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Polyimides by Diels-Alder polyaddition of α-pyrones

✍ Scribed by Gamil Alhakimi; Helmar Görls; Elisabeth Klemm

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
250 KB
Volume
195
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

New linear polyimides 11 were synthesized via Diels‐Alder addition polymerization of α‐pyrones 9 with bismaleimides 10. The number‐average molecular weights M~n~ range from 10 000 to 34 000 g. mol (gel‐permeation chromatography). The chemical structure of these polymers is supported by X‐ray crystallography, NMR spectra and model reactions. The Diels‐Alder addition occurred with high endo selectivity.

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