公开(公告)号：US3976737A

公开(公告)日：1976-08-24

申请号：US396776

申请日：1973-09-13

申请人： Hideto Sekiguchi ,  Masao Sone ,  Mitsunori Sato

发明人： Hideto Sekiguchi ,  Masao Sone ,  Mitsunori Sato

IPC分类号： D01F6/18

CPC分类号： D01F6/18 ,  D01F6/38

摘要： The present invention relates to a process for producing high shrinking acrylic fibers which have excellent antipilling properties and dyeing characteristics. This process involves dissolving an acrylonitrile polymer in an inorganic solvent to prepare a spinning solution containing the inorganic solvent in a concentration of 40-70%, subjecting the spinning solution to a wet-spinning by extruding through spinnerette orifices into two coagulating baths, while maintaining the linear velocity ratio of free extrusion at 1 or higher and maintaining a jet stretch ratio of 1.5 or higher, stretching the formed swollen gel fibers to 3-7 times the length in hot water or in a heated steam medium at 80.degree.-120.degree.C, drying the stretched fibers, then subjecting the fibers to a secondary stretch of 1.05 to 1.60 times the length, wherein the first coagulating bath has an inorganic solvent concentration of 50-70% of that in the spinning solution. The jet stretch ratio is defined as being the quotient obtained by dividing the take-up speed of the coagulated filaments from the coagulating baths by the extrusion linear velocity of the fiber-forming polymer through the spinnerette orifices.

摘要翻译： 本发明涉及一种制备高收缩丙烯酸纤维的方法，该方法具有优异的防止起绒性能和染色特性。 该方法包括将丙烯腈聚合物溶解在无机溶剂中以制备含有浓度为40-70％的无机溶剂的纺丝溶液，将纺丝溶液通过喷丝头孔挤出进行湿纺，同时保持 自由挤出的线速度为1或更高，并保持喷射拉伸比为1.5或更高，将形成的溶胀凝胶纤维拉伸至热水中或在80°-120℃的加热蒸汽介质中的3-7倍 C，干燥拉伸的纤维，然后对纤维进行长度的1.05〜1.60倍的次级拉伸，其中第一凝固浴的无机溶剂浓度为纺丝溶液的无机溶剂浓度的50-70％。 射流拉伸比定义为通过将纤维形成聚合物通过纺丝板孔的挤出线速度除以凝固浴的凝固丝的卷取速度而得到的商。

公开(公告)号：US3975486A

公开(公告)日：1976-08-17

申请号：US396777

申请日：1973-09-13

申请人： Hideto Sekiguchi ,  Masao Sone ,  Mitsunori Sato

发明人： Hideto Sekiguchi ,  Masao Sone ,  Mitsunori Sato

IPC分类号： D01F6/18

CPC分类号： D01D5/06 ,  D01F6/18 ,  D01F6/38

摘要： The present invention relates to a process for producing an anti-pilling acrylic fiber which has excellent level dyeing properties. This process involves dissolving an acrylonitrile in an inorganic solvent to prepare a spinning solution, wherein the inorganic solvent in the spinning solution is 40-70%, subjecting the spinning solution to wet-spinning by extrusion through spinneret orifices into a coagulation bath containing an inorganic solvent in an amount of 50-70% of that in the spinning solution, while maintaining the linear velocity ratio of free extrusion at 1 or higher and the jet stretch ratio 1.5 or higher, stretching the formed gel fibers 3-7 times the length in hot water or in a heated steam medium at 80.degree.-120.degree.C, drying the stretched fibers and then subjecting the fibers to a relaxation treatment in a hot air current at a temperature of 150.degree.C or lower or in a wet heat atmosphere at a temperature of 120.degree.C or lower. The jet stretch ratio is defined as being the quotient obtained by dividing the takeup speed of the coagulated filaments from the coagulation step by the linear velocity of extrusion of the spinning solution through the spinneret orifices.

摘要翻译： 本发明涉及一种具有优异的染色性能的抗起球丙烯酸纤维的制造方法。 该方法包括将丙烯腈溶解在无机溶剂中以制备纺丝溶液，其中纺丝溶液中的无机溶剂为40-70％，使纺丝溶液通过喷丝孔挤出进行湿纺，形成含有无机溶剂的凝固浴 溶剂的量为纺丝溶液中的50-70％，同时将自由挤出的线速度保持在1或更高，喷射拉伸比为1.5或更高，拉伸所形成的凝胶纤维的长度为3-7倍 热水或在80℃-120℃的加热蒸汽介质中干燥拉伸的纤维，然后在150℃或更低的温度的热风流中或在湿热气氛中对纤维进行松弛处理 温度为120℃以下。 喷射拉伸比定义为通过将凝固丝的卷取速度除以纺丝溶液通过喷丝头孔的线速度而得到的商。