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    • 8. 发明公开
    • Method for polymerizing vinyl chloride
    • 维生素zur聚合乙烯基氯化物。
    • EP0440952A2
    • 1991-08-14
    • EP90124578.7
    • 1990-12-18
    • MITSUI TOATSU CHEMICALS, Inc.
    • Masuko, SeiichiNakamura, IchisaburoFukuda, KeiichiHatakeyama, YasuyukiYamaguchi, AkihiroYamaguchi, Keizaburo
    • C08F2/00C08F114/00
    • C08F2/004
    • A method for polymerizing vinyl chloride comprises polymerizing vinyl chloride in an aqueous medium or bulk-polymerizing vinyl chloride, wherein the inner wall of a polymerizer and parts of devices which come in contact with the monomer during the polymerization are coated, prior to the polymerization, with a reaction product having a molecular weight ranging from 500 to 100,000, obtained by condensing a polyhydric phenol and sulfur dichloride in the presence of a Lewis acid as a catalyst. The amount of the polymer adhered to the polymerizer during polymerization of vinyl chloride is substantially lowered and the adhered polymer can be easily washed away through simple water washing according to the foregoing method. Moreover, the method does not adversely affect the reaction time and the quality of the resulting product at all.
    • 聚合氯乙烯的方法包括在水性介质或本体聚合氯乙烯中聚合氯乙烯,其中在聚合之前聚合反应器的内壁和聚合期间与单体接触的部件装置被涂覆, 通过在作为催化剂的路易斯酸的存在下将多元酚和二氯化硫缩合得到的分子量为500〜100,000的反应产物。 在氯乙烯聚合期间粘附到聚合器上的聚合物的量基本上降低,并且根据前述方法,通过简单的水洗可以容易地将附着的聚合物洗去。 此外,该方法根本不会对所得产物的反应时间和质量产生不利影响。