METHOD TO MANUFACTURE PLA USING A NEW POLYMERIZATION CATALYST
    2.
    发明公开
    METHOD TO MANUFACTURE PLA USING A NEW POLYMERIZATION CATALYST 审中-公开
    VERFAHREN ZUR HERSTELLUNG VON PLA ANHAND EINES NEUEN聚合物分析仪

    公开(公告)号:EP2992029A1

    公开(公告)日:2016-03-09

    申请号:EP14721811.9

    申请日:2014-04-29

    申请人: PURAC Biochem BV

    IPC分类号: C08G63/82 C08G63/85

    摘要: The invention relates to a method for manufacturing polylactide, comprising the steps of mixing lactide and a metal-coordination compound as polymerization catalyst to obtain a reaction mixture, polymerizing the lactide in liquid phase at a temperature of at least 150°C to form polylactide in liquid phase and allowing the polylactide to solidify, characterized in that the polymerization catalyst comprises a metal-ligand coordination compound whereby the parent ligand answers the formula (I), whereby R represents an H atom, an aliphatic group, a halide atom or a nitro group and the metal is at least one of Zr and Hf. The invented catalysts show kinetics which is comparable to the kinetics of the known Sn-octoate catalyst.

    摘要翻译: 本发明涉及一种制备聚丙交酯的方法,包括以下步骤:将丙交酯和金属配位化合物作为聚合催化剂混合以获得反应混合物,在至少150℃的温度下使液相中的丙交酯聚合以形成聚丙交酯 液相,并允许聚交酯固化,其特征在于聚合催化剂包含金属 - 配体配位化合物,由此母体配体回答式(I),其中R表示H原子,脂族基团,卤素原子或硝基 并且金属是Zr和Hf中的至少一种。 本发明的催化剂显示出与已知的Sn-辛酸酯催化剂的动力学相当的动力学。