Batch process for the production of polycarbonate by interfacial
polymerization
    5.
    发明授权
    Batch process for the production of polycarbonate by interfacial polymerization 有权
    通过界面聚合生产聚碳酸酯的分批方法

    公开(公告)号:US6103855A

    公开(公告)日:2000-08-15

    申请号:US281497

    申请日:1999-03-30

    CPC分类号: C08G64/24 C08G64/14

    摘要: A method of preparing a polycarbonate comprising the steps of:a) charging at least one dihydroxy compound, an inert solvent, water, caustic, carbonyl halide, and catalyst to a vessel, and maintaining the pH of the reaction mixture between about 4 and about 12 during charging; andb) within an interval of between 0 and about 90% of the total carbonyl halide addition to the vessel, activating a reaction system that produces monofunctional aromatic chloroformates (MAC) and introducing the MAC to the vessel within the interval of 0 to about 90% of the total carbonyl halide addition to the vessel; where the MAC reaction system is coupled with the vessel, and where means are provided for delivery of the MAC from the reaction system to the vessel.

    摘要翻译: 一种制备聚碳酸酯的方法,包括以下步骤:a)将至少一种二羟基化合物,惰性溶剂,水,苛性碱,羰基卤化物和催化剂装入容器中,并将反应混合物的pH保持在约4和约 充电时12 和b)在添加到容器中的总羰基卤的0至约90%的间隔内,激活产生单官能芳族氯甲酸酯(MAC)并在0至约90的间隔内将MAC引入容器的反应体系 添加到容器中的总羰基卤的百分比; 其中MAC反应系统与容器结合,并且其中提供用于将MAC从反应系统输送到容器的装置。