Patent · US Active

5-isopropyl-3-aminomethyl-2-methyl-1-amino-cyclohexane (carvone diamine), and method for the production thereof

US8586794B2 · kind B2 · utility

0Cited by

5References

19Claims

0Family size

Assignee

BASF SE

Inventors

Martin Ernst · Ludwigshafen am Rhein, DE
Alfred Oftring · Bad Dürkheim, DE
Kathrin Wissel-Stoll · Ludwigshafen, DE
Oemer Uensal · Mainz, DE
Stephan Freyer · Neustadt, DE
Ansgar Gereon Altenhoff · Heidelberg, DE
Wolfgang Staffel · Otterstadt, DE

Key dates

Filing date	Jul 13, 2009
Grant date	Nov 19, 2013
Priority date	—
Expiry date	Dec 17, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C211/36
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.