US 11,919,866 B2
Process for preparing cyclic alkylene ureas
Antoon Jacob Berend Ten Kate, Arnhem (NL); Karl Fredrik Lake, Södertälje (SE); Michiel Jozef Thomas Raaijmakers, Deventer (NL); Rolf Krister Edvinsson, Partille (SE); Jenny Valborg Therese Adrian Meredith, Årsta (SE); Rens Veneman, Amersfoort (NL); Hendrik Van Dam, Ede (NL); Eike Nicolas Kantzer, Uddevalla (SE); Ina Ehlers, Stenungsund (SE); and Slavisa Jovic, Utrecht (NL)
Assigned to NOURYON CHEMICALS INTERNATIONAL B.V., Arnhem (NL)
Appl. No. 16/638,347
Filed by NOURYON CHEMICALS INTERNATIONAL B.V., Arnhem (NL)
PCT Filed Aug. 7, 2018, PCT No. PCT/EP2018/071325
§ 371(c)(1), (2) Date Feb. 11, 2020,
PCT Pub. No. WO2019/030195, PCT Pub. Date Feb. 14, 2019.
Claims priority of application No. 17186004 (EP), filed on Aug. 11, 2017.
Prior Publication US 2020/0223800 A1, Jul. 16, 2020
Int. Cl. C07D 233/34 (2006.01)
CPC C07D 233/34 (2013.01) 10 Claims
 
1. 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.