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:
Sep. 09, 2014
Filed:
Sep. 06, 2011
Changsheng Chen, Yantai Shandong, CN;
Yuan LI, Yantai Shandong, CN;
Wenjuan Zhao, Yantai Shandong, CN;
Hongyin Cui, Yantai Shandong, CN;
Weiqi Hua, Yantai Shandong, CN;
Changsheng Chen, Yantai Shandong, CN;
Yuan Li, Yantai Shandong, CN;
Wenjuan Zhao, Yantai Shandong, CN;
Hongyin Cui, Yantai Shandong, CN;
Weiqi Hua, Yantai Shandong, CN;
Wanhua Chemical Group Co., Ltd., Yantai, Shandong, CN;
Wanhua Chemical (Ningbo) Co., Ltd., Ningbo, Zhejiang, CN;
Abstract
Provided is a 3-aminomethyl-3,5,5-trimethylcyclohexylamine preparation method. A feeding flow of 3-cyano-3,5,5-trimethylcyclohexylamine is reacted with NH3 and hydrogen in the presence of a hydrogenation catalyst; the method is characterized by: firstly adding a basic compound to the feeding flow of 3-cyano-3,5,5-trimethylcyclohexylamine, and then after a portion of 3-cyano-3,5,5-trimethylcyclohexylamine has reacted, adding an acidic compound to reaction materials for further hydrogenation reaction to prepare the product. The method ensures that the aminonitrile content in the product is low, thus effectively reducing the duration of the reaction and greatly reducing the consumption of the catalyst during the hydrogenation reaction process.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile