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    PROCESS FOR THE PREPARATION OF POLYOLEFIN FIBERS
    22.
    发明公开
    PROCESS FOR THE PREPARATION OF POLYOLEFIN FIBERS 审中-公开
    制备聚烯烃纤维的方法

    公开(公告)号：EP3307928A1

    公开(公告)日：2018-04-18

    申请号：EP16730341.1

    申请日：2016-06-14

    申请人： Total Research & Technology Feluy

    发明人： LHOST, Olivier ,  NAVEZ, Pascal

    IPC分类号： D01D1/02 ,  D01D5/18 ,  D01F6/04

    CPC分类号： D01D1/02 ,  D01D5/18 ,  D01F6/04 ,  D01F6/30 ,  D04H1/4291 ,  D04H1/724 ,  D10B2321/0211 ,  D10B2321/022

    摘要： The present invention relates to a process for the preparation of polyolefin fibers having mean fiber diameters of less than 5000 nm, comprising the steps of: a) preparing a polyolefin solution in a solvent, b) placing said polyolefin solution in a fiber producing device comprising a body configured to receive said polyolefin solution, said body comprising one or more openings, and c) rotating the fiber producing device, wherein rotation of the fiber producing device causes the polyolefin solution to be passed through said one or more openings to produce polyolefin fibers having mean fiber diameters of less than 5000 nm, wherein said polyolefin is selected from the group comprising polyethylene polymers and copolymers having a weight average molecular weight Mw of at least 40 000 daltons, and polypropylene polymers and copolymers, having a weight average molecular weight Mw of at least 120 000 daltons; wherein said fiber producing device is rotated at a speed of at least 10 000 revolutions per minutes (RPM). The invention also relates to said polyolefin fibers, and to articles comprising said fibers.