Patent ID: 9522381
Filing Date: 2016-12-20
CPC Classification: B01J,C07C,C08F,C09D,C09J

Claim Text:
1. A plant for producing a methylene malonate monomer comprising: at least one diol production unit comprising a diol reactor apparatus capable of reacting a dialkyl malonate ester and a source of formaldehyde in the presence of a catalyst, at least one diol purification unit comprising an ion-exchange column and a short heat residence time apparatus capable of performing an evaporation step, at least one monomer production unit comprising a plurality of catalyst columns and at least one heating apparatus for maintaining the temperature of the plurality of catalyst columns, and at least one monomer purification unit comprises a condensation apparatus, a fractional distillation apparatus, or both; wherein the at least one diol production unit is in communication with the at least one diol purification unit, the at least one diol purification unit is in communication with the at least one monomer production unit, and the at least one monomer production unit is in communication with the at least one monomer purification unit.