METHOD FOR PURIFYING POLYMER AND METHOD FOR PRODUCING POLYMER USING THE SAME
    1.
    发明申请
    METHOD FOR PURIFYING POLYMER AND METHOD FOR PRODUCING POLYMER USING THE SAME 审中-公开
    纯化聚合物的方法和使用该聚合物制备聚合物的方法

    公开(公告)号:US20110021742A1

    公开(公告)日:2011-01-27

    申请号:US12934534

    申请日:2009-03-27

    IPC分类号: C08F6/08

    CPC分类号: C08G63/90 C08F6/005 C08F6/02

    摘要: The present invention provides a method for purifying a polymer, by which a reduction in molecular weight of the polymer can be suppressed, and a residual catalyst in the polymer can be reduced effectively. The polymer containing the residual catalyst is brought into contact with an organic solvent containing an organic acid that has a pKa in the range of 2 to 3.9. Thus, the catalyst remaining in the polymer can be reduced, and the polymer can be purified. The organic acid can be, for example, lactic acid.

    摘要翻译: 本发明提供一种纯化聚合物的方法,通过该方法可以抑制聚合物的分子量的降低,并且能够有效降低聚合物中的残留催化剂。 含有残留催化剂的聚合物与含有pKa在2〜3.9范围内的有机酸的有机溶剂接触。 因此,可以减少残留在聚合物中的催化剂,并且可以纯化聚合物。 有机酸可以是例如乳酸。