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1.发明授权
公开(公告)号：US4421708A
公开(公告)日：1983-12-20
申请号：US345845
申请日：1982-02-04
CPC分类号： D01F6/18
摘要： High-strength filaments of dry-spun polyacrylonitrile are obtained by a process in which tension-reduced spun filaments are continuously stretched hydrothermally in one or more stages: where it involves several stages, stretching is carried out at a temperature of the stretching medium gradually increasing from stage to stage up to .theta.=.theta..sub.n and, in the final (n-th) stage, to a degree of at least 50% of the maximum degree of stretching; where it is carried out in a single stage, stretching is carried out at the optimal stretching temperature .theta..sub.n, after which the material is further treated in the conventional way, optionally with fixing of the stretched material to a pre-determined extent.
摘要翻译： 干纺聚丙烯腈的高强度长丝通过以下方法获得：将拉伸纺丝丝在一个或多个阶段中水热连续拉伸的方法获得：其中包括几个阶段，拉伸在拉伸介质的温度下逐渐增加 从阶段到阶段到θ=θn，并且在最后（第n）阶段中，达到最大拉伸程度的至少50％的程度; 在单一阶段进行，在最佳拉伸温度θn下进行拉伸，然后以常规方式进一步处理材料，任选地将拉伸的材料固定到预定的程度。
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公开(公告)号：US4177111A
公开(公告)日：1979-12-04
申请号：US809494
申请日：1977-06-23
IPC分类号： D01F13/04 , B01D3/00 , C07C99/12 , C07C103/36
CPC分类号： D01F13/04 , Y02P70/629 , Y10S203/09
摘要： The recovery of dimethylacylamides from solutions which are formed during the production of fibres is particularly economical if the solution is concentrated in a separating column to produce a sump product having a DMA content of 30 to 90% at pressures of more than 300 Torr, using the evaporation heat of the head product for heating the column, with the aid of a compressor and then separating the sump product which is concentrated in DMA by distillation.
摘要翻译： 在纤维生产过程中形成的溶液中二甲基酰胺的回收是特别经济的，如果将溶液浓缩在分离塔中，以产生在大于300托的压力下DMA含量为30至90％的贮槽产品，则使用 借助于压缩机，然后通过蒸馏分离浓缩在DMA中的贮槽产物，用于加热柱的头部产品的蒸发热。
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公开(公告)号：US4124674A
公开(公告)日：1978-11-07
申请号：US723581
申请日：1976-09-15
申请人： Christian Pieper , Hans Uhlemann , Karlheinz Feltgen , Klaus Nickel , Alfred Nogaj , Gunter Lorenz
发明人： Christian Pieper , Hans Uhlemann , Karlheinz Feltgen , Klaus Nickel , Alfred Nogaj , Gunter Lorenz
摘要： The invention relates to a process for continuously removing residual solvent from filaments of dry-spun acrylonitrile polymers to values of below 2% by weight of solvent by a multi-stage hot-wash with low quantities of water.
摘要翻译： 本发明涉及通过用少量水的多级热洗将连续地从干纺丙烯腈聚合物的长丝中除去残留溶剂至低于2重量％的溶剂的方法。
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公开(公告)号：US4124673A
公开(公告)日：1978-11-07
申请号：US768852
申请日：1977-02-15
CPC分类号： D01F8/08
摘要： The invention relates to a process for the production of bifilar fibres and filaments consisting of only one acrylonitrile polymer. The polymer is dissolved in a usual solvent and the resulting solution is divided up into two solution streams. After these solution streams have been brought to different temperatures they are spun by a conventional bifilar spinning technique.
摘要翻译： 本发明涉及生产由仅一种丙烯腈聚合物组成的双歧杆纤维和长丝的方法。 将聚合物溶解在通常的溶剂中，将得到的溶液分成两股溶液流。 在这些溶液流已经达到不同的温度之后，它们通过常规的双相纺丝技术纺出。
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公开(公告)号：US4854021A
公开(公告)日：1989-08-08
申请号：US93735
申请日：1987-09-08
申请人： Ulrich Reinehr , Christian Pieper , Rolf-Burkhard Hirsch , Hermann-Josef Jungverdorben , Jakob Breuer
发明人： Ulrich Reinehr , Christian Pieper , Rolf-Burkhard Hirsch , Hermann-Josef Jungverdorben , Jakob Breuer
IPC分类号： D02G1/12
CPC分类号： D02G1/12
摘要： In an improved crimping process, use is made of a stufferbox where(a) lid and/or floor are arranged movably and(b) in the working position, the distance between lid and floor at the inlet opening is smaller than the distance between lid and floor at the outlet opening.
摘要翻译： 在改进的压接过程中，使用填塞箱，其中（a）盖和/或地板被可移动地布置，并且（b）在工作位置，入口处的盖和地板之间的距离小于盖 和出口处的地板。
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6.发明授权
公开(公告)号：US4804511A
公开(公告)日：1989-02-14
申请号：US129325
申请日：1987-12-02
CPC分类号： D01D5/092
摘要： Extraordinarily low ranges of error, with respect to yarn adhesion and uniformity, in dry spinning yarns are achieved when the spinning gas in the upper part of the shaft blasts the yarns radially from the inside to the outside in an apparatus designed for this purpose, the velocity of the radial flow of gas, dirctly below the spinning nozzle, transverse to the running direction of the yarns and within a spacing of 10 mm from the nozzle, increasing from 0 to at least from 0.2 to 1 m/s.
摘要翻译： 当轴的上部的纺丝气体在为此目的设计的设备中从内向外径向辐射纱线时，实现了在干纺纱中相对于纱线粘附和均匀性的非常低的误差范围， 垂直于纺纱喷嘴下方的气体的径向流动速度横向于纱线的运行方向，并且距离喷嘴10mm的距离从0增加到至少0.2至1m / s。
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公开(公告)号：US4163078A
公开(公告)日：1979-07-31
申请号：US804229
申请日：1977-06-07
CPC分类号： D01F8/08 , Y10S428/913 , Y10T428/2929
摘要： The invention relates to a bi-component filament or fibre of a fibre-forming synthetic polymer having a core/sheath structure in at least one component and having a moisture absorption of at least 1.5% at 65% relative atmospheric humidity and at a temperature of 21.degree. C. and a moisture absorption of at least 5% at 90% relative atmospheric humidity and 21.degree. C. and a water-retention-power of at least 10% as well as to a process for the production thereof.
摘要翻译： 本发明涉及一种成纤合成聚合物的双组分长丝或纤维，其在至少一种组分中具有芯/鞘结构，并且在65％相对大气湿度和在65％相对大气湿度的温度下具有至少1.5％的吸湿性 21℃，在90％相对大气湿度和21℃下的吸湿率至少为5％，保水力至少为10％，以及其制备方法。
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