Patent ID: 11878954
Assignee: NOURYON CHEMICALS INTERNATIONAL B.V.
Field: Organic fine chemistry (Chemistry)
Classification: CPC C  Y | IPC C

Claim 0:
1. Process for manufacturing ethyleneamine compounds selected from the group of ethyleneamines and hydroxyethylethyleneamines, wherein the process comprises two reaction sequences,
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 an amination step, reacting monoethanolamine with ammonia in the presence of hydrogen and an amination catalyst to form a reaction mixture comprising ethylenediamine,
in a separation step, separating the reaction mixture derived from the amination step into at least two fractions,

wherein the first reaction sequence and the second reaction sequence are connected in that at least one of the following takes place:
an effluent from a step in the first reaction sequence is provided as a starting material to a step in the second reaction sequence,
an 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
an effluent from a step in the first reaction sequence is combined with an effluent from a step in the second reaction sequence.