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. 17, 1995
Filed:
Oct. 06, 1993
Applicant:
Inventors:
Tadamitsu Kiyoura, Kanagawa, JP;
Kazuhiro Terada, Kanagawa, JP;
Assignee:
Mitsui Toatsu Chemicals, Incorporated, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
564479 ; 502 64 ;
Abstract
A method for selectively preparing dimethylamine and monomethylamine, while the production of trimethylamine is inhibited to a sufficiently low level. The method comprises carrying out a gaseous reaction of methanol and ammonia by the use of a mordenite modified with a silylating agent by a silylation treatment in a liquid phase. According to the present invention, recycling trimethylamine is unnecessary, and the amount of steam or the like to be used can be decreased.