| Abstract: | The reaction promoted by a Vilsmeier adduct derived from diphenyl chlorophosphate and N,N-dialkylcarboxamides such as N,N-dimethylformamide was successfully used for the preparation of soluble copolyesteramides directly from aromatic dicarboxylic acids, bisphenols, and a wide range of mole percent diamines. The polycondensation was affected by the carboxamides used, and an attempt was made to explain the effect by the ester sequence in polyamide units by examining a competitive reaction of benzoic acid with a phenol and an aniline and by examining the thermal properties of the copolymers produced. |
