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    Process for the production of hydrophilic acrylic fibers
    57.
    发明授权
    Process for the production of hydrophilic acrylic fibers 失效
    生产亲水丙烯酸纤维的方法

    公开(公告)号：US5028369A

    公开(公告)日：1991-07-02

    申请号：US409698

    申请日：1989-09-20

    申请人： Ulrich Reinehr ,  Gunter Turck ,  Egon Kunzel ,  Dieter Paulini ,  Dieter Heinkes

    发明人： Ulrich Reinehr ,  Gunter Turck ,  Egon Kunzel ,  Dieter Paulini ,  Dieter Heinkes

    IPC分类号： D01F6/54 ,  D01D5/04 ,  D01F8/08 ,  D01G1/04

    CPC分类号： D01F8/08

    摘要： A process for the discontinuous or (preferably) continuous production of dry spun hydrophilic acrylic fibers and threads with a core/sheath structure which have improved color fastness properties, more uniform cross-sections and better processing characteristics. By employing a new after-treatment combination of more intensive counterflow washing, stretching in steam, fixing in steam and careful drying of the fibers as staple fibers, improved hydrophilic fibers with a water retention capacity above 30% can be obtained from spinning solutions which have a much lower non-solvent content than is necessary in the present-state of the art for obtaining a high water retention capacity of the order indicated above.

    摘要翻译： 用于不连续或（优选）连续生产具有改善的色牢度特性，更均匀的横截面和更好的加工特性的具有芯/鞘结构的干纺亲水丙烯酸纤维和线的方法。 通过采用更强烈的逆流洗涤，蒸汽拉伸，蒸汽固定和纤维仔细干燥作为短纤维的新的后处理组合的新的后处理组合，可以从具有30％以上的纺丝溶液获得具有30％以上的改善的亲水性纤维， 比现有技术中所需的低得多的非溶剂含量，以获得上述顺序的高保水能力。

    Continuous dry-spinning process for acrylonitrile filaments and fibres
    59.
    发明授权
    Continuous dry-spinning process for acrylonitrile filaments and fibres 失效
    丙烯腈长丝和纤维的连续干纺工艺

    公开(公告)号：US4457884A

    公开(公告)日：1984-07-03

    申请号：US505544

    申请日：1983-06-17

    申请人： Ulrich Reinehr ,  Hans Uhlemann

    发明人： Ulrich Reinehr ,  Hans Uhlemann

    IPC分类号： D01D5/04 ,  D01F6/18 ,  D01F6/38 ,  D01D5/22

    CPC分类号： D01F6/18 ,  D01D5/04

    摘要： Ready-for-despatch filaments and fibres made of acrylonitrile polymers which contain at least 40% by weight of acrylonitrile units can be prepared from a spinning solution in a continuous dry-spinning method in which(a) the spinning solution spun has a viscosity at 100.degree. C. of 10 to 60 falling-ball seconds,(b) the evaporation of the solvent in the spinning cell is controlled in such a way that on leaving the spinning cell the solvent content of the filaments is at most 40% by weight, relative to the solids content of the fibre,(c) before the stretch the filaments are treated with a spin-finish which contains a lubricant and an antistat and gives the filaments a moisture content of at most 10% by weight, relative to the solids content of the fibre, and(d) before the stretch the filaments have no contact with any other extraction liquid for the spinning solvent.

    摘要翻译： 可以由纺丝溶液以连续干纺丝方法制备包含至少40重量％丙烯腈单元的由丙烯腈聚合物制成的预先发送长丝和纤维，其中（a）纺丝纺丝溶液的粘度为 100℃，10〜60滴球秒，（b）纺丝槽中溶剂蒸发的控制方式为使离丝纺丝细胞的溶剂含量至多为40重量％ 相对于纤维的固体含量，（c）在拉伸之前，丝线用含有润滑剂和抗静电剂的旋涂处理，并且使细丝相对于纤维的含水量为至多10重量％ 纤维的固体含量，（d）在拉伸之前，丝与纺丝溶剂的任何其它提取液没有接触。