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    • 2. 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。
    • 5. 发明授权
    • Process for the continuous production of thermoplastically processable
polyurethanes having improved processing behavior
    • 连续生产具有改进的加工性能的热塑性可加工聚氨酯的方法
    • US5905133A
    • 1999-05-18
    • US880464
    • 1997-06-23
    • Friedemann MullerWolfgang BrauerHerbert HeidingsfeldWolfgang RohrigHans-Georg HoppeJurgen Winkler
    • Friedemann MullerWolfgang BrauerHerbert HeidingsfeldWolfgang RohrigHans-Georg HoppeJurgen Winkler
    • C08G18/00C08G18/08C08G18/10C08G18/65
    • C08G18/0895C08G18/10
    • The present invention relates to a process for the continuous production of thermoplastically processable polyurethanes having improved processing behaviour, wherein in a multistep reactionA) one or more linear hydroxyl-terminated polyols a) having a molecular weight of from 500 to 5000 are mixed continuously with a proportion of an organic diisocyanate b) in an NCO:OH ratio of from 2.0:1 to 5.0:1, in a mixing unit at high shear energy,B) the mixture prepared in step A) is reacted continuously to form an isocyanate-terminated prepolymer in a reactor at temperatures of >120.degree. C., until a conversion of >90%, referred to component a), is achieved,C) the prepolymer prepared in step B) is mixed with the remainder of component b), an NCO:OH ratio of from 2.05:1 to 6:1 being established overall in steps A) to C) and an NCO:OH ratio of 0.9 to 1.1 being established when all the components of steps A) to F) are included,D) the mixture prepared in step C) is cooled to a temperature of
    • 本发明涉及连续生产具有改进的加工性能的热塑性加工性聚氨酯的方法,其中在多步反应中A)一种或多种分子量为500-5000的直链羟基封端的多元醇a)与 一种有机二异氰酸酯b)的比例为2.0:1至5.0:1的NCO:HOH比率,B)在步骤A)中制备的混合物连续反应形成异氰酸酯 - 在约120℃的温度下在反应器中终止预聚物,直至达到> 90%的转化率,称为组分a),C)将步骤B)中制备的预聚物与组分b)的剩余部分混合, 在步骤A)至C)中总体确定为2.05:1至6:1的NCO:HOH比,并且当包括步骤A)至F的所有组分时,建立了0.9至1.1的NCO:OH比率) D)将步骤C)中制备的混合物冷却至<190℃ E)将步骤D)中得到的混合物与一种或多种二醇和任选的分子量为60-500的三醇和/或二胺扩链剂c)连续强烈混合最多5秒, F)步骤E)中获得的混合物在与步骤B)中使用的反应器不同的反应器中连续反应以形成热塑性聚氨酯。