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:
Aug. 25, 2015
Filed:
Sep. 28, 2012
Applicant:
Toyobo Co., Ltd., Osaka-shi, Osaka, JP;
Inventors:
Assignee:
TOYOBO CO., LTD., Osaka-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07C 209/86 (2006.01); C07C 211/02 (2006.01);
U.S. Cl.
CPC ...
C07C 209/86 (2013.01); C07C 211/02 (2013.01);
Abstract
A method for producing a polyamine composition with high production efficiency that has a low salt concentration includes (1) a step of treating a plant and/or a processed plant product with ethanol; (2) a step of treating the plant and/or the processed plant product with water; (3) a step of treating the plant and/or the processed plant product under an acidic condition; and (4) a step of separating and collecting a liquid fraction.