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123 条记录 (耗时 0.041 秒)

    Method for producing an aliphatic dialdehyde monoacetal
    41.
    发明申请
    Method for producing an aliphatic dialdehyde monoacetal 失效
    脂肪族二醛单缩醛的制造方法

    公开(公告)号：US20060058538A1

    公开(公告)日：2006-03-16

    申请号：US10536900

    申请日：2003-11-27

    申请人： Gerd Haderlein ,  Hans-Georg Gobbel ,  Wolfgang Siegel

    发明人： Gerd Haderlein ,  Hans-Georg Gobbel ,  Wolfgang Siegel

    IPC分类号： C07C317/10

    CPC分类号： C07D317/26 ,  B01D1/22 ,  B01D3/141 ,  B01D3/148 ,  B01D3/322 ,  C07C45/60 ,  C07C45/71 ,  C07C45/82 ,  C07C47/198

    摘要： The invention relates to a process for obtaining a pure aliphatic dialdehyde monoacetal by reaction of the corresponding aliphatic dialdehyde or a precursor of the corresponding aliphatic dialdehyde with one or more aliphatic mono- or polyhydric alcohols while distillatively removing water to obtain a reaction mixture which is separated distillatively, which comprises carrying out the distillative separation continuously in a dividing wall column to obtain pure aliphatic dialdehyde monoacetal as a sidestream from the dividing wall column, or in two distillation columns to obtain crude aliphatic dialdehyde monoacetal as a sidestream in the first distillation column, feed the crude aliphatic dialdehyde monoacetal to the second distillation column and obtain pure aliphatic dialdehyde monoacetal as the sidestream from the second distillation column.

    摘要翻译： 本发明涉及通过相应的脂族二醛或相应的脂族二醛的前体与一种或多种脂肪族一元醇或多元醇反应而获得纯的脂族二醛单缩醛的方法，同时蒸馏除去水，得到分离的反应混合物 蒸馏，其包括在分隔壁塔中连续进行蒸馏分离以获得作为来自分隔壁塔的侧流的纯脂族二醛单缩醛，或在两个蒸馏塔中，以在第一蒸馏塔中获得作为侧流的粗脂族二醛单缩醛， 将粗脂族二醛单缩醛进料至第二蒸馏塔，得到作为来自第二蒸馏塔的侧流的纯脂族二醛单缩醛。

    Preparation of N-benzylamines
    44.
    发明授权
    Preparation of N-benzylamines 失效
    N-苄胺的制备

    公开(公告)号：US06476268B1

    公开(公告)日：2002-11-05

    申请号：US10106390

    申请日：2002-03-27

    申请人： Harald Winsel ,  Wolfgang Siegel ,  Michael Bartsch

    发明人： Harald Winsel ,  Wolfgang Siegel ,  Michael Bartsch

    IPC分类号： C07C20900

    CPC分类号： C07C213/02 ,  C07C209/52 ,  C07C249/02 ,  C07C211/27 ,  C07C217/58 ,  C07C251/24

    摘要： N-Benzylamines are prepared by a process in which (i) in a first step, a benzaldehyde is reacted with a primary amine to give the imine and (ii) in a second step, the imine is hydrogenated with hydrogen in the presence of a catalyst containing one or more metals of groups 8 to 10 of the Periodic Table of the Elements to give the N-benzylamine, wherein the iminization (i) is carried out in a water-miscible solvent and the resulting water of reaction is not removed, and the hydrogenation (ii) is carried out in the imine solution obtained in the iminization (i) and containing water of reaction.

    摘要翻译： N-苄胺通过以下方法制备，其中（i）在第一步中，苯甲醛与伯胺反应得到亚胺，和（ii）在第二步中，亚胺在氢气存在下用氢气氢化 含有元素周期表第8至10族的一种或多种金属的催化剂，得到N-苄胺，其中亚胺化（i）在水混溶性溶剂中进行，并且所得到的反应水不被除去， 并且氢化（ⅱ）在亚胺化（ⅰ）中得到的亚胺溶液中进行并含有反应水。