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Bis (4-(3,4-dimethylene-pyrrolidyl)-phenyl) methane
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 1990 |
| Description | The primary objective is to prepare high temperature polymeric materials, especially linear aromatic polyimides, which maintain their integrity and toughness during long exposure times at elevated temperatures. The attained benefits are obtained by first providing the bis (exocyclodiene) bis (4-(3,4-dimethylene-pyrrolidyl)-phenyl) methane, which is a novel material formed from the monomer N-phenyl-3,4-dimethylene-pyrrolidine. This compound undergoes Diels-Alder reaction with a bismaleimide, without the evolution of gaseous by-products, to form the aromatic polyimide bis (4-(3,4-dimethylene-pyrrolidyl)-phenyl) methane. |
| File Size | 265655 |
| Page Count | 4 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19910005105 |
| Archival Resource Key | ark:/13960/t4fn62x0p |
| Language | English |
| Publisher Date | 1990-01-23 |
| Access Restriction | Open |
| Subject Keyword | Refractory Materials Diels-alder Reactions Toughness Phenyls Aromatic Compounds By-products Polyimides Copolymerization Monomers Bismaleimide Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Patent |
