PROCESS FOR MANUFACTURING ETHYLENE AMINES

A process for preparing polyethyleneamines of formula NH2-(CH2-CH2-NH-)pH wherein p is at least 3 and wherein one or more -NH-CH2-CH2-NH- units may be piperazine units and/or ethylene urea derivatives of these compounds, includes reacting monoethylene glycol with an amine-functional compound having...

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Hauptverfasser: EDVINSSON, Rolf Krister, LAKE, Karl Fredrik, TEN KATE, Antoon Jacob Berend, VENEMAN, Rens, ADRIAN MEREDITH, Jenny Valborg Therese, SARNING, Michael Bertil Einar, EHLERS, Ina, RAAIJMAKERS, Michiel Jozef Thomas, KANTZER, Eike Nicolas, VAN DAM, Hendrik
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:A process for preparing polyethyleneamines of formula NH2-(CH2-CH2-NH-)pH wherein p is at least 3 and wherein one or more -NH-CH2-CH2-NH- units may be piperazine units and/or ethylene urea derivatives of these compounds, includes reacting monoethylene glycol with an amine-functional compound having at least two -NH- units, of which at least one is selected from primary amine groups and cyclic secondary amine groups, in the presence of a carbon oxide-delivering agent. The amine-functional compound includes at least one -NH-CH2-CH2-NH- unit, and one or more -NH-CH2-CH2-NH- units may be in the form of cyclic ethylene urea moieties, piperazine moieties, or linear ethylene urea moieties. The molar ratio of amine-functional compound to monoethylene glycol is above 1.2:1 and the molar ratio of carbon oxide delivering agent to -NH-CH2-CH2-NH- units is at least 0.5:1. The process makes it possible to obtain ethylene amines and derivatives thereof without using ammonia or metal-containing catalysts.