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Preparation and properties of new wholly aromatic polyesters containing a terphenyl analogue of 1,3,4-thiadiazole in the main chain

✍ Scribed by Moriyuki Sato; Susumu Takeuchi; Ryoji Hino

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 55 KB
Volume: 20
Category: Article
ISSN: 1022-1336
DOI: 10.1002/(sici)1521-3927(19990701)20:7<373::aid-marc373>3.0.co;2-b

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✦ Synopsis

Novel wholly aromatic polyesters 8 containing a terphenyl analogue of 1,3,4-thiadiazole (2,5diphenyl-1,3,4-thiadiazole) in the main chain were synthesized by high-temperature solution polycondensation of a diacyl chloride derivative of 2,5-diphenyl-1,3,4-thiadiazole 6 with four hydroquinones 7 in 1-chloronaphthalene. These polymers 8 are insoluble in most organic solvents and decompose very rapidly above 400 8C in air without showing thermotropic liquid crystalline melts.

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