Melt polymerization reactor system and method
    93.
    发明公开
    Melt polymerization reactor system and method 有权
    熔体聚合反应器系统和方法

    公开(公告)号:EP2559719A1

    公开(公告)日:2013-02-20

    申请号:EP11382282.9

    申请日:2011-08-19

    IPC分类号: C08G64/30

    摘要: A reactor system for producing polycarbonate includes a surface area in contact with.a reaction mixture. The reaction mixture comprises a melt transesterification catalyst, a dihydroxy compound, a diaryl carbonate, and an phenolic byproduct. The surface area in contact with the reaction mixture contains one or more welds joining reactor system parts. All welds in contact with the reaction mixture join reactor system parts made from the same type of metal. If a filler metal is contained in the weld, the filler metal is made from the same type of metal as the metal parts joined by the weld.

    摘要翻译: 用于生产聚碳酸酯的反应器系统包括与反应混合物接触的表面区域。 反应混合物包含熔融酯交换催化剂,二羟基化合物,碳酸二芳基酯和酚类副产物。 与反应混合物接触的表面区域包含连接反应器系统部件的一个或多个焊缝。 与反应混合物接触的所有焊缝都连接由相同类型金属制成的反应器系统部件。 如果填充金属包含在焊缝中,则填充金属由与焊接接合的金属部件相同类型的金属制成。

    METHOD OF MAKING POLYCARBONATE
    94.
    发明公开
    METHOD OF MAKING POLYCARBONATE 有权
    用于生产聚碳酸酯

    公开(公告)号:EP2550313A1

    公开(公告)日:2013-01-30

    申请号:EP11718156.0

    申请日:2011-03-14

    IPC分类号: C08G64/30

    CPC分类号: C08G64/305

    摘要: A method of making a polycarbonate is described. The method comprises reacting an activated diaryl carbonate and a dihydroxy compound at a reaction temperature in a reactor to form a reaction mixture wherein the reactor comprises a heated cover and an open space between the cover and the reaction mixture. The dihydroxy compound comprises a vapor pressure greater than or equal to 0.01 kilo Pascals at the reaction temperature and the temperature of the open space in the reactor, the temperature of the cover, or the temperature of the open space and the cover is greater than or equal to the melt temperature of the monomer having the highest melt temperature.

    Late-addition catalyst formulation, reactor system, and method for producing polycarbonate
    95.
    发明公开
    Late-addition catalyst formulation, reactor system, and method for producing polycarbonate 有权
    后期添加催化剂配方,反应器系统和方法,用于生产聚碳酸酯的

    公开(公告)号:EP2540758A1

    公开(公告)日:2013-01-02

    申请号:EP11382217.5

    申请日:2011-06-29

    IPC分类号: C08G64/20 C08G64/30

    摘要: The present invention provides a melt polymerization reactor system and method of producing polycarbonate using a late-addition catalyst formulation having a melt transesterification catalyst dispersed in a liquid carrier system which preferably includes less than 10 wt% water. The formulation also preferably includes a liquid carrier system having phenol and a cosolvent. The melt transesterification catalyst can be present in the formulation in a range of 50 ppm to 60,000 ppm.

    摘要翻译: 本发明提供了使用具有分散在液体载体系统,该系统优选地包括小于10重量%的水的熔融酯交换催化剂后期添加催化剂制剂生产聚碳酸酯的熔融聚合反应器系统和方法。 所以该制剂优选地包括具有苯酚和助溶剂的液体载体系统。 熔融酯交换催化剂可以是存在于一个范围的50ppm至60000 ppm的制剂中。