GB1214642A - Aromatic polyimides and precursors therefor - Google Patents
Aromatic polyimides and precursors thereforInfo
- Publication number
- GB1214642A GB1214642A GB3822067A GB3822067A GB1214642A GB 1214642 A GB1214642 A GB 1214642A GB 3822067 A GB3822067 A GB 3822067A GB 3822067 A GB3822067 A GB 3822067A GB 1214642 A GB1214642 A GB 1214642A
- Authority
- GB
- United Kingdom
- Prior art keywords
- moulding
- prepolymer
- reactants
- aromatic
- polyimide
- 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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/1003—Preparatory processes
Abstract
1,214,642. Polyimide bonded laminates; moulding plastic substances. IMPERIAL CHEMICAL INDUSTRIES Ltd. 5 Aug., 1968 [18 Aug., 1967], No. 38220/67. Headings B5A and B5N. [Also in Division C3] Insoluble infusible polymers may be obtained from a mixture of an aromatic tetracarboxylic dianhydride, diester or tetraester with a urethane or urea derivative of an aromatic diamine Z-CO-NH-R<SP>1</SP>-NH-CO-Z<SP>1</SP> or from a similar urea or urethane derivative of an amino-aromatic dicarboxylic anhydride, monoester or diester, Z and Z<SP>1</SP> being -OY or -NYY<SP>1</SP> and Y and Y<SP>1</SP> being aliphatic or aromatic radicals free from terminal or pendant methylene groups which may together with the N atom form a heterocyclic ring. A prepolymer may be formed by heating at 120‹ C. or above a melt, slurry or solution of the reactants. Fillers, e.g. preformed polyimide powder, glass, asbestos, carbon or metal fibres, abrasives or solid lubricants, e.g. graphite or molybdenum disulphide may be incorporated with the reactants or prepolymer. The prepolymers may be used as moulding powders, e.g. for the manufacture of high temperature abrasives or self-lubricating bearings, or as solutions for casting, coating or impregnating. The evolution of CO 2 or alcohols during curing in the absence of imposed pressure leads to polyimide foams. Numerous reactants and solvents are mentioned. Moulding and laminating.-The prepolymers may be partly precured to evolve 70 to 95% of the volatile material, milled to a fine powder, e.g. 0À045 mm., moulded at room or slightly elevated temperature and high pressure, e.g. up to 700 MN/m.<SP>2</SP> and then sintered in the free state. The application of this technique is illustrated in Examples 18, 19 and 21. In Examples 20, 22 and 23 asbestos felt, carbon fibre mat and glass cloth, respectively, are impregnated with prepolymer, dried and then laminated by compression moulding. In Example 22 the carbon fibres are aligned longitudinal and transverse in alternate laminµ.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3822067A GB1214642A (en) | 1967-08-18 | 1967-08-18 | Aromatic polyimides and precursors therefor |
| BE719607D BE719607A (en) | 1967-08-18 | 1968-08-16 | |
| DE19681795136 DE1795136A1 (en) | 1967-08-18 | 1968-08-16 | Aromatic polymers and processes for making them |
| FR1576319D FR1576319A (en) | 1967-08-18 | 1968-08-16 | |
| NL6811747A NL6811747A (en) | 1967-08-18 | 1968-08-16 | |
| US6274A US3671486A (en) | 1967-08-18 | 1970-01-27 | Filled fusible aromatic prepolymer composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3822067A GB1214642A (en) | 1967-08-18 | 1967-08-18 | Aromatic polyimides and precursors therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1214642A true GB1214642A (en) | 1970-12-02 |
Family
ID=10402045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3822067A Expired GB1214642A (en) | 1967-08-18 | 1967-08-18 | Aromatic polyimides and precursors therefor |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE719607A (en) |
| DE (1) | DE1795136A1 (en) |
| FR (1) | FR1576319A (en) |
| GB (1) | GB1214642A (en) |
| NL (1) | NL6811747A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5003078A (en) * | 1989-05-16 | 1991-03-26 | The United States Of America As Represented By The Secretary Of The Navy | Synthesis of phthalonitrile resins containing ether and imide linkages |
| US5132396A (en) * | 1990-04-30 | 1992-07-21 | The United States Of America As Represented By The Secretary Of The Navy | Phthalonitrile monomers containing imide and/or phenoxy linkages, and polymers thereof |
| US5159054A (en) * | 1989-05-16 | 1992-10-27 | The United States Of America As Represented By The Secretary Of The Navy | Synthesis of phthalonitrile resins containing ether and imide linkages |
| CN113510891A (en) * | 2021-04-23 | 2021-10-19 | 中国科学院兰州化学物理研究所 | Two-stage hole polyimide material, preparation method thereof, two-stage hole polyimide retainer and application thereof |
-
1967
- 1967-08-18 GB GB3822067A patent/GB1214642A/en not_active Expired
-
1968
- 1968-08-16 BE BE719607D patent/BE719607A/xx unknown
- 1968-08-16 NL NL6811747A patent/NL6811747A/xx unknown
- 1968-08-16 FR FR1576319D patent/FR1576319A/fr not_active Expired
- 1968-08-16 DE DE19681795136 patent/DE1795136A1/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5003078A (en) * | 1989-05-16 | 1991-03-26 | The United States Of America As Represented By The Secretary Of The Navy | Synthesis of phthalonitrile resins containing ether and imide linkages |
| US5159054A (en) * | 1989-05-16 | 1992-10-27 | The United States Of America As Represented By The Secretary Of The Navy | Synthesis of phthalonitrile resins containing ether and imide linkages |
| US5292854A (en) * | 1989-05-16 | 1994-03-08 | The United States Of America As Represented By The Secretary Of The Navy | Synthesis of phthalonitrile resins containing ether and imide linkages with aromatic diamine curing agent |
| US5132396A (en) * | 1990-04-30 | 1992-07-21 | The United States Of America As Represented By The Secretary Of The Navy | Phthalonitrile monomers containing imide and/or phenoxy linkages, and polymers thereof |
| CN113510891A (en) * | 2021-04-23 | 2021-10-19 | 中国科学院兰州化学物理研究所 | Two-stage hole polyimide material, preparation method thereof, two-stage hole polyimide retainer and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1795136A1 (en) | 1970-12-10 |
| NL6811747A (en) | 1969-02-20 |
| FR1576319A (en) | 1969-06-16 |
| BE719607A (en) | 1969-02-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |