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. 24, 2022
Filed:
Aug. 07, 2018
Nouryon Chemicals International B.v., Arnhem, NL;
Rens Veneman, Amersfoort, NL;
Antoon Jacob Berend Ten Kate, Arhem, NL;
Karl Fredrik Lake, Södertälje, SE;
Eike Nicolas Kantzer, Uddevalla, SE;
Slavisa Jovic, Utrecht, NL;
Rolf Krister Edvinsson, Partille, SE;
Ina Ehlers, Ödsmål, SE;
Hendrik Van Dam, Ede, NL;
Michiel Jozef Thomas Raaijmakers, Deventer, NL;
NOURYON CHEMICALS INTERNATIONAL B.V., Arnhem, NL;
Abstract
A process to convert cyclic alkylene ureas into their corresponding alkylene amines is provided. An exemplary process includes reacting the cyclic alkylene ureas with an amine compound chosen from the group of primary amines or secondary amines that have a higher boiling point than the alkylene amines formed during the process, wherein the process is a reactive separation process and the reaction mixture contains less than about 10 wt % of water on the basis of total weight of the reaction mixture.