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Polyimides prepared from perfluoroisopropylidene diamine
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 1978 |
| Description | This invention relates to a novel aromatic diamine and more particularly to the use of said diamine for the preparation of thermally stable high-molecular weight polymers including, for example, polyamides, polyamideimides, polyimides, and the like. This diamine is obtained by reacting a stoichometric amount of a disodium salt of 2,2-bis(4-hydroxyphenyl) hexafluoropropane with 4-chloronitrobenzene to obtain an intermediate, 2,2-bis[4-(4-nitrophenoxy)phenyl] hexafluoropropane, which is reduced to the corresponding 2,2-bis[4-(4-aminophenoxy)phenyl] hexafluoropropane. |
| File Size | 328814 |
| Page Count | 5 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20080006898 |
| Archival Resource Key | ark:/13960/t0tr0q65m |
| Language | English |
| Publisher Date | 1978-09-05 |
| Access Restriction | Open |
| Subject Keyword | Nonmetallic Materials Polyamide Resins Diamines Patents Thermal Stability Molecular Weight Polyimides Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Patent |
