Process for producing polymethyl methacrylate

Abstract From the Canadian patent

A continuous process for producing polymethyl methacrylate (PMMA) or its copolymer comprises precooling a monomeric feedstock consisting of methyl methacrylate (MMA) or a mixture of MMA and up to 10 mol% of a highly thermal= radical-forming monomer, forcing the feedstock into a reactor wherein a preceding charge is being circulated under pressure instantaneously mixing the whole charge and cooling it by dint of the sensible heat of the monomeric feedstock while thorough-, ly mixing the hot radicals thus effecting the polymerization, within a short time period continuously taking out from the, reactor the polymerization product and unreacted monomer or monomers being circulatingly mixed, at …