US 11,919,866 B2 · Process for preparing cyclic alkylene ureas

Process for preparing cyclic alkylene ureas

AssigneeNouryon Chemicals International B.V.

InventorsAntoon Jacob Berend Ten Kate, Karl Fredrik Lake, Michiel Jozef Thomas Raaijmakers, Rolf Krister Edvinsson, Jenny Valborg Therese Adrian Meredith, Rens Veneman, Hendrik Van Dam, Eike Nicolas Kantzer, Ina Ehlers, Slavisa Jovic

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Abstract

A process for producing a cyclic alkylene urea product of Formula I: in which a compound of Formula II and/or Formula III is contacted in a reaction zone with a compound of Formula IV and/or Formula V and in the presence of one or more carbonyl delivering compounds; wherein the compound of Formula II and/or the compound of Formula III are added to a reaction zone comprising compound of Formula IV and/or compound of Formula (V) continuously or semi-continuously over a period of time, or in two or more batches.

Claims10

Dependent claims

A process for producing 1-(2-aminoethyl) imidazolidin-2-one (UDETA), the process comprising:

contacting 2-oxazolidinone (CMEA) and/or monoethanolamine (MEA) in a reaction zone with ethyleneurea (EU) and/or ethylenediamine (EDA) and in the presence of one or more carbonyl delivering compounds;
wherein the ethyleneurea (EU) and/or the ethylenediamine (EDA) is present in a reaction zone, and wherein the 2-oxazolidinone (CMEA) and/or the monoethanolamine (MEA) are added to the reaction zone semi-continuously or in two or more batches.

Dependencies are inferred from the claim text.