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    • 3. 发明授权
    • Process for preparing TPU molding compositions
    • 制备TPU模塑组合物的方法
    • US5981655A
    • 1999-11-09
    • US006064
    • 1998-01-12
    • Herbert HeidingsfeldWilli MeisterBernhard SchulteWolfgang BrauerFriedemann MullerHans-Georg HoppeHans-Georg WussowJurgen Winkler
    • Herbert HeidingsfeldWilli MeisterBernhard SchulteWolfgang BrauerFriedemann MullerHans-Georg HoppeHans-Georg WussowJurgen Winkler
    • C08L55/02C08G18/00C08G18/08C08G18/65C08L55/00C08L75/00C08L75/04C08L101/00
    • C08L75/04C08G18/0895
    • A process for the continuous production of a thermoplastic molding composition containing a mixture of a TPU and a thermoplastic (co)polymer is disclosed. The process comprises(i) introducing into an extruder via a first feed point component I) with at least 3% by weight, with respect to component I), of at least one member selected from the group consisting of components A), B) and C), and(ii) metering in the balance of said A), B) and C) into said extruder via one or more subsequent feed points,(iii) extruding components I) and II) under conditions sufficient to cause A), B) and C) reaction to form TPU, and(iv) upon the completion of said reaction, removing the resulting mixture of TPU and (co)polymer from the extruder,wherein component I) comprises 1 to 60% by weight, with respect to the total mixture, of a thermoplastic (co)polymer, and wherein component II) comprises 99 to 40% by weight, with respect to the total mixture, of the polyurethane-forming components including A) an organic diisocyanate, B) a linear polyol having terminal hydroxyl groups and a number average molecular weight of 500 to 5000, and C) a chain extender having a molecular weight of 60 to 500, and wherein the molar ratio of NCO groups in A) to the groups which react with NCO in B) and C) is in the range of 0.9 to 1.2.
    • 公开了一种用于连续生产含有TPU和热塑性(共)聚合物的混合物的热塑性模塑组合物的方法。 该方法包括(i)通过第一进料点组分I)向至少一种选自组分A),B)中的至少一种成分引入至少3重量%的挤出机,相对于组分I) 和(ii)在所述A),B)和C)的余量中通过一个或多个后续进料点将所述A),B)和C)的余量计量加入到所述挤出机中,(iii)在足以导致A)和 ,B)和C)反应形成TPU,和(iv)在完成所述反应后,从挤出机中除去所得TPU和(共)聚合物的混合物,其中组分I)包含1至60重量% 相对于总混合物,热塑性(共)聚合物,并且其中组分II)包含相对于总混合物的99至40重量%的形成聚氨酯的组分,包括A)有机二异氰酸酯,B) 具有末端羟基,数均分子量为500〜5000的直链状多元醇,C)扩链剂 分子量为60至500,并且其中A)中的NCO基团与在B)和C)中与NCO反应的基团的摩尔比在0.9至1.2的范围内。