Abstract
New polyesters have been prepared by solution and interfacial polycondensation of acid chlorides obtained from bis-α,ω-polymethylene-[(2-methoxy)phenoxy]acetic acids, acid-ether siderophores AEn (n being the number of methylene units), and diols including bisphenol A, ethylene glycol and propanediol. For interfacial polycondensation, average molecular weights range from 1000 to 4500 g mol−1; at higher temperature the molecular weights increase but the yield is smaller. Differential scanning calorimetry shows Tg ranging from −5 to + 110 °C. Polyesters are crystalline with n = 6 and amorphous with n = 2 and 4; in addition, increasing n in AEn increases molecular weights and Tg values. In solution polycondensation, the average molecular weights are around 3000 g mol−1 and Tg is low. © 2001 Society of Chemical Industry
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