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41 条记录 (耗时 0.031 秒)

    Method for carrying out polycondensation reactions
    1.
    发明授权
    Method for carrying out polycondensation reactions 有权
    进行缩聚反应的方法

    公开(公告)号：US06187898B1

    公开(公告)日：2001-02-13

    申请号：US09367457

    申请日：1999-08-13

    申请人： Paul Wagner ,  Frank Döbert ,  Thomas Menzel ,  Torsten Groth ,  Winfried Joentgen ,  Ulrich Liesenfelder ,  Jörgen Weinschenck ,  Klaus-Peter Heise

    发明人： Paul Wagner ,  Frank Döbert ,  Thomas Menzel ,  Torsten Groth ,  Winfried Joentgen ,  Ulrich Liesenfelder ,  Jörgen Weinschenck ,  Klaus-Peter Heise

    IPC分类号： C08G6904

    CPC分类号： C08G73/0611

    摘要： The invention relates to a method for carrying out polycondensation reactions, according to which the polycondensation of a monomeric starting material is carried out with external supply of heat in a reactor combination which has at least two stages and is composed of a pre-reactor and a high-viscosity reactor, where the low-molecular-weight elimination products produced are removed by evaporation. In the pre-reactor, the reaction product is concentrated to give a high-viscosity preliminary product. The high-viscosity preliminary product is then fed to the high-viscosity reactor, in which it reacts to completion with simultaneous introduction of thermal and mechanical energy and with a residence time of from 20 s to 60 min to give a polycondensation product.

    摘要翻译： 本发明涉及一种进行缩聚反应的方法，根据该方法，单体原料的缩聚是在具有至少两个阶段的反应器组合中进行外部供热，并由预反应器和 通过蒸发除去生成的低分子量消除产物的高粘度反应器。 在预反应器中，将反应产物浓缩，得到高粘度的初步产物。 然后将高粘度的初步产物进料到高粘度反应器中，其中反应完成，同时引入热和机械能，停留时间为20秒至60分钟，得到缩聚产物。

    Process for the preparation of polymers having recurring agents
    3.
    发明授权
    Process for the preparation of polymers having recurring agents 失效
    制备具有复发剂的聚合物的方法

    公开(公告)号：US6054553A

    公开(公告)日：2000-04-25

    申请号：US745812

    申请日：1996-11-12

    申请人： Torsten Groth ,  Winfried Joentgen ,  Frank Dobert ,  Klaus-Peter Heise ,  Thomas Menzel ,  Ursula Pentling ,  Hans-Georg Pirkl ,  Paul Wagner ,  Joergen Weinschenck

    发明人： Torsten Groth ,  Winfried Joentgen ,  Frank Dobert ,  Klaus-Peter Heise ,  Thomas Menzel ,  Ursula Pentling ,  Hans-Georg Pirkl ,  Paul Wagner ,  Joergen Weinschenck

    IPC分类号： C08G73/10 ,  C08G69/26

    CPC分类号： C08G73/1092

    摘要： Polymers having recurring succinyl units are obtained by an improved process by reaction of A, an unsaturated C.sub.4 -dicarboxylic acid or a derivative thereof, with B, a nitrogen-donating compound, in a first reaction step to give a reaction mixture comprising at least one low molecular weight reaction product, and subsequent continuous feeding of the reaction mixture into a continuously operated reactor to give the polymer in a second reaction step. In a further embodiment the invention refers to polymers having recurring succinyl units prepared by reaction of an unsaturated C.sub.4 -dicarboxylic acid or a derivative thereof with a nitrogen-donating compound in a first reaction step and subsequent feeding of the reaction mixture, without intermediate isolation, into an optionally continuously operated reactor, with removal of water, and treatment of the reaction mixture at a temperature of 140 to 350.degree. C.

    摘要翻译： 具有重复琥珀酰基单元的聚合物通过在第一反应步骤中通过使A，不饱和C4-二羧酸或其衍生物与B（一种供氮化合物）的反应而得到的改进方法获得，得到包含至少一种 低分子量反应产物，随后将反应混合物连续进料到连续操作的反应器中，以在第二反应步骤中得到聚合物。 在另一个实施方案中，本发明涉及具有重复的琥珀酰基单元的聚合物，其通过不饱和C4-二羧酸或其衍生物与供氮化合物在第一反应步骤中反应而制备，随后进料反应混合物，无需中间分离， 进入任选连续操作的反应器中，除去水，并在140至350℃的温度下处理反应混合物。