Process for production of stabilized polycarbonate
    21.
    发明授权
    Process for production of stabilized polycarbonate 失效
    生产稳定化聚碳酸酯的方法

    公开(公告)号:US5668202A

    公开(公告)日:1997-09-16

    申请号:US665817

    申请日:1996-06-19

    摘要: A process for the production of a stabilized polycarbonate which comprises melt-polycondensing an aromatic dihydroxy compound and a carbonic acid diester in the presence of a polycondensation catalyst and then, after the reaction mixture shows an intrinsic viscosity of at least 0.1, adding at least one stabilizer selected from the group consisting of specific compounds having a sulfonates group sulfonic acid anhydride group or a sulfate group in an amount of 0.01 to 500 ppm of a polycarbonate to be formed, to form a polycarbonate having a desired intrinsic viscosity.

    摘要翻译: 一种制备稳定化聚碳酸酯的方法,其包括在缩聚催化剂存在下使芳族二羟基化合物和碳酸二酯熔融缩聚,然后在反应混合物的特性粘度至少为0.1之后,加入至少一种 选自具有磺酸基磺酸酐基的特定化合物或硫酸酯基的稳定剂,其量为所形成的聚碳酸酯的0.01至500ppm,以形成具有所需特性粘度的聚碳酸酯。