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Polyimide foams (Document No: 20080007377)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 1982 |
| Description | Copolymide foams derived from a diester of 3,3',4,4'-benzophenonetetracarboxylic acid, an aromatic diamine, and a heterocyclic diamine. A molar concentration of the heterocyclic diamine approaching but not exceeding 0.42 is employed. This results in a flexible foam with a homogeneous cellular structure and a reduced compression set loss. |
| File Size | 463686 |
| Page Count | 5 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20080007377 |
| Archival Resource Key | ark:/13960/t56f0p83t |
| Language | English |
| Publisher Date | 1982-06-01 |
| Access Restriction | Open |
| Subject Keyword | Nonmetallic Materials Foams Diamines Patents Esters Heterocyclic Compounds Polyimides Ntrs Nasa Technical Reports ServerĀ (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Patent |