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Synthesis of Oligo-ethyleneglycol Ethyl Ether Acetate from Ethyl Acetate Inserted by Ethylene Oxide

Fang Yun

Abstract

A process was reported to produce oligo-ethyleneglycol ethyl ether acetate by inserting ethylene oxide(EO) between the carbonyl and ethoxy group of ethyl acetate(EA) over special acid-base catalyst.The product was characterized by FTIR and ESI-MS. It was found by GC that the catalyst AB-5 has the highest product selectivity of ethyleneglycol ethyl ether acetate(EGEEA).The optimum selectivity of w(EGEEA)=51.5% was obtained under following reaction conditions:the amount of catalyst 1.1 g/100 g ethyl acetate,the initial pressure 0.1 MPa,the reaction temperature 145～150 ℃,the molar ratio of EA to EO 5∶1 and the feed rate of EO 0.25 g/min.

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Key concepts: Ethyl acetate, Chemistry, Catalysis, Ethylene oxide, Selectivity, Ether, Ethylene, Nuclear chemistry