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:
Aug. 28, 1990
Filed:
Jun. 23, 1988
Applicant:
Inventors:
Assignee:
Hoechst AG Werk Ruhrchemie, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
564471 ; 564472 ; 564473 ; 564474 ;
Abstract
A process for the preparation of methylamines by the reaction of amines, formaldehyde and hydrogen as starting materials on a fixed-bed catalyst in the liquid phase under pressure and preferably at elevated temperature. The starting materials contain a reduced percentage of water. They are heated to a predetermined temperature apart from each other, and then mixed with each other in the presence of the fixed-bed catalyst.