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:
Jan. 29, 2008
Filed:
Sep. 25, 2006
Daniel Schramm, Sulzbach, DE;
Daniel Decker, Liederbach a. Ts., DE;
Klaus Forstinger, Babenhausen, DE;
Klemens Flick, Heilbronn, DE;
Daniel Schramm, Sulzbach, DE;
Daniel Decker, Liederbach a. Ts., DE;
Klaus Forstinger, Babenhausen, DE;
Klemens Flick, Heilbronn, DE;
Clariant Speciality Fine Chemicals (Deutschland) GmbH, Frankfurt am Main, DE;
Abstract
A process for preparing amines of the general formula (I)RRCHNRR  (I)in which R, R, Rand Rare each independently hydrogen, straight-chain or branched, halogenated or halogen-free C-C-alkyl, C-C-cycloalkyl, C-C-aryl or C-C-aralkyl, by catalytic, hydrogenating amination of carbonyl compounds of the general formula (II)R—C(═O)—R  (II)with nitrogen compounds of the general formula (III)HNRR  (III)in the presence of bifunctional catalyst systems comprising a.) a hydrogenation-active catalyst component comprising one or more metals of transition group 8 of the Periodic Table and b.) one or more solid, acidic cocatalysts, wherein the hydrogenating amination is carried out in the presence of aqueous ammonia or aqueous amine of the formula (III) and at least one organic solvent miscible with ammonia or the aqueous amine of the formula (III).