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:
May. 04, 2021
Filed:
Dec. 12, 2017
Nouryon Chemicals International B.v., Arnhem, NL;
Eike Nicolas Kantzer, Uddevalla, SE;
Karl Fredrik Lake, Södertälje, SE;
Antoon Jacob Berend Ten Kate, Arnhem, NL;
Michiel Jozef Thomas Raaijmakers, Deventer, NL;
Rens Veneman, Deventer, NL;
Ina Ehlers, Stenungsund, SE;
Michael Bertil Einar Sarning, Gothenburg, SE;
Hendrik Van Dam, Ede, NL;
Rolf Krister Edvinsson, Partille, SE;
NOURYON CHEMICALS INTERNATIONAL B.V., Arnhem, NL;
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.