| abstract |
PROBLEM TO BE SOLVED: To produce no abnormal reaction part by bringing a stirring blade and a baffle plate, a heat exchanger, etc. suitable for a reaction, especially a solution polymerization method and a bulk polymerization method, and to cause an initial stage of polymerization. Alternatively, it is an object of the present invention to provide an excellent reactor which can provide a sufficient share at the start and end of the polymerization, and in some cases even when the reactor is washed with a solvent or the like. A cylindrical reactor having a liquid inlet and a liquid outlet and having a structure elongated in a liquid flow direction, wherein at least a stirring shaft and a plate extending substantially perpendicular to the shaft extend in the reactor. Having one or more blade-shaped or rod-shaped wings, a plate-shaped or rod-shaped or a combination thereof in a reactor, A tube, a plate or a spiral heat exchanger or other internal structure, the blades being close to the baffle plate or a reactor internal structure such as a heat exchanger, the distance of which is at most 50 mm; Wherein the natural frequency of the blade is 40 Hz or more. |