GB1340463A - Process for the production of 3,4-3,4-benzophenone-tetra carboxylic dianhydride - Google Patents
Process for the production of 3,4-3,4-benzophenone-tetra carboxylic dianhydrideInfo
- Publication number
- GB1340463A GB1340463A GB1550972A GB1550972A GB1340463A GB 1340463 A GB1340463 A GB 1340463A GB 1550972 A GB1550972 A GB 1550972A GB 1550972 A GB1550972 A GB 1550972A GB 1340463 A GB1340463 A GB 1340463A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dianhydride
- benzophenone
- dehydration
- acid
- april
- 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
- 238000006297 dehydration reaction Methods 0.000 abstract 3
- 239000003795 chemical substances by application Substances 0.000 abstract 2
- 230000018044 dehydration Effects 0.000 abstract 2
- 238000005292 vacuum distillation Methods 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 1
- 229910021538 borax Inorganic materials 0.000 abstract 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 abstract 1
- 239000004327 boric acid Substances 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 239000004328 sodium tetraborate Substances 0.000 abstract 1
- 235000010339 sodium tetraborate Nutrition 0.000 abstract 1
- 150000000000 tetracarboxylic acids Chemical class 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- C07C51/56—Preparation of carboxylic acid anhydrides from organic acids, their salts, their esters or their halides, e.g. by carboxylation
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)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
- Furan Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712120505 DE2120505C3 (de) | 1971-04-27 | 1971-04-27 | Verfahren zur Gewinnung von reinem 3,4 3\4' Benzophenontetracar bonsauredianhydnd |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1340463A true GB1340463A (en) | 1973-12-12 |
Family
ID=5806025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1550972A Expired GB1340463A (en) | 1971-04-27 | 1972-04-04 | Process for the production of 3,4-3,4-benzophenone-tetra carboxylic dianhydride |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE2120505C3 (enrdf_load_stackoverflow) |
| FR (1) | FR2134547B1 (enrdf_load_stackoverflow) |
| GB (1) | GB1340463A (enrdf_load_stackoverflow) |
-
1971
- 1971-04-27 DE DE19712120505 patent/DE2120505C3/de not_active Expired
-
1972
- 1972-04-04 GB GB1550972A patent/GB1340463A/en not_active Expired
- 1972-04-26 FR FR7214864A patent/FR2134547B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2120505A1 (enrdf_load_stackoverflow) | 1972-11-23 |
| DE2120505C3 (de) | 1973-11-29 |
| DE2120505B2 (de) | 1973-05-03 |
| FR2134547B1 (enrdf_load_stackoverflow) | 1976-08-06 |
| FR2134547A1 (enrdf_load_stackoverflow) | 1972-12-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |