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    • 1. 发明申请
    • PREPARATION METHOD OF ELASTIC YARN HAVING EXCELLENT POWER AND ELONGATION
    • 具有优良伸长和弹性的弹性纱的制备方法
    • WO2011081441A3
    • 2011-12-01
    • PCT/KR2010009493
    • 2010-12-29
    • HYOSUNG CORPLEE JAE MYUNGKIM TAE HEONKANG YEON SOO
    • LEE JAE MYUNGKIM TAE HEONKANG YEON SOO
    • D01F6/70
    • D01F6/70C08G18/00C08G18/10C08G18/32
    • The present invention relates to a preparation method of a polyurethaneurea elastic yarn, wherein the elastic yarn having high power is prepared by preparing a prepolymer by using 1) a glycol having a number average molecular weight of 500-1,200 dalton and 2) a diisocyanate mixture comprising 1-15 mol% of 2,4'-diphenylmethane diisocyanate on the basis of the total weight of diisocyanate; adding 3) a chain extender to the prepolymer to obtain a polyurethaneurea polymer; and stirring the polyurethaneurea polymer to mature the obtained polyurethaneurea spinning undiluted solution and spinning the undiluted solution. The polyurethaneurea elastic yarn prepared by the method has high power and excellent elongation, and the thermal deterioration of knitted and woven products using the elastic yarn due to a post-process carried out after knitting or weaving can be reduced.
    • 本发明涉及一种聚氨酯脲弹性纱的制备方法,其中通过使用1)数均分子量为500-1,200道尔顿的二醇和2)二异氰酸酯混合物制备预聚物来制备具有高倍率的弹性纱 基于二异氰酸酯的总重量包含1-15摩尔%的2,4'-二苯基甲烷二异氰酸酯; 向预聚物中加入3)扩链剂以获得聚氨酯脲聚合物; 并搅拌聚氨酯脲聚合物使得到的聚氨酯脲纺丝原液成熟并旋转原液。 用该方法制备的聚氨酯脲弹性纱具有高的伸长率和优异的伸长率,并且可以减少由于在编织或编织后进行的后处理而使用弹性纱的针织和编织制品的热劣化。