利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

7 条记录 (耗时 0.009 秒)

    Method for the continuous preparation of aromatic polycarbonate having a high molecular weight
    1.
    发明公开
    Method for the continuous preparation of aromatic polycarbonate having a high molecular weight 失效
    赫尔斯特朗·赫尔斯特朗

    公开(公告)号：EP0472849A1

    公开(公告)日：1992-03-04

    申请号：EP91110417.2

    申请日：1991-06-24

    申请人： GENERAL ELECTRIC COMPANY

    发明人： Van Hout, Hendricus Hubertus Maria ,  Oyevaar, Martin Herke ,  Held, Bert Jan

    IPC分类号： C08G64/30

    CPC分类号： C08G64/30

    摘要： The invention relates to a method of preparing aromatic polycarbonate having a high molecular weight by boundary face condensation of carbonate oligomer in the presence of an aromatic monohydroxy compound as a chain stopper, base, water and organic solvent at a temperature of at most 70 C, in which the components, among which the chain stopper, are mixed in static mixers to form a fine dispersion, reacting these in a residence zone with plug flow and repeating these steps at least once.

    摘要翻译： 本发明涉及通过在芳族单羟基化合物作为链终止剂，碱，水和有机溶剂的存在下，在70℃以下的碳酸酯低聚物的边界面缩合制备具有高分子量的芳族聚碳酸酯的方法 其中将链式阻塞剂的组分混合在静态混合器中以形成细分散体，使它们在停留区中与活塞流反应并重复这些步骤至少一次。

    Method for the continuous preparation of carbonate oligomers
    4.
    发明公开
    Method for the continuous preparation of carbonate oligomers 失效
    Verfahren zur kontinuierlichen Herstellung von Carbonatoligomeren。

    公开(公告)号：EP0472848A1

    公开(公告)日：1992-03-04

    申请号：EP91110416.4

    申请日：1991-06-24

    申请人： GENERAL ELECTRIC COMPANY

    发明人： van Hout, Hendricus Hubertus Maria ,  Oyevaar, Martin Herke ,  Held, Bert Jan

    IPC分类号： C08G64/24

    CPC分类号： C08G64/24 ,  B01J19/1881 ,  B01J19/2435

    摘要： The invention relates to a method for the continuous preparation of carbonate oligomers by boundary face oligomerisation of aromatic dihydroxy compounds with phosgene while adding base, in which the reaction is carried out in a loop-like reactor system in the absence of chain stopper and while using less than 200 ppm of catalyst related to the organic solvent using at least one static mixer and plug folw, optionally in combination with a stirred tank reactor.

    摘要翻译： 本发明涉及一种连续制备碳酸酯低聚物的方法，其通过芳香族二羟基化合物与光气的边界面低聚反应，同时加入碱，其中反应在不存在链终止剂的环状反应器系统中进行，同时使用 使用至少一种静态混合器和塞子，与有机溶剂相关的催化剂少于200ppm，任选地与搅拌釜反应器组合。

    Method of preparing chloroformiate compounds
    7.
    发明公开
    Method of preparing chloroformiate compounds 失效
    Methode zur Herstellung von Chlorformiatverbindungen。

    公开(公告)号：EP0596206A1

    公开(公告)日：1994-05-11

    申请号：EP93113315.1

    申请日：1993-08-20

    申请人： GENERAL ELECTRIC COMPANY

    发明人： Van Hout, Henricus Hubertus Maria ,  Maas, Christianus Joannes Jacobus ,  Van der Wekke, Laurus ,  Oyevaar, Martin Herke

    IPC分类号： C07C68/02 ,  C07C69/96 ,  C08G64/14

    CPC分类号： C08G64/14 ,  C07C68/02 ,  C07C69/96

    摘要： The invention relates to a method of preparing a compound of formula 1

    wherein R i , R 2 and R 3 correspond to H, a branched or non-branched, optionally substituted alkyl group, or an optionally substituted aryl group, suitable as a chain stopper in the preparation of an aromatic polycarbonate, by reaction of a compound of formula 2

    wherein Ri, R 2 and R 3 have the meanings described hereinbefore, with phosgene, comprising the continuous supply of the compound of formula 2 and phosgene to a solution of phosgene in a solvent, the temperature being kept at a value between 0 and 15°C and the pH being kept at a value between 1 and 6.

    摘要翻译： 本发明涉及制备式1化合物的方法，其中R 1，R 2和R 3对应于H，支链或非支链的任选取代的烷基或任选取代的芳基，适合作为链终止剂 在芳香族聚碳酸酯的制备中，通过使光化学式2的化合物（其中R1，R2和R3具有上述含义）的式2化合物反应，包括将式2化合物和光气连续供给到 光气在溶剂中，温度保持在0至15℃之间，pH值保持在1和6之间。