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. 01, 1980
Filed:
Feb. 01, 1979
Applicant:
Inventors:
Walter A Butte, Jr, West Chester, PA (US);
Howard P Angstadt, Media, PA (US);
Assignee:
Suntech, Inc., Philadelphia, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B01J / ;
U.S. Cl.
CPC ...
2605 / ; 252420 ; 252413 ;
Abstract
A process for the hydrogenation of aromatic bis-methylamines, such as m- and p-xylylenediamine, to the corresponding cycloaliphatic compound by hydrogenating the bis-methylamine in water as a solvent system, devoid of added ammonia and in the presence of a supported ruthenium catalyst.