GB1467275A - Dianhydrides - Google Patents
DianhydridesInfo
- Publication number
- GB1467275A GB1467275A GB1931574A GB1931574A GB1467275A GB 1467275 A GB1467275 A GB 1467275A GB 1931574 A GB1931574 A GB 1931574A GB 1931574 A GB1931574 A GB 1931574A GB 1467275 A GB1467275 A GB 1467275A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dianhydride
- preparation
- nitrophthalic anhydride
- tetracarboxydiphenyl ether
- polyetherimides
- 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
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
- C07C51/567—Preparation of carboxylic acid anhydrides by reactions not involving carboxylic acid anhydride groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Furan Compounds (AREA)
- Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
- Epoxy Resins (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
Abstract
1467275 Preparation of 2,2<SP>1</SP>,3,3<SP>1</SP>-tetracarboxydiphenyl ether and its dianhydride GENERAL ELECTRIC CO 2 May 1974 [22 June 1973] 19315/74 Heading C2C [Also in Division C3] 2,2<SP>1</SP>,3,3<SP>1</SP> - Tetracarboxydiphenyl ether dianhydride (and the free acid form) are obtained by heating 3-nitrophthalic anhydride at 210- 260‹ C. in the presence of 0À1-10 wt. per cent, based on the weight of the 3-nitrophthalic anhydride, of a nitrite salt of an alkali metal an alkaline earth metal, silver or cadmium. The preparation may be effected under melt conditions or in the presence of an inert organic solvent. The dianhydride is a curing agent for epoxy resins and a starting material for polyetherimides.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US37277173A | 1973-06-22 | 1973-06-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1467275A true GB1467275A (en) | 1977-03-16 |
Family
ID=23469576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1931574A Expired GB1467275A (en) | 1973-06-22 | 1974-05-02 | Dianhydrides |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS5850992B2 (en) |
| BR (1) | BR7405070D0 (en) |
| DD (1) | DD112430A5 (en) |
| DE (1) | DE2416594C2 (en) |
| DK (1) | DK143400C (en) |
| FR (1) | FR2299331A1 (en) |
| GB (1) | GB1467275A (en) |
| IT (1) | IT1015232B (en) |
| SE (1) | SE412226B (en) |
| SU (1) | SU561504A3 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016145647A1 (en) * | 2015-03-19 | 2016-09-22 | Ablestik (Shanghai) Ltd. | Epoxy molding compound using anhydride hardener, manufacturing process and use thereof |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58193198A (en) * | 1982-05-07 | 1983-11-10 | 株式会社日立製作所 | Exchanger for recording element of recording apparatus |
| JPS59169993U (en) * | 1983-04-27 | 1984-11-14 | ローランド ディー．ジー．株式会社 | X-Y Protsuta pen holder |
| JPS6038795U (en) * | 1983-08-23 | 1985-03-18 | アルプス電気株式会社 | X-Y plotter |
| US5166404A (en) * | 1989-05-15 | 1992-11-24 | Occidental Chemical Corporation | Dioxydiphthalic acid esters |
| US5185451A (en) * | 1989-05-15 | 1993-02-09 | Occidental Chemical Corporation | Bis-imides of dioxydiphthalic acid |
-
1974
- 1974-04-05 DE DE19742416594 patent/DE2416594C2/en not_active Expired
- 1974-05-02 GB GB1931574A patent/GB1467275A/en not_active Expired
- 1974-06-14 SU SU2034558A patent/SU561504A3/en active
- 1974-06-19 SE SE7408147A patent/SE412226B/en not_active IP Right Cessation
- 1974-06-20 IT IT2420374A patent/IT1015232B/en active
- 1974-06-20 DD DD17933074A patent/DD112430A5/xx unknown
- 1974-06-20 DK DK332774A patent/DK143400C/en not_active IP Right Cessation
- 1974-06-20 JP JP6974974A patent/JPS5850992B2/en not_active Expired
- 1974-06-21 FR FR7421578A patent/FR2299331A1/en active Granted
- 1974-06-21 BR BR507074A patent/BR7405070D0/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016145647A1 (en) * | 2015-03-19 | 2016-09-22 | Ablestik (Shanghai) Ltd. | Epoxy molding compound using anhydride hardener, manufacturing process and use thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5850992B2 (en) | 1983-11-14 |
| DE2416594A1 (en) | 1975-01-16 |
| DD112430A5 (en) | 1975-04-12 |
| JPS5032143A (en) | 1975-03-28 |
| DE2416594C2 (en) | 1983-12-08 |
| SU561504A3 (en) | 1977-06-05 |
| IT1015232B (en) | 1977-05-10 |
| DK143400B (en) | 1981-08-17 |
| BR7405070D0 (en) | 1975-01-21 |
| FR2299331A1 (en) | 1976-08-27 |
| DK143400C (en) | 1981-12-21 |
| SE7408147L (en) | 1974-12-23 |
| SE412226B (en) | 1980-02-25 |
| AU6775674A (en) | 1975-10-16 |
| FR2299331B1 (en) | 1979-02-23 |
| DK332774A (en) | 1975-03-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE20 | Patent expired after termination of 20 years |
Effective date: 19940501 |