Invention Grant
- Patent Title: Multi-step process for converting cyclic alkyleneureas into their corresponding alkyleneamines
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Application No.: US16638389Application Date: 2018-08-07
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Publication No.: US11236039B2Publication Date: 2022-02-01
- Inventor: Antoon Jacob Berend Ten Kate , Michiel Jozef Thomas Raaijmakers , Karl Fredrik Lake , Eike Nicolas Kantzer , Slavisa Jovic , Rolf Krister Edvinsson , Ina Ehlers , Hendrik Van Dam , Rens Veneman
- 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: EP17185945 20170811
- International Application: PCT/EP2018/071319 WO 20180807
- International Announcement: WO2019/030190 WO 20190214
- Main IPC: C07C209/62
- IPC: C07C209/62 ; B01D3/00 ; C07C209/86 ; C07C213/00

Abstract:
The invention pertains to a process for converting a feedstock comprising cyclic alkyleneureas into their corresponding alkyleneamines, comprising —a CO2 removal step in which cyclic alkyleneureas are converted into their corresponding alkyleneamines by reacting cyclic alkyleneureas in the liquid phase with water with removal of CO2, —an amine removal step wherein cyclic alkyleneureas are converted in a reactive separation process into their corresponding alkyleneamines by reaction with an amine compound selected from the group of primary amines or secondary amines which have a higher boiling point than the alkyleneamines formed during the process. It has been found that the combination of a CO2 removal step and an amine removal step makes it possible to convert alkyleneureas into the corresponding amines in an efficient manner in a high reaction rate.
Public/Granted literature
- US20200165187A1 MULTI-STEP PROCESS FOR CONVERTING CYCLIC ALKYLENEUREAS INTO THEIR CORRESPONDING ALKYLENEAMINES Public/Granted day:2020-05-28
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