Anti-fouling agent and method for producing the same
    3.
    发明授权
    Anti-fouling agent and method for producing the same 有权
    防污剂及其制造方法

    公开(公告)号:US07439311B2

    公开(公告)日:2008-10-21

    申请号:US12016479

    申请日:2008-01-18

    摘要: The present invention provides a method for producing a polymer by conducting polymerization in a polymerization reactor having an inner wall covered with an anti-fouling agent comprising an aqueous solution containing a polyvinyl alcohol obtained through saponification of a polyvinyl ester that contains monomer units having a silyl group. In the present invention, the polyvinyl alcohol satisfies the following formulae (I) and (II): 370

    摘要翻译: 本发明提供一种聚合反应器的制造方法,该聚合反应器具有覆盖有防污垢剂的内壁的聚合反应器,该防污剂包含含有聚乙烯醇的水溶液,所述水溶液含有聚乙烯醇,所述聚乙烯醇含有具有甲硅烷基 组。 在本发明中,聚乙烯醇满足下式(I)和(II):<?在线公式描述=“在线公式”end =“lead”?> 370 其中P表示聚乙烯醇的粘度平均聚合度,S表示单体单元的含量(摩尔%) 在聚乙烯醇中具有式(1)的甲硅烷基; <?in-line-formula description =“In-line formula”end =“lead”?> 0.2 / 100 <=(AB)/(B)<= 75/100(II)<? =“In-line Formulas”end =“tail”?>其中A表示聚乙烯醇中的硅原子的含量(ppm),B表示用钠洗涤的聚乙烯醇中的硅原子的含量(ppm) 含氢氧化物的甲醇,然后通过索氏提取用甲醇洗涤。