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AssigneeBASF SE
InventorsRobert Baumann, Markus Christian Biel, Gordon Brasche, Axel Franzke, Thomas Heidenfelder, Paul Klingelhoefer, Alfred Oftring, Marie Katrin Schroter
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The present invention relates to a process for preparing aminocarboxylates, proceeding from amines, by employing a reaction sequence composed of ethoxylation to amino alcohols and subsequent oxidative dehydrogenation to the corresponding aminocarboxylates, especially the alkali metal or alkaline earth metal salts of the complexing agents MGDA (methylglycinediacetic acid), EDTA (ethylenediaminetetra-acetic acid) and GLDA (glutamic acid diacetic acid) or the free acids thereof.
A process for preparing aminocarboxylates, in which, in a first stage, an amine is ethoxylated at a reaction temperature in the range from 30 to 100° C. to give an alkanolamine, and the alkanolamine thus formed is dehydrogenated in a second stage oxidatively to give an aminocarboxylate.
Dependencies are inferred from the claim text.