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:
Mar. 11, 2008
Filed:
Mar. 31, 2004
Applicants:
Yoshinori Hama, Wakayama, JP;
Norio Ueyama, Wakayama, JP;
Inventors:
Yoshinori Hama, Wakayama, JP;
Norio Ueyama, Wakayama, JP;
Assignee:
Kao Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08L 33/02 (2006.01); C08L 33/08 (2006.01); C08L 33/10 (2006.01); C08L 25/08 (2006.01); C08L 67/00 (2006.01); C08L 75/00 (2006.01); C09D 11/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for preparing an aqueous dispersion of a pigment, comprising kneading a mixture containing a pigment, a polymer having a salt-forming group, a neutralizing agent for neutralizing the polymer having a salt-forming group, an organic solvent and water, wherein the concentration of the solid matter is 50 to 80% by weight; adding water and/or an organic solvent to the resulting kneaded mixture to dilute the mixture; and dispersing the solid matter in the resulting diluted mixture; and a water-based ink comprising the aqueous dispersion of a pigment.