GB1132784A - A process for purifying pyromellitic dianhydride - Google Patents
A process for purifying pyromellitic dianhydrideInfo
- Publication number
- GB1132784A GB1132784A GB498866A GB498866A GB1132784A GB 1132784 A GB1132784 A GB 1132784A GB 498866 A GB498866 A GB 498866A GB 498866 A GB498866 A GB 498866A GB 1132784 A GB1132784 A GB 1132784A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dianhydrides
- aromatic
- dianhydride
- adduct
- tetracarboxylic dianhydrides
- 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
- VLDPXPPHXDGHEW-UHFFFAOYSA-N 1-chloro-2-dichlorophosphoryloxybenzene Chemical compound ClC1=CC=CC=C1OP(Cl)(Cl)=O VLDPXPPHXDGHEW-UHFFFAOYSA-N 0.000 title abstract 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 abstract 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 abstract 3
- GTDPSWPPOUPBNX-UHFFFAOYSA-N ac1mqpva Chemical compound CC12C(=O)OC(=O)C1(C)C1(C)C2(C)C(=O)OC1=O GTDPSWPPOUPBNX-UHFFFAOYSA-N 0.000 abstract 3
- 125000003118 aryl group Chemical group 0.000 abstract 3
- 239000003795 chemical substances by application Substances 0.000 abstract 3
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical group CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 abstract 2
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical group CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 abstract 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 abstract 2
- 238000001914 filtration Methods 0.000 abstract 2
- 239000004215 Carbon black (E152) Substances 0.000 abstract 1
- 125000002723 alicyclic group Chemical group 0.000 abstract 1
- 238000009835 boiling Methods 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 125000006159 dianhydride group Chemical group 0.000 abstract 1
- 238000000605 extraction Methods 0.000 abstract 1
- 239000000706 filtrate Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 229930195733 hydrocarbon Natural products 0.000 abstract 1
- 150000002430 hydrocarbons Chemical class 0.000 abstract 1
- 239000000203 mixture Chemical class 0.000 abstract 1
- 229940078552 o-xylene Drugs 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 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
- C07C51/54—Preparation of carboxylic acid anhydrides
- C07C51/573—Separation; Purification; Stabilisation; Use of additives
-
- 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
- C07C51/48—Separation; Purification; Stabilisation; Use of additives by liquid-liquid treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
- Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEG42761A DE1274107B (de) | 1965-02-05 | 1965-02-05 | Verfahren zur Reinigung von Pyromellithsaeuredianhydrid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1132784A true GB1132784A (en) | 1968-11-06 |
Family
ID=7127007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB498866A Expired GB1132784A (en) | 1965-02-05 | 1966-02-04 | A process for purifying pyromellitic dianhydride |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE676048A (enrdf_load_html_response) |
| DE (1) | DE1274107B (enrdf_load_html_response) |
| GB (1) | GB1132784A (enrdf_load_html_response) |
| NL (1) | NL6601382A (enrdf_load_html_response) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3818680A (en) * | 1971-12-17 | 1974-06-25 | Chevron Res | Maleic anhydride recovery method |
| EP0429775A3 (en) * | 1989-09-01 | 1992-05-27 | Hitachi, Ltd. | Carboxylic acid anhydride complexes and their preparation and use |
-
1965
- 1965-02-05 DE DEG42761A patent/DE1274107B/de active Pending
-
1966
- 1966-02-03 NL NL6601382A patent/NL6601382A/xx unknown
- 1966-02-04 GB GB498866A patent/GB1132784A/en not_active Expired
- 1966-02-04 BE BE676048D patent/BE676048A/xx unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3818680A (en) * | 1971-12-17 | 1974-06-25 | Chevron Res | Maleic anhydride recovery method |
| EP0429775A3 (en) * | 1989-09-01 | 1992-05-27 | Hitachi, Ltd. | Carboxylic acid anhydride complexes and their preparation and use |
Also Published As
| Publication number | Publication date |
|---|---|
| BE676048A (enrdf_load_html_response) | 1966-06-16 |
| DE1274107B (de) | 1968-08-01 |
| NL6601382A (enrdf_load_html_response) | 1966-08-08 |
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