Direct Ethoxylation of Butyl Acrylate with Narrow Adduct Distribution

摘要

One-pot production of ethylene glycol monobutyl ether acrylate was achieved by direct ethoxylationrnof butyl acrylate, using a Al-Mg composite oxide catalyst. Mass percentage of ethylene glycol monobutyl etherrnacrylate in the crude product was 40.3% after 30min reaction at 150-155 ℃ when a molar ratio of 2:1(butylrnacrylate to ethelene oxide) was employed. The catalyst activity was 0.35gEO/(g cat ? min).rn4-oxo-2,2,6,6-tetramethyl piperdine-1-oxyl was found the most effective inhibitor to prevent self-polymerizationrnof butyl acrylate during the ethoxylation.