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    Polyurethane compositions with a low content of diisocyanate monomer(s)
    3.
    发明申请
    Polyurethane compositions with a low content of diisocyanate monomer(s) 审中-公开
    具有低二异氰酸酯单体含量的聚氨酯组合物

    公开(公告)号：US20060270820A1

    公开(公告)日：2006-11-30

    申请号：US11501966

    申请日：2006-08-10

    申请人： Theodor Hippold ,  Dieter Guse ,  Christian Terfloth

    发明人： Theodor Hippold ,  Dieter Guse ,  Christian Terfloth

    IPC分类号： C08G18/00

    CPC分类号： C08G18/4202 ,  C08F283/006 ,  C08G18/12 ,  C08G2170/20 ,  C08G18/307

    摘要： At least one isocyanate-reactive monomer is reacted with an excess of molten monomeric diisocynate to produce at least one reaction product and a maximum of 0.5 wt % of free isocyanate groups. The reaction product is then mixed with at least 20 wt. %, based on the total weight of reaction product, of at least one isocyanate-terminated prepolymer which is essentially free of diisocyanate monomers and has a viscosity at 20° C. of at least 1.500 mPa·s, the isocyanate-terminated prepolymer having a content of free NCO groups of up to 25 wt % and containing a maximum of 0.1 wt. % of diisocyanate monomer(s) based on the weight of the isocyanate-terminated prepolymer. A polyurethane composition containing less than 0.1 wt. % of monomeric diisocyanate, based on the total weight of the resulting polyurethane composition, is produced.

    摘要翻译： 使至少一种异氰酸酯反应性单体与过量的熔融单体二异氰酸酯反应以产生至少一种反应产物和最多0.5重量％的游离异氰酸酯基团。 然后将反应产物与至少20wt。 基于反应产物的总重量，至少一种基本上不含二异氰酸酯单体的异氰酸酯封端的预聚物，并且在20℃下的粘度为至少1.500mPa.s，异氰酸酯封端的预聚物具有 游离NCO基团含量高达25重量％，最多含0.1重量％。 ％的二异氰酸酯单体，基于异氰酸酯封端的预聚物的重量。 含有小于0.1wt。 产生基于所得聚氨酯组合物总重量的单体二异氰酸酯的％。