A method of preventing polymer scale formation in a polymerization vessel during the polymerization of a monomer having an ethylenically double bond, wherein said polymerization is carried out in a polymerization vessel in which its inner wall surface is previously coated with a water-based coating solution containing (A) a water-soluble anionic dye and (B) at least one member selected from the group consisting of water-insoluble cationic dyes and water-insoluble nitrogen-containing organic compounds and having a pH of 7 or less and then dried to form a coating. This method can effectively prevent scale formation in the polymerization of extensive manomers having an ethylenically double bond.
一种防止具有
乙烯双键的单体聚合过程中在聚合容器中形成聚合物垢的方法,其中所述聚合在聚合容器中进行,聚合容器的内壁表面先前涂有
水基涂层溶液,该涂层溶液含有(A)
水溶性阴离子
染料和(B)至少一种选自不溶于
水的
阳离子染料和不溶于
水的含氮有机化合物组成的组的成员,pH值为7或更低,然后干燥形成涂层。这种方法可以有效地防止具有
乙烯双键的广聚物聚合过程中结垢。