Terpolymer having aromatic polyester, polysiloxane and polycarbonate
segments
    4.
    发明授权
    Terpolymer having aromatic polyester, polysiloxane and polycarbonate segments 失效
    具有芳族聚酯,聚硅氧烷和聚碳酸酯链段的三元共聚物

    公开(公告)号:US5932677A

    公开(公告)日:1999-08-03

    申请号:US68445

    申请日:1993-05-27

    CPC分类号: C08G77/448

    摘要: Terpolymers suitable as molding resins are provided having aromatic polyester segments polycarbonate segments and polysiloxane segments of the structure ##STR1## where R.sup.1, R.sup.2, Y and D are as defined herein, and where the weight percentage of polyester and polycarbonate segments is from 50 to 99%, preferably 92 to 96%, and the weight percentage of polysiloxane segments is from 50 to 1%, preferably from 8 to 4%. Also provided is a one-step process to prepare the new terpolymers by reacting together a siloxane, a bisphenol and an aromatic dicarboxylic acid halide.

    摘要翻译: 提供适合作为模制树脂的三元共聚物,其具有芳族聚酯链段聚碳酸酯链段和结构的聚硅氧烷链段,其中R 1,R 2,Y和D如本文所定义,并且其中聚酯和聚碳酸酯链段的重量百分数为50-99% 92〜96%,聚硅氧烷链段的重量百分比为50〜1%,优选为8〜4%。 还提供了通过使硅氧烷,双酚和芳族二羧酸卤化物反应而制备新的三元共聚物的一步法。

    Process for the preparation of polycarbonates
    8.
    发明授权
    Process for the preparation of polycarbonates 失效
    聚碳酸酯的制备方法

    公开(公告)号:US5336750A

    公开(公告)日:1994-08-09

    申请号:US20502

    申请日:1993-02-22

    CPC分类号: C08G64/307

    摘要: A process for the preparation of a polycarbonate comprising reacting a diaryl carbonate with a bisphenol to produce a polycarbonate and a phenol, regenerating the diaryl carbonate by reacting the phenol byproduct with a carbonyl halide, and optionally recycling the hydrogen halide using a metal Redox captive halogen swing reactor system.

    摘要翻译: 一种制备聚碳酸酯的方法,包括使碳酸二芳基酯与双酚反应以制备聚碳酸酯和苯酚,通过使苯酚副产物与羰基卤反应再生碳酸二芳基酯,并且任选地使用金属氧化还原电荷卤素 摆动反应堆系统。