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US 11,884,609 B2Granted
Process for manufacturing ethyleneamine compounds
AssigneeNouryon Chemicals International B.V.
InventorsRolf Krister Edvinsson, Antoon Jacob Berend Ten Kate, Michiel Jozef Thomas Raaijmakers, Rens Veneman, Slavisa Jovic, Lawien Feisal Zubeir, Eike Nicolas Kantzer, Ina Ehlers, Hendrik Van Dam, Karl Fredrik Lake
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Abstract
The present disclosure pertains to a process for manufacturing ethyleneamine compounds selected from the group of ethyleneamines and hydroxyethylethyleneamines wherein the process comprises two reaction sequences.
Claims19
Process for manufacturing ethyleneamine compounds selected from the group of ethyleneamines and hydroxyethylethyleneamines, wherein the process comprises a first and a second reaction sequence,
- the first reaction sequence comprising the steps of:
- in an adduction step, providing a CO2 adduct of a starting compound comprising a —NH-CH2-CH2-NH— moiety or a —NH-CH2-CH2-OH moiety, or HO-CH2-CH2-OH,
- in a chain-extension step, reacting a hydroxy-functional compound selected from ethanolamines and dihydroxyethane with an ethyleneamine compound, wherein at least part of a total of hydroxy-functional compounds and the ethyleneamine compound is provided in the form of a CO2 adduct, to form a CO2 adduct of a chain-extended ethyleneamine compound,
- in an elimination step, converting the CO2 adduct of the chain-extended ethyleneamine compound to the corresponding product ethyleneamine compound by removal of the carbonyl group, and
- the second reaction sequence comprising the steps of:
- in a ethylenedichloride reaction step, reacting ethylenedichloride with at least one compound selected from the group of ammonia, an ethyleneamine and/or an ethanolamine to form a hydrochloride salt of the ethyleneamine and/or the ethanolamine,
- in a caustic treatment step, reacting a hydrochloride salt of the ethyleneamine or ethanolamine with a base to form an ethyleneamine compound and an inorganic chloride salt,
- in a salt separation step, separating the inorganic chloride salt from the ethyleneamine compound,
- wherein the first reaction sequence and the second reaction sequence are connected in that at least one of the following takes place:
- effluent from a step in the first reaction sequence is provided as a starting material to a step in the second reaction sequence,
- effluent from a step in the second reaction sequence is provided as a starting material to a step in the first reaction sequence,
- a step of the first reaction sequence and a step of the second reaction sequence are combined, or
- effluent from a step in the first reaction sequence is combined with effluent from a step in the second reaction sequence.
10 more elements
Dependencies are inferred from the claim text.