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. 03, 1990
Filed:
Apr. 06, 1988
Tatsuo Kiyuma, Uji, JP;
Isao Naramoto, Tokushima, JP;
New Japan Chemical Co., Ltd., Kyoto, JP;
Abstract
Disclosed is a method for continuous production of a cyclohexylamine compound by liquid phase hydrogenation of an aniline compound selected from aniline, nuclearly lower alkyl-substituted aniline, N-(lower alkyl)aniline and N,N-di(lower alkyl)aniline with hydrogen gas in the presence of a nickel catalyst, which comprises continuously feeding an aniline compound, continuously hydrogenating the aniline compound in the absence of a solvent and in the presence of an ammonia compound at a reaction pressure of about 2 to 10 kg/cm.sup.2 and at about 210.degree. to 240.degree. C., continuously withdrawing a product gas containing product cyclohexylamine compound, unreacted aniline compound, byproducts, hydrogen and ammonia compound from the reaction system, separating the hydrogen and ammonia compound from the product gas, separating the unreacted aniline compound and byproducts from the cyclohexylamine compound and recycling the unreacted aniline compound and byproducts to the reaction system continuously together with starting material feed aniline compound.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile