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    • 5. 发明公开
    • 폴리아미드의 제조 방법
    • 生产聚酰胺的方法
    • KR1020090124951A
    • 2009-12-03
    • KR1020090045938
    • 2009-05-26
    • 미츠비시 가스 가가쿠 가부시키가이샤
    • 구로세히데유키시노하라가츠미기쿠치미노루간다도모미치
    • C08G69/28C08G69/26B01J19/00
    • B01F7/00116B01F7/00166B01F7/00291B01F7/00408B01F7/005B01J19/0066B01J19/18B01J2219/00029B01J2219/00189C08G69/28
    • PURPOSE: A process for producing polyamide is provided to suppress the attachment of a polymer or oligomer for a stirrer, to reduce regular washing, to increase production efficiency, and obtaining polyamide with little mixing of unreacted material. CONSTITUTION: A process for producing polyamide comprises directly melt polymerizing a diamine component, which comprises 70% by mole or more of xylylenediamine comprising 20% by mole or more of para-xylylenediamine, and a dicarboxylic acid component in the substantial absence of solvents in a reaction apparatus of the batch type, wherein a stirring apparatus disposed in the reaction apparatus and used for stirring the melted polymer in the apparatus comprises: (i) a rotating shaft connected to a driving member for stirring, (ii) two or more stirring rods disposed in the substantially vertical direction which are cylinder-shaped members or plate-shaped members moving along the circumference of a circle having the center at the rotating shaft, and (iii) a connecting member which connects the rotating shaft and the stirring rods; distances between the center line of the rotating shaft and center lines of the two or more stirring rods are each 15% or greater of the inner diameter of the reaction apparatus; the connecting member and the rotating shaft are disposed above the liquid surface of the melted polymer; and stirring is conducted in a manner such that the circumferential speed of the stirring rods is 30 m/minute or greater.
    • 目的:提供一种制造聚酰胺的方法,以抑制搅拌器的聚合物或低聚物的附着,减少定期洗涤,提高生产效率,并且几乎不混合未反应材料获得聚酰胺。 构成:用于制备聚酰胺的方法包括直接熔融聚合二胺组分,所述二胺组分包含70摩尔%以上的包含20摩尔%以上的对苯二甲胺的二甲苯二胺和基本上不含溶剂的二羧酸组分 反应装置,其中设置在反应装置中并用于搅拌装置中的熔融聚合物的搅拌装置包括:(i)连接到用于搅拌的驱动构件的旋转轴,(ii)两个或更多个搅拌棒 沿着大致垂直的方向设置,所述大致垂直方向是圆柱形构件或板状构件,其沿着具有在旋转轴的中心的圆的圆周移动,以及(iii)连接旋转轴和搅拌棒的连接构件; 旋转轴的中心线与两个以上的搅拌棒的中心线之间的距离分别为反应装置的内径的15%以上。 连接构件和旋转轴设置在熔融聚合物的液面之上; 以搅拌棒的圆周速度为30m /分钟以上的方式进行搅拌。