公开(公告)号：US06569987B1

公开(公告)日：2003-05-27

申请号：US09868863

申请日：2001-06-21

申请人： Akihiro Ohba ,  Takashi Yoshitomi ,  Hirozumi Iwasaki ,  Kotaro Takiue

发明人： Akihiro Ohba ,  Takashi Yoshitomi ,  Hirozumi Iwasaki ,  Kotaro Takiue

IPC分类号： C08G6900

CPC分类号： D01F6/605

摘要： To produce meta aramid filaments having a good quality from a polymer solution of a meta aramid produced by a solution polymerization method, with high efficiency, (1) a meta aramid is prepared by polymerization-reacting a aromatic meta-diamine with a aromatic meta-dicarboxylic acid chloride in a polar organic solvent; (2) hydrogen chloride contained in the resultant polymer solution is neutralized with a neutralizing agent containing an alkali metal hydroxide which can react with hydrogen chloride to produce a salt thereof insoluble in the polymerization solvent; (3) the salt deposited from the polymer solution is removed by filtration; (4) the resultant polymer solution is mixed with water and a polar organic amide solvent to prepare a spinning solution; (5) the resultant meta aramid spinning solution is directly extruded in the form of filamentary streams into an aqueous coagulation liquid, to coagulate the extruded filamentary streams of the polymer solution into the form of filaments; (6) the coagulated filaments are immersed in water to remove the salt and the solvent from the filaments; and (7) the water-washed filaments are drawn and heat-treated.

摘要翻译： 为了从溶液聚合法生产的间位芳族聚合物的聚合物溶液中高效地制备具有良好质量的间位芳族聚酰胺长丝，（1）通过使芳族间二胺与芳族间二胺反应， 二羧酸氯化物在极性有机溶剂中; （2）所得聚合物溶液中所含的氯化氢用含碱金属氢氧化物的中和剂中和，该中和剂可与氯化氢反应，生成不溶于聚合溶剂的盐; （3）通过过滤除去由聚合物溶液沉积的盐; （4）将得到的聚合物溶液与水和极性有机酰胺溶剂混合以制备纺丝溶液; （5）将所得到的间位芳族聚酰胺纺丝溶液以丝状流的形式直接挤出成水凝固液体，使挤出的聚合物溶液的丝状流凝结成长丝形式; （6）将凝固的长丝浸入水中以从长丝中除去盐和溶剂; 和（7）水洗长丝被拉伸和热处理。