METHOD FOR PRODUCING AMINOPOLYCARBOXYLATES

METHOD FOR PRODUCING AMINOPOLYCARBOXYLATES

The invention relates to a method for producing aminopolycarboxylates starting from the corresponding polyalkanol amines by means of oxidative dehydration in the presence of a catalyst containing 1 to 90 wt.% copper, with respect to the total weight of the catalyst, using a base. The method is chara...

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Bibliographische Detailangaben
Hauptverfasser: BIEL, MARKUS CHRISTIAN, FRANZKE, AXEL, SCHROTER, MARIE KATRIN, BAUMANN, ROBERT, TEICH, FRIEDHELM, KLINGELHOEFER, PAUL, OFTRING, ALFRED
Format: Patent
Sprache:eng ; fre
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:The invention relates to a method for producing aminopolycarboxylates starting from the corresponding polyalkanol amines by means of oxidative dehydration in the presence of a catalyst containing 1 to 90 wt.% copper, with respect to the total weight of the catalyst, using a base. The method is characterized in that the polyalkanol amine is first partially reacted into a reaction mixture containing the aminopolycarboxylate at a temperature ranging from 140 to 180 °C until at least 10 to 90 mol% of the polyalkanol amine is reacted. The reaction is then continued at an increased temperature.