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    Process for preparing aminopolycarboxylates proceeding from amino acids
    9.
    发明授权
    Process for preparing aminopolycarboxylates proceeding from amino acids 失效
    由氨基酸制备氨基多羧酸盐的方法

    公开(公告)号：US08785685B2

    公开(公告)日：2014-07-22

    申请号：US13430105

    申请日：2012-03-26

    申请人： Robert Baumann ,  Markus Christian Biel ,  Axel Franzke ,  Thomas Heidenfelder ,  Paul Klingelhoefer ,  Alfred Oftring

    发明人： Robert Baumann ,  Markus Christian Biel ,  Axel Franzke ,  Thomas Heidenfelder ,  Paul Klingelhoefer ,  Alfred Oftring

    IPC分类号： C07C227/18 ,  C07C227/02

    CPC分类号： C07C227/18 ,  C07C227/02 ,  C07C227/12 ,  C07C229/16 ,  C07C229/12

    摘要： The present invention relates to a process for preparing aminopolycarboxylates proceeding from an amino acid which, in a first process step is reacted with ethylene oxide to give an intermediate mixture comprising the corresponding dialkanolamine, and then the intermediate mixture, in a second process step is converted catalytically using a base to the corresponding aminopolycarboxylate, wherein the amino acid, before the reaction with ethylene oxide in the first process step, is supplied to a partial neutralization with 0.70 to 0.99 equivalent of base per acid group, or, in the first process step, an amino acid which has already been partly neutralized with 0.70 to 0.99 equivalent of base per acid group is used.

    摘要翻译： 本发明涉及从氨基酸制备氨基多羧酸盐的方法，该方法在第一工艺步骤与环氧乙烷反应得到包含相应的二链烷醇胺的中间体混合物，然后在第二工艺步骤中将中间体混合物转化 催化地将碱用于相应的氨基多羧酸盐，其中在与第一工艺步骤中的环氧乙烷反应之前，将氨基酸以0.70-0.99当量的碱/酸组供应至部分中和，或者在第一工艺步骤 使用已经用0.70〜0.99当量碱的每个酸基部分中和的氨基酸。