Spandex of a particular composition and process for making same
    4.
    发明授权
    Spandex of a particular composition and process for making same 有权
    特定组合物的氨纶和其制造方法

    公开(公告)号:US06984708B2

    公开(公告)日:2006-01-10

    申请号:US10264742

    申请日:2002-10-04

    IPC分类号: C08G18/65

    摘要: The invention provides spandex having improved hysteresis and a method for making such spandex. The spandex of the invention comprises the polyurethaneurea reaction product of: (a) poly(tetramethylene ether) glycol (b) 1-isocyanato-4-[(4-isocyanatophenyl)methyl]benzene wherein the mole ratio of diisocyanate to glycol is from about 1.52 to about 2.04; and (c) a mixture of chain extenders comprising: from about 35 to about 55 mole percent ethylene diamine; and from about 45 to about 65 mole percent 1,2-propanediamine.

    摘要翻译: 本发明提供具有改善的滞后的氨纶和制造这种氨纶的方法。 本发明的氨纶包含聚氨酯脲反应产物:(a)聚(四亚甲基醚)二醇(b)1-异氰酸酯基-4 - [(4-异氰酸基苯基)甲基]苯,其中二异氰酸酯与二醇的摩尔比为约 1.52至约2.04; 和(c)增链剂的混合物,其包含:约35至约55摩尔%的乙二胺; 和约45至约65摩尔%的1,2-丙二胺。