Process for manufacturing homo- and copolyesters of Lactic acid
    2.
    发明授权
    Process for manufacturing homo- and copolyesters of Lactic acid 失效
    制备乳酸的同型和共聚酯的方法

    公开(公告)号:US06657042B2

    公开(公告)日:2003-12-02

    申请号:US10102064

    申请日:2002-03-19

    IPC分类号: C08G6382

    CPC分类号: C08G63/823 C08G63/08

    摘要: A process is provided for manufacturing homo- and copolyesters of lactic acid by ring scission polymerization of its cyclic monomers in the presence of an initiator. Polymerization is carried out in the molten phase in the presence of an initiator system containing a compound of tin and at least one additional initiator chosen from the compounds of metal of the fourth subgroup.

    摘要翻译: 提供了一种通过其引发剂存在下环状单体的环断裂聚合来制备乳酸的均聚物和共聚酯的方法。 在含有锡化合物和至少一种另外的引发剂的引发剂体系存在下,在熔融相中进行聚合,所述引发剂选自第四亚组的金属化合物。