
- 239000003814 drug Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000003960 organic solvent Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/487—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to chemical modification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
LA PRESENTE INVENTION CONCERNE LA PURIFICATION DE L'ACIDE P-TOLYLIQUE OBTENU PAR OXYDATION DU P-XYLENE. LE PROCEDE DE L'INVENTION CONSISTE A TRAITER UNE SOLUTION D'ACIDE P-TOLYLIQUE BRUT DANS UN SOLVANT ORGANIQUE A TEMPERATURE ELEVEE AVEC UN AGENT BASIQUE QUI, DE FACON SELECTIVE, CONDUIT A LA FORMATION DE SELS, DE PREFERENCE AVEC LES SOUS-PRODUITS, PUIS A SEPARER LES SELS FORMES ET A ISOLER L'ACIDE P-TOLYLIQUE PLUS PUR. APPLICATION : PURIFICATION DE L'ACIDE P-TOLYLIQUE UTILISE NOTAMMENT POUR LA FABRICATION DE CERTAINS COLORANTS ET MEDICAMENTS.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2751363A DE2751363C2 (de) | 1977-11-17 | 1977-11-17 | Verfahren zur Reinigung von p-Toluylsäure, die durch Oxidation von p-Xylol mit Luftsauerstoff in Gegenwart von Schwermetallsalz-Katalysatoren erhalten worden ist |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2409252A1 true FR2409252A1 (fr) | 1979-06-15 |
Family
ID=6023948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7830247A Withdrawn FR2409252A1 (fr) | 1977-11-17 | 1978-10-24 | Procede de purification de l'acide p-tolylique obtenu par oxydation du p-xylene |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS5479244A (fr) |
| BE (1) | BE872048A (fr) |
| DE (1) | DE2751363C2 (fr) |
| FR (1) | FR2409252A1 (fr) |
| GB (1) | GB2008114B (fr) |
| IT (1) | IT1157709B (fr) |
| NL (1) | NL7811342A (fr) |
| SE (1) | SE7811835L (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07116096B2 (ja) * | 1986-12-04 | 1995-12-13 | 三菱瓦斯化学株式会社 | 高純度0−トルイル酸の製造方法 |
| JP6274022B2 (ja) * | 2014-06-11 | 2018-02-07 | 住友化学株式会社 | シクロアルカンジカルボン酸モノエステルの製造方法 |
| JP6409611B2 (ja) | 2015-02-23 | 2018-10-24 | 東レ株式会社 | p−トルイル酸の製造方法 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB757455A (en) * | 1953-07-20 | 1956-09-19 | Bataafsche Petroleum | A process for the separation of tertiary-alkyl-substituted benzoic acids from mixtures containing said acids |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2317455A (en) * | 1940-06-27 | 1943-04-27 | Du Pont | Purifying benzoic acid |
-
1977
- 1977-11-17 DE DE2751363A patent/DE2751363C2/de not_active Expired
-
1978
- 1978-10-24 FR FR7830247A patent/FR2409252A1/fr not_active Withdrawn
- 1978-11-13 GB GB7844258A patent/GB2008114B/en not_active Expired
- 1978-11-14 JP JP13946378A patent/JPS5479244A/ja active Pending
- 1978-11-15 IT IT51918/78A patent/IT1157709B/it active
- 1978-11-16 SE SE7811835A patent/SE7811835L/xx unknown
- 1978-11-16 NL NL7811342A patent/NL7811342A/xx not_active Application Discontinuation
- 1978-11-16 BE BE191753A patent/BE872048A/fr unknown
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB757455A (en) * | 1953-07-20 | 1956-09-19 | Bataafsche Petroleum | A process for the separation of tertiary-alkyl-substituted benzoic acids from mixtures containing said acids |
Also Published As
| Publication number | Publication date |
|---|---|
| SE7811835L (sv) | 1979-05-18 |
| JPS5479244A (en) | 1979-06-25 |
| IT1157709B (it) | 1987-02-18 |
| BE872048A (fr) | 1979-03-16 |
| IT7851918A0 (it) | 1978-11-15 |
| DE2751363A1 (de) | 1979-05-23 |
| NL7811342A (nl) | 1979-05-21 |
| GB2008114B (en) | 1982-04-07 |
| DE2751363C2 (de) | 1985-10-17 |
| GB2008114A (en) | 1979-05-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RE | Withdrawal of published application |