摘要：

Vinyl chloride or a mixture of vinyl monomers containing vinyl chloride in the ratio of at least 50 percent of the mixture is subjected in a polymerization vessel to suspension polymerization in an aqueous medium containing a suspending agent and an oil-soluble catalyst. The inner walls as well as the stirring blades and/or the condenser with which the vessel is equipped, are coated with a polar organic compound, dye, and/or pigment. The amount of polymer scale deposited on the inner walls of the vessel is reduced.

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