| 摘要 |
PROBLEM TO BE SOLVED: To provide a process for producing a vinyl chloride resin whereby the polymerization cycle can be shortened by using a large polymerizer, the formation of coarse particles of the obtained vinyl chloride resin can be prevented, and the formation of fish eyes in a molding can be reduced. SOLUTION: In polymerizing a vinyl chloride monomer in the presence of a polymerization initiator and a dispersant in an aqueous medium, the vinyl chloride monomer and the aqueous medium are fed into the polymerizer while they are being mingled with each other in the upper space of the reactor. It is desirable that the polymerization is performed by using a polymerizer having an internal volume of 40 m3 or above and provided with a reflux condenser.
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