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, 2017
Filed:
Jan. 28, 2013
Cathay R&d Center Co., Ltd., New District, Shanghai, CN;
Cathay Industrial Biotech Ltd., Grand Cayman, KY;
Xiucai Liu, Shanghai, CN;
Charlie Liu, Shanghai, CN;
Duanfang Dai, Shanghai, CN;
Bingbing Qin, Shanghai, CN;
Naiqiang Li, Shanghai, CN;
CATHAY R&D CENTER CO., LTD., Shanghai, CN;
CATHAY INDUSTRIAL BIOTECH LTD., Shanghai, CN;
Abstract
One aspect of the invention relates to a method for reducing salt content in an aqueous cadaverine salt composition comprising adjusting the pH of the aqueous cadaverine salt composition to provide a first composition comprising an aqueous cadaverine composition and a solid composition, wherein the pH of the aqueous cadaverine composition is at least about 12; and removing the solid composition from the first composition to provide the aqueous cadaverine composition. Another aspect of the invention relates to a method for the purification of cadaverine from an aqueous cadaverine salt composition using the salt-reducing method described herein; and obtaining cadaverine from the aqueous cadaverine composition.