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    • 1. 发明授权
    • Production process for producing polyurethane elastic material and elastic yarn
    • 生产聚氨酯弹性材料和弹性纱线的生产工艺
    • US06252031B1
    • 2001-06-26
    • US09402361
    • 1999-09-30
    • Nobuhisa TsutsumiKenji TamuraMitsuhiko Yoshimoto
    • Nobuhisa TsutsumiKenji TamuraMitsuhiko Yoshimoto
    • C08G1810
    • D01F6/70C08G18/0895C08G18/10C08G18/12C08G18/6607C08G18/6674Y10S528/906C08G18/40
    • A process for producing a polyurethane elastic material or polyurethane elastic yarn from a first polymer diol having a molecular weight of 600 or more, a second polymer diol having a molecular weight of 600 or more, a first low molecular weight diol having a molecular weight of 500 or less, a second low molecular weight diol, a first diisocyanate and a second diisocyanate as main starting materials, the total amount of the first diisocyanate and the second diisocyanate in the starting materials being 0.95 to 1.25 times the total molar amount of the first polymer diol, the second polymer diol, the first low molecular weight diol and the second low molecular weight diol, comprising the step of: extruding continuously extruding from a nozzle a polyurethane polymer in fluid state obtained by continuously reacting a prepolymer having hydroxyl-terminal obtained by reacting the first polymer diol, the first low molecular weight diol and the first diisocyanate, with a prepolymer having isocyanate-terminal obtained by reacting the second polymer diol, the second low molecular weight diol and the second diisocyanate.
    • 从分子量为600以上的第一聚合物二醇和分子量为600以上的第二聚合物二醇制成聚氨酯弹性体或聚氨酯弹性丝的方法,分子量为600以上的第一低分子量二醇 500以下,第二低分子量二醇,第一二异氰酸酯和第二二异氰酸酯作为主要原料,起始原料中第一二异氰酸酯和第二二异氰酸酯的总量为第一二异氰酸酯和第二二异氰酸酯的总摩尔量的0.95至1.25倍 聚合物二醇,第二聚合物二醇,第一低分子量二醇和第二低分子量二醇,包括以下步骤:从流体状态连续挤出聚氨酯聚合物,所述聚氨酯聚合物通过连续反应获得的具有羟基末端的预聚物获得 通过使第一聚合物二醇,第一低分子量二醇和第一二异氰酸酯与具有异氰酸酯的预聚物反应 通过使第二聚合物二醇,第二低分子量二醇和第二二异氰酸酯反应获得的N-末端。