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Liquid-crystalline polyimides, 16. Chiral thermotropic copoly(ester-imide)s based on isosorbide and N-(4-carboxyphenyl)trimellitimide

✍ Scribed by Hans R. Kricheldorf; Nicolas Probst

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
525 KB
Volume
16
Category
Article
ISSN
1022-1336

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✦ Synopsis

A series of chiral copoly(ester-imide)s was prepared by polycondensation of N-(Ccarboxy-pheny1)trimellitimide with mixtures of isosorbide and phenylhydroquinone. All copolyesters are non-crystalline. They form a cholesteric melt, when containing more than 50 mol-% of phenylhydroquinone. Containing 5 or 10 mol-% of isosorbide a "Grand-Jean" texture is detected above 300 "C and 350°C, respectively.

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