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:
Nov. 18, 1997
Filed:
Sep. 12, 1996
Applicant:
Inventors:
Takeyuki Fujita, Tokyo-to, JP;
Kiyonobu Niwa, Tokyo-to, JP;
Kazumoto Ogura, Tokyo-to, JP;
Michio Fukatsu, Tokyo-to, JP;
Assignee:
Nitto Kagaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07L / ;
U.S. Cl.
CPC ...
564479 ;
Abstract
Disclosed is an improvement in a process for catalytic production of methylamines from methanol and NH.sub.3, or methanol, a mixture of methylamines and NH.sub.3, or a mixture of methylamines and NH.sub.3, in a gaseous phase, over a bed of a zeolite catalyst, where the improvement is that the catalyst bed is divided into two or more sub-beds, and the difference between the inlet and outlet temperatures of each catalyst sub-bed is kept in the range of approximately 5.degree. C. to approximately 70.degree. C. while the reaction is carried out.