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:
Nov. 26, 2013
Filed:
Nov. 06, 2009
Kirsten Dahmen, Freinsheim, DE;
Martin Ernst, Heidelberg, DE;
Michael Limbach, Worms, DE;
Johann-peter Melder, Böhl-Iggelheim, DE;
Beatrice Rössler-feigel, Weisenheim am Sand, DE;
Joaquim Henrique Teles, Otterstadt, DE;
Kirsten Dahmen, Freinsheim, DE;
Martin Ernst, Heidelberg, DE;
Michael Limbach, Worms, DE;
Johann-Peter Melder, Böhl-Iggelheim, DE;
Beatrice Rössler-Feigel, Weisenheim am Sand, DE;
Joaquim Henrique Teles, Otterstadt, DE;
BASF SE, Ludwigshafen, DE;
Abstract
The present invention relates to a process for preparing a cyclic diamine, comprising the reaction of at least one cyclic alkene with a gas mixture (G) comprising dinitrogen the subsequent conversion of monoxide to give at least one cyclic ketone and then converting the at least one cyclic ketone to a cyclic diamine. The invention also relates to the use of a cyclic diamine with primary and secondary amine functions thus obtained to prepare polyamides and polyurethanes.