NASA NTRS · 19910004253
Vinyl capped addition polyimides
Abstract
Polyimide resins having improved thermo-oxidative stability are provided having aromatic vinyl end-caps. The polyimides are prepared by the reaction of a mixture of monomers comprising (1) a diamine, (2) an ester of tetracarboxylic acid and (3) an aromatic vinyl compound in a molar ratio of 1:2:3 of n: (n + 1):2 when the aromatic vinyl compound contains nitrogen and in a ratio of (n + 1):n:2 when the aromatic vinyl compound does not contain nitrogen, wherein n ranges from about 5 to about 20.
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Vannucci, Raymond D., Malarik, Diane C., Delvigs, Peter. 1990-10-25. Vinyl capped addition polyimides. https://ntrs.nasa.gov/citations/19910004253
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