Invention Grant
- Patent Title: Process for manufacturing hydroxyethyl ethylene amines
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Application No.: US16468496Application Date: 2017-12-12
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Publication No.: US10995058B2Publication Date: 2021-05-04
- Inventor: Eike Nicolas Kantzer , Karl Fredrik Lake , Antoon Jacob Berend Ten Kate , Michiel Jozef Thomas Raaijmakers , Rens Veneman , Ina Ehlers , Michael Bertil Einar Sarning , Hendrik Van Dam , Rolf Krister Edvinsson
- Applicant: NOURYON CHEMICALS INTERNATIONAL B.V.
- Applicant Address: NL Arnhem
- Assignee: NOURYON CHEMICALS INTERNATIONAL B.V.
- Current Assignee: NOURYON CHEMICALS INTERNATIONAL B.V.
- Current Assignee Address: NL Arnhem
- Agency: Lorenz & Kopf, LLP
- Priority: EP16204357 20161215
- International Application: PCT/EP2017/082392 WO 20171212
- International Announcement: WO2018/108888 WO 20180621
- Main IPC: C07C213/08
- IPC: C07C213/08

Abstract:
A process for preparing hydroxyethyl ethylene amines and/or ethylene urea derivatives thereof includes reacting monoethylene glycol with an amine-functional compound having at least two —NH— units, of which at least one is selected from the group of 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, wherein one or more —NH—CH2-CH2-NH— units in the amine-functional compound may be present in the form of piperazine moieties or ethylene urea moieties. The molar ratio of amine-functional compound to monoethylene glycol is in the range of 0.2:1 to 1.5:1 and the molar ratio of carbon oxide-delivering agent to —NH—CH2-CH2-NH— units in the amine-functional compound is at least 0.5:1. The process allows the conversion of monoethylene glycol into ethanol amines in the absence of metals-containing catalysts and without using ammonia.
Public/Granted literature
- US20200071260A1 PROCESS FOR MANUFACTURING HYDROXYETHYL ETHYLENE AMINES Public/Granted day:2020-03-05
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