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    Hollow fiber of cuprammonium regenerated cellulose and process for producing the same
    1.
    发明授权
    Hollow fiber of cuprammonium regenerated cellulose and process for producing the same 失效
    铜中空纤维再生纤维素及其制备方法

    公开(公告)号：US4535028A

    公开(公告)日：1985-08-13

    申请号：US427296

    申请日：1982-09-29

    申请人： Masanobu Yokogi ,  Yoshifumi Sugimoto ,  Yotsuo Ono

    发明人： Masanobu Yokogi ,  Yoshifumi Sugimoto ,  Yotsuo Ono

    IPC分类号： D01F2/04 ,  A61M1/18 ,  B01D39/18 ,  B01D71/06 ,  D01D5/16 ,  D01D5/24 ,  D01F1/08 ,  D02G3/00 ,  B01D39/00

    CPC分类号： B01D69/08 ,  B01D69/02 ,  B01D69/082 ,  B01D69/087 ,  B01D71/12 ,  D01D5/24 ,  Y10T428/2913 ,  Y10T428/2975

    摘要： A hollow fiber of cuprammonium regenerated cellulose having an axially disposed cylindrical bore extending throughout the fiber length, said bore being filled with a gas. The hollow fiber exhibits an improved dialysis performance and ultrafiltration rate over the conventional hollow fiber. Such a hollow fiber can be produced by a process comprising (a) extruding a spinning dope through an annular orifice while simultaneously injecting a gas into the bore as it is formed, and (b) allowing the fiber extrudate to free fall in an air space and dive into a depth of from 2 to 20 mm below the surface of a coagulation bath only with a downward force gained during said free fall.

    摘要翻译： 一种铜铵再生纤维素的中空纤维，其具有贯穿纤维长度延伸的轴向设置的圆柱形孔，所述孔充满气体。 与常规中空纤维相比，中空纤维具有改善的透析性能和超滤速率。 这样的中空纤维可以通过以下方法制造：（a）通过环形孔挤出纺丝原液，同时在形成孔时同时将气体注入孔中，和（b）使纤维挤出物自由落入空气中 并且在所述自由下落期间获得的向下的力量仅在凝固浴的表面下方深度为2至20mm。