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    Process for separating volatile components from polymers
    5.
    发明授权
    Process for separating volatile components from polymers 失效
    挥发性组分与聚合物分离的方法

    公开(公告)号：US07144981B2

    公开(公告)日：2006-12-05

    申请号：US10684600

    申请日：2003-10-14

    申请人： Thomas König ,  Klemens Kohlgrüber ,  Ulrich Liesenfelder ,  Michael Bierdel ,  Helmut Meyer ,  Richard Weider ,  Jörg Krüger

    发明人： Thomas König ,  Klemens Kohlgrüber ,  Ulrich Liesenfelder ,  Michael Bierdel ,  Helmut Meyer ,  Richard Weider ,  Jörg Krüger

    IPC分类号： C08F6/00

    CPC分类号： C08F6/003

    摘要： A process for concentrating polymers by evaporation is disclosed. The process entails (i) obtaining a mixture containing a polymer and volatile component, the volatile components being present in the mixture at an amount less than 20 wt. % relative to the weight of the mixture, and (ii) introducing the mixture in a downward direction under pressure through a plurality of nozzles arranged vertically and next to one another into a degassing container to form an extrudate. The volatile component contains at least one of residual monomers, oligomers and solvents, and the throughput of the mixture per nozzle is 0.3 to 2 kg/h. The vapor pressure of the volatile component of the extrudate is more than 2.5 bar, and the absolute pressure in the degassing container is 50 to 5000 Pa. The polymer prepared by the process is characterized in that it contains volatile components in an amount of less than 300 ppm.

    摘要翻译： 公开了通过蒸发浓缩聚合物的方法。 该方法需要（i）获得含有聚合物和挥发性组分的混合物，所述挥发性组分以小于20重量％的量存在于混合物中。 相对于混合物重量的％，和（ii）通过垂直且彼此相邻布置的多个喷嘴在压力下向下引入混合物到脱气容器中以形成挤出物。 挥发性组分含有残留单体，低聚物和溶剂中的至少一种，并且每个喷嘴的混合物的生产量为0.3至2kg / h。 挤出物的挥发性成分的蒸气压大于2.5巴，脱气容器中的绝对压力为50〜5000Pa。本方法制备的聚合物的特征在于，其含有挥发性成分的量小于 300 ppm。