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    Tow-Step Method for Producing Polyesterols
    7.
    发明申请
    Tow-Step Method for Producing Polyesterols 审中-公开
    生产聚酯的牵引方法

    公开(公告)号：US20080193990A1

    公开(公告)日：2008-08-14

    申请号：US11909108

    申请日：2006-03-21

    申请人： Christoph Schnorpfeil ,  Mirko Kreitschmann ,  Jean-Francois Stumbe ,  Gitta Egbers

    发明人： Christoph Schnorpfeil ,  Mirko Kreitschmann ,  Jean-Francois Stumbe ,  Gitta Egbers

    IPC分类号： C12P7/42 ,  C08G63/12

    CPC分类号： C08G63/87 ,  C08G18/42

    摘要： The present invention relates to a two-stage process for preparing polyesterols, which comprises the following process steps: a) preparation of at least one base polyesterol by reaction of in each case at least one dicarboxylic acid with in each case at least one polyhydroxyl compound, b) reaction of the base polyesterol from a) or a mixture of the base polyesterols from a) with at least one enzyme and, if appropriate, additionally with polyhydroxyl compounds. The invention further relates to a polyesterol obtainable by the above process.

    摘要翻译： 本发明涉及制备聚酯醇的两阶段方法，其包括以下工艺步骤：a）通过在每种情况下使至少一种二羧酸与每种情况下至少一种多羟基化合物反应来制备至少一种碱性聚酯醇 b）将碱性聚酯醇与a）或碱性聚酯醇与a）的混合物与至少一种酶（如果适用的话）另外与多羟基化合物反应。 本发明还涉及通过上述方法获得的聚酯醇。

    Method for producing polyesterols having a reduced reactivity
    8.
    发明申请
    Method for producing polyesterols having a reduced reactivity 审中-公开
    制备具有降低的反应性的聚酯的方法

    公开(公告)号：US20060205914A1

    公开(公告)日：2006-09-14

    申请号：US10548482

    申请日：2004-02-24

    申请人： Mirko Kreitschmann ,  Udo Rotermund ,  Peter Fritsch

    发明人： Mirko Kreitschmann ,  Udo Rotermund ,  Peter Fritsch

    IPC分类号： C08G18/42 ,  C07C69/34

    CPC分类号： C08G18/4238 ,  C08G63/16 ,  C08G63/85 ,  C08G63/88

    摘要： Polyesterols having reduced reactivity are prepared by catalytic polycondensation of dicarboxylic acids/dicarboxylic acid derivatives and H-functional substances using tin catalysts by a process wherein the polyesterols are brought into contact with oxygen after the end of the esterification reaction. The polyesterols themselves obtained by this process are used for the preparation of PU.

    摘要翻译： 具有降低的反应性的聚酯通过使用锡催化剂的二羧酸/二羧酸衍生物和H官能物质的催化缩聚来制备，其中酯化反应结束后，聚酯与氧接触。 通过该方法获得的聚酯醇本身用于制备PU。

    METHOD FOR SAFELY PREVENTING BACKFLOWING IN THE CONVEYING OF A FLUID
    10.
    发明申请
    METHOD FOR SAFELY PREVENTING BACKFLOWING IN THE CONVEYING OF A FLUID 有权
    用于在流体输送中更好地防止回流的方法

    公开(公告)号：US20110180151A1

    公开(公告)日：2011-07-28

    申请号：US13001467

    申请日：2009-06-16

    申请人： Franz Borgel ,  Alfred Krause ,  Mirko Kreitschmann ,  Anton Meier ,  Frank-Friedrich Pape ,  Wolfgang Reif ,  Michael Salla

    发明人： Franz Borgel ,  Alfred Krause ,  Mirko Kreitschmann ,  Anton Meier ,  Frank-Friedrich Pape ,  Wolfgang Reif ,  Michael Salla

    IPC分类号： F15D1/00

    CPC分类号： F17D1/14 ,  F16K15/00 ,  Y10T137/0396

    摘要： A method for reliably avoiding backflow in the transport of a liquid under pressure via a transport pipe (1), in which a shut-off device (2) with differential pressure switching is arranged, into a container (3) which is under pressure and which comprises the liquid to be transported and/or another liquid is proposed, wherein a pressure accumulator (4) which is filled with the liquid to be transported up to a certain level and above the liquid level, in direct contact with the liquid to be transported, with an inert gas is arranged in the transport pipe (1) upstream from the shut-off device (2) in the transport direction, the inert gas being provided in the pressure accumulator (4) under an excess pressure and in an amount relative to the container (3) to be filled which are designed so that, in the case of a drop in the pressure in the transport pipe (1), the inert gas ensures a positive pressure difference in the transport pipe (1) to the container (3) over a period which is at least as long as the reaction time of the shut-off device (2) and the shut-off device (2) has an emptying pipe (6) with emptying valve (7).

    摘要翻译： 一种用于可靠地避免在压力下输送液体的回流的方法，该输送管（1）具有压差切换的切断装置（2），其中所述输送管（1）设置在处于压力下的容器（3）中， 其包括待运输的液体和/或另一种液体，其中填充有待运输的液体达到一定水平并高于液面的压力蓄积器（4）与液体直接接触 在输送方向上从切断装置（2）的上游配置有惰性气体输送的惰性气体，惰性气体在过压压力下设置在蓄压器（4）中， 相对于被填充的容器（3），其被设计成使得在输送管（1）中的压力下降的情况下，惰性气体确保输送管（1）中的正压差 容器（3）至少在一段时间内 只要关闭装置（2）和切断装置（2）的反应时间具有排空阀（7）的排空管（6）。