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:
Mar. 08, 2022
Filed:
Jul. 03, 2018
Nouryon Chemicals International B.v., Arnhem, NL;
Michiel Jozef Thomas Raaijmakers, Deventer, NL;
Antoon Jacob Berend Ten Kate, Arnhem, NL;
Rens Veneman, Deventer, NL;
Karl Fredrik Lake, Södertälje, SE;
Slavisa Jovic, Utrecht, NL;
Eike Nicolas Kantzer, Uddevalla, SE;
Ina Ehlers, Ödsmål, SE;
Rolf Krister Edvinsson, Partille, SE;
Björn Patrik Skansen, Mölndal, SE;
Michael Bertil Einar Sarning, Gothenburg, SE;
Jenny Valborg Therese Adrian Meredith, Årsta, SE;
Hendrik Van Dam, Frölunda, SE;
NOURYON CHEMICALS INTERNATIONAL B.V., Arnhem, NL;
Abstract
A process is provided for preparing ethyleneamines of the formula NH—(CH—NH—)H wherein p is at least 3, or derivatives thereof wherein one or more units —NH—CH—NH— may be present as a cyclic ethylene urea unit or piperazine unit or between two units —NH—CH—NH— a carbonyl moiety is present. The process includes reacting an ethanolamine-functional compound OH—(CH—NH—)H wherein q is at least 2, an amine-functional compound NH—(CH—NH—)H wherein r is at least 1, in the presence of a carbon oxide delivering agent, wherein the molar ratio of ethanolamine-functional compound to amine-functional compound is from about 0.05:1 to about 0.7:1 and the molar ratio of carbon oxide delivering agent to amine-functional compound is higher than the molar ratio of ethanolamine-functional compound to amine-functional compound, provided that the process does not comprise reacting 3 moles of ethylenediamine (EDA) and 1 mole of AEEA (aminoethylethanolamine) in the presence of 1.65 moles of urea at 280 deg C. for 2 hours.