Abstract:
Propylene glycol methyl ether acetate was prepared by esterification of acetic acid with propylene glycol monomethyl ether. The solid catalyst titanium sulfate was in chemical purity grade. The effects of molar ratio of acetic acid to propylene glycol monomethyl ether, the amout of catalyst and the water carrying agent and reaction time on the conversion, and also the operation conditions of distillation tower were studied. The results show that the optimum conditions are molar ratio of acetic acid to propylene glycol monomethyl ether being 1.60, weight of catalyst being 3.5%, molar ratio of water carrying ~agent to propylene glycol monomethyl ether being 5.16, reaction time being 3.5 h. On these conditions, the conversion of propylene glycol monomethyl ether reaches 100%.