Abstract
AbstractNumerous polyesters were prepared from 1,2‐ethanediol, 1,3‐propanediol, 1,4‐butanediol, 1,6‐hexanediol, 1,12‐dodecanediol, 1,4‐phenylenedimethanol, and hydroquinone on the one hand and succinyl chloride, glutaroyl chloride, adipoyl chloride, suberoyl chloride, sebacoyl chloride, isophthaloyl chloride, and tetephthalolyl chloride on the other hand. The 13C NMR spectra of all polyesters were measured in trifluoroacetic acid and relationships between the structure of the monomeric units and the chemical shifts of the carbonyl and OCH2‐signals were established. Copolyesters were prepared either by cocondensation of two diacid dichlorides and two diols or by thermal transesterification of two homopolyesters. The 13C NMR spectra allow one to distinguish copolyesters from mixtures of corresponding homopolyesters and they allow the determination of the length of homogeneous blocks.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
