芳香聚碳酸酯合成工艺进展

本文介绍了聚碳酸酯的 3种合成工艺 ,即界面缩聚法、非光气法、氧化羰基化法。界面缩聚法工艺易于生成较高分子量聚合物 ,产品适于作片材 ,界面聚合聚碳酸酯在某些终端应用上具有一定优势 ,较长一段时期内不会退出市场 ;非光气法产品纯度较高、光学性能好、透明度高 ,适合光学应用 ,但高温下稳定性相对较低 ,不适用于注模 ;氧化羰基化法具有前两种方法没有的优点 ,是一种安全高效的绿色工艺 ,原料来源广泛、廉价 ,三废少、产品质量高 ,在 2 1世纪必将有大的发展前途。

Progress of Production Technology for Aroma Polycarbonate

In this article three main technologies for producing polycarbonate are introduced i.e. the interfacial polycondensation method, non phosgene method and oxidation carbonylation method. Polycarbonate with high molecular weight suited to producing sheet can be produced with interfacial polycondensation method. Polycarbonate based on interfacial condensation wouldn't exit from market for a definite time because it has proper advantages in some end uses. Products made from non phosgene method feature high purity, good optics characters and good transparency suitable in optics application, but it is unstable at high temperature and can't be used in injection molding. Oxidation carbonylation method is a safe, high effective and green technology with special advantages over the above two methods and it will has great developing prospect in the 21st century thanks to the wide raw materials sources, low cost, less wastes and high quality.