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. 19, 2013
Filed:
Jul. 13, 2009
Martin Ernst, Heidelberg, DE;
Alfred Oftring, Bad Duerkheim, DE;
Kathrin Wissel-stoll, Ludwigshafen, DE;
Oemer Uensal, Mainz, DE;
Stephan Freyer, Neustadt, DE;
Ansgar Gereon Altenhoff, Heidelberg, DE;
Wolfgang Staffel, Waldsee, DE;
Martin Ernst, Heidelberg, DE;
Alfred Oftring, Bad Duerkheim, DE;
Kathrin Wissel-Stoll, Ludwigshafen, DE;
Oemer Uensal, Mainz, DE;
Stephan Freyer, Neustadt, DE;
Ansgar Gereon Altenhoff, Heidelberg, DE;
Wolfgang Staffel, Waldsee, DE;
BASF SE, , DE;
Abstract
The present invention relates to 5-isopropyl-3-aminomethyl-2-methyl-1-aminocyclohexane (carvonediamine) and to a process for preparation thereof by a) reacting carvone with hydrogen cyanide, b) then reacting the carvonenitrile obtained in stage a) with ammonia in the presence of an imine formation catalyst and c) then reacting the carvonenitrile imine-containing reaction mixture obtained in stage b) with hydrogen and ammonia over hydrogenation catalysts. The present invention further relates to the use of carvonediamine as a hardener for epoxy resins, as an intermediate in the preparation of diisocyanates, as a starter in the preparation of polyetherols and/or as a monomer for polyamide preparation.