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    Method for the production of aldehydes
    2.
    发明授权
    Method for the production of aldehydes 失效
    醛的生产方法

    公开(公告)号：US06310261B1

    公开(公告)日：2001-10-30

    申请号：US09582780

    申请日：2000-07-03

    申请人： Bernhard Geissler ,  Michael Röper ,  Edgar Zeller ,  Rocco Paciello ,  Jürgen Decker ,  Hartwig Voss ,  Norbert Mahr

    发明人： Bernhard Geissler ,  Michael Röper ,  Edgar Zeller ,  Rocco Paciello ,  Jürgen Decker ,  Hartwig Voss ,  Norbert Mahr

    IPC分类号： C07C4550

    CPC分类号： C08G73/0206 ,  B01J31/1658 ,  B01J31/1805 ,  B01J2231/321 ,  B01J2531/80 ,  B01J2531/822 ,  C07C45/50 ,  Y02P20/584 ,  C07C47/02

    摘要： The invention relates to a method for the production of aldehydes or aldehydes and alcohols by hydroformylation of olefins in the presence of a complexing catalyst homogeneously dissolved in a reaction mixture, containing a metal of Group VIIIa of the periodic table of the elements and a phosphorus-free, polydentate nitrogen compound suitable for complex formation as ligand at temperatures ranging from 50 to 100° C. and pressures from 20 to 1,000 bar and recirculating the catalyst complex in the hydroformylation reaction, wherein a) derivatized polyamines are used that are substantially non-water soluble and suitable for complex formation and have a mean molecular weight of more than 1,000 Dalton and at least 10 nitrogen atoms; b) the catalyst complex remaining in the bottom of the distillation column and the excess ligands obtained from the reaction mixture are recirculated totally or partially in the hydroformylation once the hydroformylation reaction and the separation or partial separation by distillation of the aldehydes and the alcohols has been completed; c) continues or at least batchwise evacuation of at least part of the high boiler from the bottom of the distillation of the reaction mixture is then carried out.

    摘要翻译： 本发明涉及通过在均匀溶解在含有元素周期表第Ⅷa族金属的反应混合物的络合催化剂存在下烯烃的加氢甲酰化生产醛或醛和醇的方法， 在50至100℃的温度和20至1,000巴的压力下适合于络合物形成配位体的多余的多齿氮化合物，并且在加氢甲酰基化反应中再循环催化剂配合物，其中a）使用基本上不相容的衍生的多胺， 水溶性且适合于络合物形成，并且具有大于1,000道尔顿和至少10个氮原子的平均分子量; b）一旦加氢甲酰化反应和通过蒸馏醛和醇的分离或部分分离已经被残留在蒸馏塔底部的催化剂络合物和从反应混合物中得到的过量配体在加氢甲酰化反应中被全部或部分再循环 完成 c）然后执行从反应混合物的蒸馏底部继续或至少间歇抽出高锅炉的至少一部分。

    Preparation of benzaldehyde dialkyl acetals
    9.
    发明授权
    Preparation of benzaldehyde dialkyl acetals 失效
    制备苯甲醛二烷基缩醛

    公开(公告)号：US5507922A

    公开(公告)日：1996-04-16

    申请号：US289277

    申请日：1994-08-11

    申请人： Dieter Hermeling ,  Heinz Hannebaum ,  Hartwig Voss ,  Andreas Weiper-Idelmann

    发明人： Dieter Hermeling ,  Heinz Hannebaum ,  Hartwig Voss ,  Andreas Weiper-Idelmann

    IPC分类号： C07C41/50 ,  C07C43/307 ,  C25B3/02

    CPC分类号： C25B3/02

    摘要： Benzaldehyde dialkyl acetals of the general formula I ##STR1## where R.sup.1 is C.sub.1 -C.sub.6 -alkyl, R.sup.2 is C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -alkoxy, halogen, cyano or carboxyalkyl where the alkyl group is of 1 to 6 carbon atoms, n is an integer of from 1 to 3 and the radicals R.sup.2 may be identical or different when n is >1, are prepared by electrochemical oxidation of a substituted toluene compound of the general formula II ##STR2## by a process in which a substituted toluene compound II is oxidized in the presence of an alkanol R.sup.1 --OH and of an auxiliary electrolyte in an electrolysis cell, the reaction solution thus obtained is let down outside the electrolysis cell to a pressure which is from 10 mbar to 10 bar lower than the pressure in the electrolysis cell andA) in the batchwise procedure, the gas released from the reaction solution on letting down the latter is separated off and the reaction solution is recycled at least once to the electrolysis cell, subjected to electrolysis, let down, separated from the released gas and then worked up to obtain the product, orB) in the continuous procedure, some of the reaction solution is worked up to obtain the product and the remaining part of the reaction solution is mixed with an amount of the originally used reaction solution which corresponds to the part removed and is recycled to the electrolysis cell, subjected to electrolysis and let down.

    摘要翻译： 其中R 1是C 1 -C 6烷基，R 2是C 1 -C 6烷基，C 1 -C 6烷氧基，卤素，氰基或羧基烷基的苯甲醛二烷基缩醛，其中烷基是1至6碳 原子，n为1〜3的整数，并且当n> 1时，基团R2可以相同或不同，是通过以下方法制备的，通过以下方法制备通式II II的取代的甲苯化合物：其中 取代的甲苯化合物II在电解槽中在烷醇R1-OH和辅助电解质的存在下被氧化，将由此获得的反应溶液在电解槽内排出至10mbar至10bar以下的压力 比电解池中的压力和A）在分批程序中，将从反应溶液中释放的气体释放出来，将反应溶液再循环至少一次至电解槽，进行电解，放电 与...分开 释放气体，然后处理以获得产物，或B）在连续步骤中，处理一些反应溶液以获得产物，并将剩余部分的反应溶液与一定量的最初使用的反应溶液 其对应于去除的部分并且被再循环到电解槽中，进行电解和放电。

    Removal of salts by electrodialysis
    10.
    发明授权
    Removal of salts by electrodialysis 失效
    通过电渗析去除盐

    公开(公告)号：US5282939A

    公开(公告)日：1994-02-01

    申请号：US783868

    申请日：1991-10-29

    申请人： Hartwig Voss

    发明人： Hartwig Voss

    IPC分类号： B01D61/44 ,  C09B67/54

    CPC分类号： B01D61/44 ,  C09B67/0096

    摘要： Salts of polybasic low molecular weight acids are removed from aqueous solutions containing anionic organic compounds by electrodialysis by acidifying the aqueous solution before or during salt removal.

    摘要翻译： 通过在脱盐之前或期间酸化水溶液通过电渗析从含有阴离子有机化合物的水溶液中除去多元低分子量酸的盐。