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    Media for water treatment
    13.
    发明授权
    Media for water treatment 失效
    水处理媒体

    公开(公告)号：US06743372B1

    公开(公告)日：2004-06-01

    申请号：US09762800

    申请日：2001-02-13

    申请人： Roland Kleinstück ,  Torsten Groth ,  Winfried Joentgen

    发明人： Roland Kleinstück ,  Torsten Groth ,  Winfried Joentgen

    IPC分类号： C02F510

    CPC分类号： C02F5/10 ,  C02F1/50 ,  C02F1/56

    摘要： The present invention relates to compositions for water treatment based on biodegradable polymers containing repeating succinyl units, biocidal oxidizing agents and unsubstituted or substituted amidosulphonic acid, their use in, and the process for, conditioning water of cooling circuits.

    摘要翻译： 本发明涉及基于含有重复琥珀酰基单元，杀生物杀灭氧化剂和未取代或取代的酰氨基磺酸的生物可降解聚合物的水处理组合物，它们在冷却回路水中的用途和调节方法。

    Process for the preparation of polymers having recurring agents
    16.
    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。

    Process for the preparation of N-substituted cyclic imides
    18.
    发明授权
    Process for the preparation of N-substituted cyclic imides 失效
    制备N-取代的环状酰亚胺的方法

    公开(公告)号：US5773630A

    公开(公告)日：1998-06-30

    申请号：US595982

    申请日：1996-02-06

    申请人： Torsten Groth ,  Karl-Erwin Piejko ,  Winfried Joentgen ,  Josef Kasbauer ,  Bernd Alig ,  Werner Struver

    发明人： Torsten Groth ,  Karl-Erwin Piejko ,  Winfried Joentgen ,  Josef Kasbauer ,  Bernd Alig ,  Werner Struver

    IPC分类号： C07D207/40 ,  C07D207/416 ,  C07D207/44 ,  C07D207/444 ,  C07D207/452 ,  C07D209/48 ,  C07D207/36

    CPC分类号： C07D207/452 ,  C07D207/40

    摘要： N-Substituted cyclic imides are obtained by reacting a cyclic acid anhydride with an amine in the presence of a solvent and an acid catalyst at 80.degree. to 200.degree. C. and with removal of the water formed, it being particularly advantageous to carry out this reaction in the presence of a stabilizer and an inert, dipolar aprotic cosolvent, optionally to add an inert organic solvent of low or zero polarity to the reaction mixture present after the reaction, to add a non-aqueous base in an amount of 0.5 to 50% by weight, based on the cyclic anhydride of the formula (II) used, and to separate off the precipitate formed to give a filtrate containing the N-substituted cyclic imide.

    摘要翻译： N-取代的环状酰亚胺通过使环酸酐与胺在溶剂和酸催化剂的存在下在80℃至200℃下反应并除去形成的水而获得，特别有利的是进行该 在稳定剂和惰性非质子助溶剂的存在下反应，任选地向反应后存在的反应混合物中加入低或零极性的惰性有机溶剂，加入0.5至50的非水性碱 基于所使用的式（II）的环状酸酐，并分离形成的沉淀物，得到含有N-取代的环状酰亚胺的滤液。