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:
Sep. 17, 2013
Filed:
Apr. 14, 2010
Takashi Yoneda, Tokyo, JP;
Kenji Ooshima, Tokyo, JP;
Akira Kawaguchi, Tokyo, JP;
Yuka Shishikura, Tokyo, JP;
Tomoki Fujita, Tokyo, JP;
Takashi Yoneda, Tokyo, JP;
Kenji Ooshima, Tokyo, JP;
Akira Kawaguchi, Tokyo, JP;
Yuka Shishikura, Tokyo, JP;
Tomoki Fujita, Tokyo, JP;
Nippon Kayaku Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention relates to a porphyrazine coloring matter or a salt thereof represented by the following formula (1) [wherein, the rings of A to D are each independently a benzene ring or a 6-membered nitrogen-containing heteroaromatic ring, E is alkylene, X is a sulfo-substituted anilino group or the like which may further have a substituent, Ris a C1-C6 alkyl group, b is 0.00 or more and less than 3.90 as an average value, c is 0.10 or more and less than 4.00 as an average value, and the sum of b and c is 1.00 or more and less than 4.00 as an average value]. The ink composition containing the porphyrazine coloring matter of the present invention has a good hue as a cyan ink, is excellent in various fastness properties, particularly in ozone fastness, allows a high print density, has properties hardly causing bronze phenomenon, and can provide a porphyrazine coloring matter suitable for inkjet recording and an ink composition containing this.