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. 11, 2017
Filed:
Feb. 19, 2016
Applicant:
Ajinomoto Co., Inc., Tokyo, JP;
Inventors:
Assignee:
AJINOMOTO CO., INC., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 209/86 (2006.01);
U.S. Cl.
CPC ...
C07C 209/86 (2013.01); C07C 209/86 (2013.01); C07C 211/09 (2013.01);
Abstract
A simple and efficient method for producing 1,5-pentanediamine in a free form is provided. The method for producing 1,5-pentanediamine in a free form from a salt of 1,5-pentanediamine includes a step of adsorbing 1,5-pentanediamine in a free form onto a column of an ion exchange resin by applying a solution of salt of 1,5-pentanediamine to the column of the ion exchange resin, and a step of eluting a solution of the 1,5-pentanediamine in a free form from the ion exchange resin by applying an eluent solution to the column of the ion exchange resin onto which the 1,5-pentanediamine in a free form is absorbed.