Patent ID: 7993592

Claim:
A continuous polymerization apparatus comprising: a reaction vessel being substantially cylindrical, having a first end plate flange with a monomer mixture inlet port there through and a second end plate flange at the distal end of the reaction vessel, with a polymer outlet port there through, said first end plate further having a hole, substantially circular, located at a center axis of the cylindrical reaction vessel to pass through a stirring shaft along the axis of the reaction vessel, wherein the reaction vessel includes, at least four polymerization zones adjacent to each other in series, there being a first and a last polymerization zone, along the axis of and inside the reaction vessel, each polymerization zone being separated by a partition plate, each partition plate having an opening located at the center axis of the reaction vessel thereof to pass through the stirring shaft, each of the polymerization zones having a thermosensor for sensing temperature within the polymerization zone, a heating device for heating the polymerization zone and a cooling device for cooling the polymerization zone, and a stirrer including a rotatable stirring shaft along the axis of the reaction vessel extending to be in each polymerization zone, and at least one stirring impeller attached to the stirring shaft which is located within each polymerization zone.