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. 20, 2013
Filed:
Sep. 21, 2010
Takahiko Matsui, Tokyo, JP;
Takashi Yoshimoto, Tokyo, JP;
Hiroaki Ohno, Tokyo, JP;
Koji Hirota, Tokyo, JP;
Takashi Yoneda, Tokyo, JP;
Akira Kawaguchi, Tokyo, JP;
Takahiko Matsui, Tokyo, JP;
Takashi Yoshimoto, Tokyo, JP;
Hiroaki Ohno, Tokyo, JP;
Koji Hirota, Tokyo, JP;
Takashi Yoneda, Tokyo, JP;
Akira Kawaguchi, Tokyo, JP;
Nippon Kayaku Kabushiki Kaisha, Tokyo, JP;
Abstract
Azo compounds represented by general formula (1) or salts thereof are provided as highly water-soluble colorants which have hues of yellow, orange, brown or red, and excellent color development properties and which, when used in various recording processes, particularly in an inkjet recording process, ensure various excellent fastnesses such as light fastness, ozone fastness, and fading balance. Ink compositions containing the colorants are also provided. In general formula (1), Rto Rare each independently a hydrogen atom, C1-4 alkyl, C1-4 alkoxy, or the like; and X is C1-8 alkylenediamino, xylylenediamino, or the like.