The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 05, 2022
Filed:
May. 18, 2018
Nouryon Chemicals International B.v., Arnhem, NL;
Karl Fredrik Lake, Södertälje, SE;
Eike Nicolas Kantzer, Uddevalla, SE;
Rolf Krister Edvinsson, Partille, SE;
Ina Ehlers, Stenungsund, SE;
Hendrik Van Dam, Ede, NL;
Jenny Valborg Therese Adrian Meredith, Sweden, SE;
Lars Torbjörn Hagberg, Stockholm, SE;
Antoon Jacob Berend Ten Kate, Arnhem, NL;
Rens Veneman, Amersfoot, NL;
Michiel Jozef Thomas Raaijmakers, Deventer, NL;
Slavisa Jovic, Utrecht, NL;
NOURYON CHEMICALS INTERNATIONAL B.V., Arnhem, NL;
Abstract
Methods are provided for manufacturing a cyclic urea adduct of an ethyleneamine compound, the ethyleneamine compound being selected from the group of ethyleneamines and hydroxyethylethyleneamines and comprising at least one —NH—CH2-CH2-NH— moiety and at least two ethylene moieties, wherein the ethyleneamine compound is reacted with CO2 in the presence of an auxiliary compound selected from ethylenediamine (EDA), monoethanolamine (MEA) and mixtures thereof, the molar ratio of auxiliary compound to amine compound being at least 0.02:1. It has been found that the presence of an auxiliary compound selected from ethylenediamine (EDA), monoethanolamine (MEA) and mixtures thereof leads to a substantial increase of the reaction rate as compared to a process wherein the auxiliary compound is not present.