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High temperature resistant polyimide from tetra ester, diamine, diester and n-arylnadimide
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 1985 |
| Description | The invention described relates to improved polyimide resins which are noted for their high thermal and oxidative stability, high strength at elevated temperatures and which exhibit many other outstanding physical and chemical properties, especially useful in high temperature applications. The polyimides are prepared by the reaction, with application of heat of a mixture of monomers comprising: (1) a dialkyl or tetraalkyl ester of an aromatic tetracarboxylic acid, (2) and aromatic diamine, (3) a monoalkyl or dialky ester of a dicarboxylic acid, and (4) a N-arylnadimide such as N-phenylnadimide. Polyimides of monomers (1), (2) and (3) are known. |
| File Size | 675637 |
| Page Count | 8 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19860009986 |
| Archival Resource Key | ark:/13960/t6g20vw1z |
| Language | English |
| Publisher Date | 1985-12-24 |
| Access Restriction | Open |
| Subject Keyword | Nonmetallic Materials Refractory Materials Oxidation Resistance Chemical Reactions Synthesis Chemistry Monomers Thermal Stability Polyimide Resins Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Patent |
