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Preparation and characterization of fluorine-containing aromatic condensation polymers, 5. Aromatic polybenzimidazoles from 4,4′-(hexafluoroisopropylidene)dibenzoic acid and aromatic tetramine tetrahydrochlorides

✍ Scribed by Yasuo Saegusa; Masahiro Horikiri; Shigeo Nakamura

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
358 KB
Volume
198
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

Two novel fluorine‐containing aromatic polybenzimidazoles were synthesized by direct polycondensation of 4,4′‐(hexafluoroisopropylidene)dibenzoic acid with 3,3′‐diaminobenzidine tetrahydrochloride and 1,2,4,5‐benzenetetramine tetrahydrochloride. The effect of introduction of fluorine on the synthesis and properties of these polymers is discussed. The new polybenzimidazoles show good solubility in organic solvents, excellent mechanical properties and high thermal stability.

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