アクリル酸及びアクリレートプロセスにおける重合及び汚れの抑制方法

摘要

A method of decarboxylating maleic acid to acrylic acid, the method comprising the step of contacting a solution comprising maleic acid with at least 500 ppm of an N-oxyl compound at a temperature of at least 120°C. The preferred N-oxyl compound is 4-hydroxy-TEMPO, in some cases in combination with at least one of Mn(II) and Cu(II).