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:
Feb. 27, 2018
Filed:
Oct. 23, 2014
Applicant:
Dic Corporation, Tokyo, JP;
Inventors:
Assignee:
DIC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B 48/00 (2006.01); C09B 67/54 (2006.01); C09D 11/037 (2014.01); C09D 11/322 (2014.01); C09B 67/22 (2006.01); C09D 7/00 (2018.01); G03G 9/09 (2006.01); C07D 221/18 (2006.01);
U.S. Cl.
CPC ...
C09B 48/00 (2013.01); C09B 67/0033 (2013.01); C09B 67/0036 (2013.01); C09B 67/0096 (2013.01); C09D 7/007 (2013.01); C09D 11/037 (2013.01); C09D 11/322 (2013.01); G03G 9/0922 (2013.01); C07D 221/18 (2013.01);
Abstract
Provided are a quinacridone pigment having a low content of a primary aromatic amine, a method for producing the same, and also a gravure and flexo ink, a colorant for plastic, a paint, a lithographic ink, a toner, or an ink-jet ink using the pigment. The quinacridone pigment having a low primary aromatic amine content is provided by washing a quinacridone pigment with at least one solvent selected from water and an organic solvent, or by adding an oxidizing agent to a pigment slurry including a quinacridone pigment and at least one solvent selected from water and an organic solvent to oxidatively decompose the aromatic amine.