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:
Oct. 30, 1990
Filed:
Feb. 14, 1990
Haruhito Sato, Sodegaura, JP;
Masanori Tsuzuki, Sodegaura, JP;
Idemitsu Kosan Company Limited, Tokyo, JP;
Abstract
The present invention relates to a process for preparing triethylenediamines which comprises contacting an amine compound having, in the molecule, a group represented by the general formula: ##STR1## (wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently a hydrogen atom or an alkyl group having 1 to 4 carbon atoms and X is nitrogen or oxygen) with a catalyst comprising crystalline metallosilicate having a silica (SiO.sub.2)/metal oxide (M.sub.2 O.sub.3) molar ratio of 12/1 or more under a pressure of not less than 4 kg/cm.sup.2 (absolute pressure). According to the present invention, the conversion of the amine compound can be greatly increased and thus the desired triethylenediamines can be produced in a high yield.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile