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    Process for the reductive cleavage of linear and cyclic acetals especially formals
    4.
    发明授权
    Process for the reductive cleavage of linear and cyclic acetals especially formals 失效
    线性和环状缩醛特别是甲醛的还原性切割的方法

    公开(公告)号：US06265623B1

    公开(公告)日：2001-07-24

    申请号：US09384058

    申请日：1999-08-26

    申请人： Marcus Morawietz ,  Thomas Haas ,  Olaf Burkhardt ,  Rudolf Vanheertum

    发明人： Marcus Morawietz ,  Thomas Haas ,  Olaf Burkhardt ,  Rudolf Vanheertum

    IPC分类号： C07C29132

    CPC分类号： C07C29/132 ,  C07C29/90 ,  C07C31/245

    摘要： The reductive cleavage of linear and cyclic acetals, especially formals, in an aqueous medium containing a formate takes place by hydrogenation with hydrogen in the presence of a heterogeneous hydrogenation catalyst at a pH value of less than 7 at a temperature of over 200° C. The catalyst-poisoning effect of the formate is overcome at over 200° to 300° C., especially from over 200° to 280° C., so that, in a suspension procedure, the weight ratio of metal having hydrogenating activity to acetal is less than 0.1.

    摘要翻译： 在含有甲酸盐的水性介质中，直链和环状缩醛，尤其是甲醛的还原性裂解是在氢气中，在多于200℃的pH值小于7的非均相加氢催化剂存在下，用氢气进行的。 特别是在200〜300℃，特别是200〜280℃下克服了甲酸酯的催化中毒作用，因此在悬浮法中，具有氢化活性的金属与缩醛的重量比为 小于0.1。

    Process for the production of amines from imines of nitriles
    9.
    发明授权
    Process for the production of amines from imines of nitriles 有权
    从腈亚胺生产胺的方法

    公开(公告)号：US6011179A

    公开(公告)日：2000-01-04

    申请号：US182196

    申请日：1998-10-30

    申请人： Thomas Haas ,  Karl Ludwig Weber ,  Klaus Stadtmuller ,  Willi Hofen ,  Rudolf Vanheertum

    发明人： Thomas Haas ,  Karl Ludwig Weber ,  Klaus Stadtmuller ,  Willi Hofen ,  Rudolf Vanheertum

    IPC分类号： B01J23/75 ,  C07B61/00 ,  C07C209/48 ,  C07C209/52 ,  C07C211/36 ,  C07C209/32

    CPC分类号： C07C209/52 ,  C07C209/48 ,  C07C2101/14

    摘要： A process for the production of primary and/or secondary amines from imines or nitriles, comprising an aminating hydrogenation of imine or of nitrile with hydrogen in the presence of ammonia, of a hydrogenation catalyst based on cobalt, nickel, ruthenium or mixtures of these metals and of a base, at a temperature within the range of 50.degree. C. to 200.degree. C. and at a pressure within the range of 0.3 to 30 MPa. The yield of amine is increased by the use of a quaternary ammonium hydroxide as base. Preferably a tetraalkylammonium hydroxide is used in a quantity of from 0.01 to 100 mMol per mol of amine or of nitrile. The process is suitable in particular for the production of isophoronediamine from isophorone nitrile imine.

    摘要翻译： 一种由亚胺或腈生产伯胺和/或仲胺的方法，包括在氨存在下亚胺或腈与氢的氨化氢化，基于钴，镍，钌的氢化催化剂或这些金属的混合物 在50〜200℃的范围内，压力为0.3〜30MPa的范围内进行。 通过使用季铵氢氧化物作为碱来增加胺的产率。 优选氢氧化四烷基铵的用量为每摩尔胺或腈的0.01至100mMol。 该方法特别适用于从异佛尔酮腈亚胺生产异佛尔酮二胺。