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:
Jan. 01, 2013
Filed:
Mar. 24, 2009
Kazunori Shigemori, Tokyo, JP;
Tomoko Tachibana, Tokyo, JP;
Yasushi Ariyoshi, Tokyo, JP;
Ken Yamazaki, Tokyo, JP;
Atsushi Yoda, Tokyo, JP;
Daisuke Fujiwara, Tokyo, JP;
Atsushi Nakazato, Tokyo, JP;
Tsutomu Hiroshima, Tokyo, JP;
Kazunori Shigemori, Tokyo, JP;
Tomoko Tachibana, Tokyo, JP;
Yasushi Ariyoshi, Tokyo, JP;
Ken Yamazaki, Tokyo, JP;
Atsushi Yoda, Tokyo, JP;
Daisuke Fujiwara, Tokyo, JP;
Atsushi Nakazato, Tokyo, JP;
Tsutomu Hiroshima, Tokyo, JP;
Toyo Ink Manufacturing Co., Ltd., Tokyo, JP;
Abstract
A dispersing agent characterized in that said dispersing agent is prepared by reacting primary and/or secondary amino groups of an amine compound comprising a polyamine (C) with isocyanate groups of a urethane prepolymer (E) having two isocyanate groups in one terminal region, wherein said urethane prepolymer (E) has been prepared by reacting hydroxyl groups in a vinyl polymer (A) having two hydroxyl groups in one terminal region with isocyanate groups in diisocyanates (B), and in that an amine number of said dispersing agent is 1 to 100 mgKOH/g is disclosed. The dispersing agent of the present invention has excellent dispersibility, flowability, and storage stability when used in small quantities. A pigment-dispersed product can be prepared therefrom, independently of the kinds of binder resin or solvent used. Further, the present invention is suitable for offset ink, gravure ink, resist ink for a color filter, inkjet ink, coating composition, and colored resin composition.