公开(公告)号：US20080242827A1

公开(公告)日：2008-10-02

申请号：US11984019

申请日：2007-11-13

申请人： Xiaofeng Wang ,  Jun Li ,  Ronghua Yuan ,  Haifeng Wang ,  Shunxing Lu ,  Shenghui Chen ,  Jicheng Chang ,  Qingrong Song

发明人： Xiaofeng Wang ,  Jun Li ,  Ronghua Yuan ,  Haifeng Wang ,  Shunxing Lu ,  Shenghui Chen ,  Jicheng Chang ,  Qingrong Song

IPC分类号： C08G75/20

CPC分类号： D01F6/76 ,  D01D1/02 ,  D01F6/605

摘要： The invention relates to a method of preparing omni-meta aromatic polysulfonamide fiber which comprises three steps of preparing spinning dope, wet spinning and post treating. The said step of preparing spinning dope comprises the following steps: (1) dissolving 3,3′-diaminodiphenyl sulphone in a polar organic solvent and cooling it to −20˜20° C.; (2) adding m-phthaloyl chloride of the same mole of the 3,3′-diaminodiphenyl sulphone to carry out a polymerization reaction; (3) then adding an inorganic base of the same mole of 3,3′-diaminodiphenyl sulphone to neutralize the hydrogen chloride produced during the polymerization reaction. The spinning dope thus prepared has a polymer solid content of 10%-20%. The fiber prepared according to the method in the present invention has a greatly improved crimpability, and evidently increased elongation at break comparing with the conventional aromatic polysulfonamide fiber, so that the spinnability of resultant yarn is improved.

摘要翻译： 本发明涉及一种制备全芳香族聚磺酰胺纤维的方法，包括制备纺丝原液，湿纺和后处理三个步骤。 所述制备纺丝原液的步骤包括以下步骤：（1）将3,3'-二氨基二苯砜溶于极性有机溶剂中并冷却至-20〜20℃; （2）加入相同摩尔的3,3'-二氨基二苯基砜的邻苯二甲酰氯进行聚合反应; （3）然后加入相同摩尔的3,3'-二氨基二苯基砜的无机碱，以中和聚合反应过程中产生的氯化氢。 如此制备的纺丝原液的聚合物固体含量为10％-20％。 根据本发明的方法制备的纤维与常规的芳族聚磺酰胺纤维相比，卷曲性大大提高，断裂伸长率明显提高，从而纱线的纺丝性提高。