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    METHOD OF PRODUCING A POLYAMIDE
    2.
    发明公开
    METHOD OF PRODUCING A POLYAMIDE 审中-公开
    VERFAHREN ZUR HERSTELLUNG EINES POLYAMIDS

    公开(公告)号：EP3131945A1

    公开(公告)日：2017-02-22

    申请号：EP15717398.0

    申请日：2015-04-09

    Applicant: BASF SE

    Inventor： GRANT, William E. ,  SWANNER, Glenn B. ,  NOON, Eric S. ,  ORTIZ, Cesar G. ,  FLACK, Joseph T. ,  GRUETZNER, Rolf-Egbert

    IPC: C08G69/16

    CPC classification number: C08G69/04 ,  C08G69/16 ,  C08G69/28

    Abstract: A method produces a polyamide having an extractable fraction of oligomer of from 2 to 10 percent. The method includes introducing a monomer into a reactor and polymerizing the monomer to form a first intermediate having an extractable fraction of oligomer of greater than 10 percent, wherein the oligomer is a compound of 2 to 20 units of the monomer. The method includes transferring the first intermediate from the reactor into an extractor and introducing water into the extractor to form a second intermediate having an extractable fraction of oligomer that is less than the extractable fraction of the first intermediate, wherein the water is introduced at a temperature of less than 100° C. and wherein the water includes 0.1 to 3.0 weight percent of a plasticizer. Moreover, the method includes transferring the second intermediate into a dryer and applying air at a temperature of less than 125° C.

    Abstract translation: 一种方法产生具有2-10％低聚物的可提取部分的聚酰胺。 该方法包括将单体引入反应器并使单体聚合以形成具有大于10％的低聚物可提取部分的第一中间体，其中低聚物是2至20单位单体的化合物。 该方法包括将第一中间体从反应器转移到萃取器中并将水引入萃取器中以形成第二中间体，其具有低于第一中间体的可提取部分的低聚物的可萃取部分，其中将水以温度 小于100℃，其中水包括0.1至3.0重量％的增塑剂。 此外，该方法包括将第二中间体转移到干燥器中并在小于125℃的温度下施加空气。

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