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Direct synthesis of aromatic polyesters by use of a sulfonium salt derived from tosyl chloride and N-methylimidazole

✍ Scribed by Higashi, Fukuji ;Ozawa, Michihide ;Chang, Teh-Chon

Publisher: John Wiley and Sons
Year: 1985
Weight: 381 KB
Volume: 23
Category: Article
ISSN: 0360-6376
DOI: 10.1002/pol.1985.170230509

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✦ Synopsis

Abstract

A sulfonium salt derived from tosyl chloride and N‐methylimidazole was successfully used as an effective condensing agent for the preparation of high‐molecular‐weight aromatic polyesters by the direct polycondensation of aromatic dicarboxylic acids and bisphenols. Conditions for the formation of the sulfonium salt and of the reaction of the salt with dicarboxylic acids favorable for the polycondensation were examined. Thermal property of a polymer was investigated in terms of random sequences of monomer in the polymer backbone. Preparation of a polyamide and a polyesteramide was attempted with limited success.

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