Effect of the structure of the initial reactants on low-temperature polycondensation

Abstract

O~rLY a relatively limited number of polymers has yet been obtained by low-temperature polyeondensation in the presence of tertiary axaines. In the case of diols the reaction of lowtemperature polycondensation catalyzed by tertiary amines has mainly been used to synthesize polycarbonates [1]. In 1963 Savinov and Sokolov [2] used this method and obtained a polyester based on diane (diphenylolpropane) and oxalic acid chloride. Other authors similarly used tertiary amines in the preparation of polyarylates based on phenolphthalein and ef isophthalic [1, 3] and terephthalic acid chlorides [4], 3,3-di-(4-hydroxyphenyl)oxindol and sebacie, isophthalic, 5-chloroisophthalic and 5-tert-butylisophthalic acid chlorides [1, 3]. In 1968 it was reported that the method of low-temperature polycondensation had been used in the preparation of polyesters based on 4,4'-diphenyloxidedicarboxylic acid chloride and diane, hydroquinone, resorcinol, pyrocatechin, 4,4'-di-(4-hydroxybenzyl)diphenyloxide and 4,4'-di-(4-hydroxybenzyl)diphenylmethane [5]. The synthesis of different polyesters was accompanied by a study of some features of low-temperature polycondensation catalysed by tertiary amines [2, 4, 6-9].