GB1226695A - - Google Patents
Info
- Publication number
- GB1226695A GB1226695A GB1226695DA GB1226695A GB 1226695 A GB1226695 A GB 1226695A GB 1226695D A GB1226695D A GB 1226695DA GB 1226695 A GB1226695 A GB 1226695A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dianhydride
- aromatic
- dianhydrides
- dioxane
- complex
- 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
- 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
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- CYIDZMCFTVVTJO-UHFFFAOYSA-N pyromellitic acid Chemical compound OC(=O)C1=CC(C(O)=O)=C(C(O)=O)C=C1C(O)=O CYIDZMCFTVVTJO-UHFFFAOYSA-N 0.000 abstract 2
- 125000003118 aryl group Chemical group 0.000 abstract 1
- DMLAVOWQYNRWNQ-UHFFFAOYSA-N azobenzene Chemical compound C1=CC=CC=C1N=NC1=CC=CC=C1 DMLAVOWQYNRWNQ-UHFFFAOYSA-N 0.000 abstract 1
- GAUZCKBSTZFWCT-UHFFFAOYSA-N azoxybenzene Chemical compound C=1C=CC=CC=1[N+]([O-])=NC1=CC=CC=C1 GAUZCKBSTZFWCT-UHFFFAOYSA-N 0.000 abstract 1
- 125000006159 dianhydride group Chemical group 0.000 abstract 1
- 238000000746 purification 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR151198 | 1968-05-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1226695A true GB1226695A (enrdf_load_stackoverflow) | 1971-03-31 |
Family
ID=8650038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1226695D Expired GB1226695A (enrdf_load_stackoverflow) | 1968-05-09 | 1969-05-09 |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1923845A1 (enrdf_load_stackoverflow) |
| FR (1) | FR1574843A (enrdf_load_stackoverflow) |
| GB (1) | GB1226695A (enrdf_load_stackoverflow) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2416913A1 (fr) * | 1978-02-09 | 1979-09-07 | Hitachi Chemical Co Ltd | Procede de fabrication de produits intermediaires du type polyamide a fonctions acides destines a etre utilises pour l'isolation de semi-conducteur |
| EP0429775A3 (en) * | 1989-09-01 | 1992-05-27 | Hitachi, Ltd. | Carboxylic acid anhydride complexes and their preparation and use |
-
1968
- 1968-05-09 FR FR1574843D patent/FR1574843A/fr not_active Expired
-
1969
- 1969-05-09 GB GB1226695D patent/GB1226695A/en not_active Expired
- 1969-05-09 DE DE19691923845 patent/DE1923845A1/de not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2416913A1 (fr) * | 1978-02-09 | 1979-09-07 | Hitachi Chemical Co Ltd | Procede de fabrication de produits intermediaires du type polyamide a fonctions acides destines a etre utilises pour l'isolation de semi-conducteur |
| 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 |
|---|---|
| FR1574843A (enrdf_load_stackoverflow) | 1969-07-18 |
| DE1923845A1 (de) | 1969-11-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |