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:
Jun. 28, 2016
Filed:
Oct. 22, 2013
Applicant:
Cj Cheiljedang Corp., Seoul, KR;
Inventors:
Won Sik Gwak, Gimpo-si, KR;
Yong Bum Seo, Gimpo-si, KR;
Chong Ho Lee, Seoul, KR;
In Sung Lee, Seoul, KR;
Hideki Murata, Seoul, KR;
Assignee:
CJ CHEILJEDANG CORP., , KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 209/84 (2006.01); C07C 211/09 (2006.01); C08G 69/26 (2006.01); C12P 13/00 (2006.01);
U.S. Cl.
CPC ...
C07C 209/84 (2013.01); C07C 211/09 (2013.01); C08G 69/26 (2013.01); C12P 13/001 (2013.01);
Abstract
A purification method of 1,4-diaminobutane, 1,4-diaminobutane purified using the purification method, and a polyamide prepared using the purified 1,4-diaminobutane are provided. The purification method of 1,4-diaminobutane includes: concentrating a fermentation solution including at least one of 1,4-diaminobutane and a salt thereof to obtain a concentrate; adding a base to the concentrate of the fermentation solution to prepare an basic composition having a pH 12 or higher; and recovering 1,4-diaminobutane from the basic composition.