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. 08, 2011
Filed:
Oct. 30, 2008
Takaaki Kurata, Tokyo, JP;
Takashi Yoneda, Tokyo, JP;
Takafumi Fujii, Tokyo, JP;
Tadayuki Kiyoyanagi, Tokyo, JP;
Koji Hirota, Tokyo, JP;
Takaaki Kurata, Tokyo, JP;
Takashi Yoneda, Tokyo, JP;
Takafumi Fujii, Tokyo, JP;
Tadayuki Kiyoyanagi, Tokyo, JP;
Koji Hirota, Tokyo, JP;
Nippon Kayaku Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention relates to an aqueous solution composition (water-based ink composition) containing a water-soluble naphthalocyanine coloring matter represented by the following formula (1): wherein, M represents a hydrogen atom, a metal atom, a metal oxide, a metal hydroxide or a metal halide, X represents a carbonyl group or a sulfonyl group, Wto Ware each independently a hydrogen atom, an ionic hydrophilic group or the like, at least one of Wto Wis a group other than a hydrogen atom, and n represents an integer number of 1 to 24, respectively, or a salt thereof, and a novel naphthalocyanine coloring matter, and said compound is useful as a near-infrared ray absorbent because it has a high absorption in the near-infrared region, and it is useful as a near-infrared ray absorbing water-based ink because it has an excellent storage stability in aqueous solution.