Process for purification of methyl methacrylate using molecular sieve membranes

Li, S., Zhou, S., & Yu, M. (2016). Process for purification of methyl methacrylate using molecular sieve membranes (Patent No. 9,487,469.)

A method for separating the components of a mixture containing methyl methacrylate, water, and methanol in which the mixture is dehydrated in a first stage membrane unit, producing a dehydrated mixture. Methanol in the dehydrated mixture is removed in a second stage membrane unit, producing a retentate stream containing methyl methacrylate and substantially no said methanol.