PRODUCTION OF BOTH ESTER AMIDE AND POLYESTERAMIDE

摘要

PROBLEM TO BE SOLVED: To simpler and more economically obtain ester amides and polyesteramides through a fewer processes without requiring the complicated purification of an intermediate by the transesterification of a dialkyl terephthalate. SOLUTION: This method is to conduct the transesterification of (A) a dialkyl terephthalate into (B) an alkyl aryl terephthalate so as to making the component B exist in the reaction product, to catalytically react the reaction product with an alkylene diamine so as to form a bis-ester amide by reacting at least a portion of the component B with the above alkyl alkylene or arylene diamine and to polymerize the bis-ester amide with a diol to form a polyesteramide. The transesterification is preferably carried out by reacting the component A with a suitable phenoxy derivative such as a diphenyl terephthalate.