NASA NTRS · 19920006825
Processing for maximizing the level of crystallinity in linear aromatic polyimides
Abstract
The process of the present invention includes first treating a polyamide acid (such as LARC-TPI polyamide acid) in an amide-containing solvent (such as N-methyl pyrrolidone) with an aprotic organic base (such as triethylamine), followed by dehydrating with an organic dehydrating agent (such as acetic anhydride). The level of crystallinity in the linear aromatic polyimide so produced is maximized without any degradation in the molecular weight thereof.
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St.clair, Terry L.. 1991-10-29. Processing for maximizing the level of crystallinity in linear aromatic polyimides. https://ntrs.nasa.gov/citations/19920006825
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