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:
Dec. 10, 2019
Filed:
Apr. 06, 2016
Applicant:
Unitaka Ltd., Amagasaki-shi, Hyogo, JP;
Inventors:
Yumeto Fukubayashi, Uji, JP;
Makoto Nakai, Uji, JP;
Akira Shigeta, Uji, JP;
Munenori Yamada, Uji, JP;
Assignee:
UNITIKA LTD., Amagasaki-Shi, Hyogo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 209/48 (2006.01); B01J 19/00 (2006.01); C07B 43/06 (2006.01); C07D 403/10 (2006.01);
U.S. Cl.
CPC ...
C07D 209/48 (2013.01); B01J 19/0013 (2013.01); C07B 43/06 (2013.01); C07D 403/10 (2013.01);
Abstract
An object of the present invention is to provide an industrially advantageous method for producing a bisimide dicarboxylic acid, which uses substantially no solvent and requires no granulation after completion of the reaction. The above object can be achieved by a method for producing a bisimide dicarboxylic acid with a tricarboxylic acid anhydride and a diamine, including the following processes (i) and (ii):