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:
Apr. 21, 1998
Filed:
Mar. 10, 1997
Applicant:
Inventors:
Gerhard Darsow, Krefeld, DE;
Gerd-Michael Petruck, Erkrath, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
564450 ; 564451 ;
Abstract
For the continuous preparation of a mixture of amino-methyl-cyclohexanes and diamino-methyl-cyclohexanes by catalytic hydrogenation of diamino-toluenes with hydrogen at temperatures of from 150.degree. to 260.degree. C. and an H.sub.2 pressure of from 20 to 500 bar, use is made of a fixed-bed catalyst comprising ruthenium on an Al.sub.2 O.sub.3 support treated with compounds of rare earth metals, of manganese and alkali metal hydroxides or alkaline earth metal hydroxides.
Quick Actions:
Darsow, Gerhard. (1998). Process for preparing a mixture of amino-methyl-cyclohexanes and (U.S. Patent No. 5741929). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5741929
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile