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    GLOSSY PILLING-RESISTANT ACRYLIC FIBER, METHOD FOR PRODUCING SAME, AND SPUN YARN AND KNITTED FABRIC INCLUDING SAID ACRYLIC FIBER
    1.
    发明公开
    GLOSSY PILLING-RESISTANT ACRYLIC FIBER, METHOD FOR PRODUCING SAME, AND SPUN YARN AND KNITTED FABRIC INCLUDING SAID ACRYLIC FIBER 审中-公开
    GLÄNZENDEABRIEBFESTE ACRYLFASER，VERFAHREN ZUR HERSTELLUNG DAVON SOWIE SPINNGARN UND MASCHENWARE MIT BESAGTER ACRYLFASER

    公开(公告)号：EP3187629A4

    公开(公告)日：2017-09-13

    申请号：EP15837071

    申请日：2015-08-25

    申请人： MITSUBISHI CHEM CORP

    发明人： NAKANISHI SHIMA ,  DAN HIDETO ,  NAKAHASHI SHINGO ,  ONOHARA YUKIO ,  INAGAKI TATSUHIKO

    IPC分类号： D01F6/18

    CPC分类号： D01F6/18 ,  D04B21/00 ,  D10B2321/10 ,  D10B2401/20

    摘要： The present invention provides: an acrylic fiber having a fineness of 0.5 to 3.5 dtex and having excellent gloss, pilling resistance, and texture; a method for producing said acrylic fiber; and a spun yarn and a knitted fabric containing said acrylic fiber. Provided is an acrylic fiber having a filament fineness of 0.5 to 3.5 dtex, wherein the product K of the value of knot strength (cN/dtex) and the value of knot elongation (%) is from 8 to 30 inclusive, and the number of recesses having a depth of 0.1 µm or greater is 10 or fewer. In this method for producing said acrylic fiber, an acrylonitrile-based copolymer containing 92 to 96.8 mass% of an acrylonitrile unit, 2 to 6 mass% of a vinyl-based monomer unit, and 0.2 to 2.0 mass% of a sulfonic acid group-containing vinyl monomer unit is dissolved in an organic solvent, to prepare a spinning dope. A coagulated fiber bundle is formed by discharging the spinning dope from discharge holes into a coagulation bath having a solvent concentration of 40 to 60 mass% and a temperature of 35 to 50 °C. The coagulated fiber bundle is drawn in hot water at a draw ratio of 2 to 3.8 times, an oil agent is applied, the fiber bundle is dried, and then the fiber bundle is drawn under dry heat at a draw ratio of 1.2 to 3 times. The product S of said draw ratio in hot water and said draw ratio under dry heat is from 4 to 6 times. Further, the fiber bundle is subjected to a thermal relaxation treatment.

    摘要翻译： 本发明提供：纤度为0.5〜3.5分特，且具有优异的光泽，耐起球性和质感的丙烯酸类纤维， 一种生产所述丙烯酸纤维的方法; 以及包含所述丙烯酸纤维的细纱和针织物。 本发明提供细度为0.5〜3.5分特的丙烯酸系纤维，其中，结节强度（cN / dtex）和结节伸长率（％）的值为8以上且30以下， 深度为0.1μm以上的凹部为10个以下。 在该制造上述丙烯酸系纤维的方法中，使用丙烯腈系单体92〜96.8质量％，乙烯系单体单元2〜6质量％，磺酸基单体0.2〜2.0质量％ 将含乙烯基单体单元溶解在有机溶剂中，制备纺丝原液。 将纺丝原液从排出孔排出到溶剂浓度为40〜60质量％，温度为35〜50℃的凝固浴中，形成凝固纤维束。 将凝固的纤维束以2〜3.8倍的拉伸倍率在热水中拉伸，涂布油剂，将纤维束干燥后，以1.2〜3倍的拉伸倍率在干热下拉伸纤维束 。 所述热水拉伸比S和所述干热拉伸比S乘以4至6倍。 此外，纤维束经受热松弛处理。