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:
Feb. 25, 2014
Filed:
Jun. 08, 2010
Kenji Ooshima, Tokyo, JP;
Takashi Yoneda, Tokyo, JP;
Yasuo Kuroda, Tokyo, JP;
Akira Kawaguchi, Tokyo, JP;
Kenji Ooshima, Tokyo, JP;
Takashi Yoneda, Tokyo, JP;
Yasuo Kuroda, Tokyo, JP;
Akira Kawaguchi, Tokyo, JP;
Nippon Kayaku Kabushiki Kaisha, Tokyo, JP;
Abstract
Provided is a porphyrazine dye suitable for use in ink-jet recording, the porphyrazine dye giving a cyan ink with a satisfactory hue, having various excellent fastness properties, in particular, ozone resistance, and attaining a high color density. Also provided is an ink composition containing the dye. The porphyrazine dye is a porphyrazine dye represented by formula (1) or a salt thereof. In formula (1), rings A to D each independently represents a benzene ring, a nitrogenous heteroaromatic ring, etc.; E represents an alkylene; X represents sulfoanilino, etc.; R represents a hydrogen atom, sulfo, carboxy, etc.; group F represents phenyl, a nitrogenous heteroaromatic ring, etc.; a is an integer of 1-6; b is 0.00-3.90, excluding 3.90, on average; c is 0.10-4.00, excluding 4.00, on average; and the sum of b and c is 1.00-4.00, excluding 4.00, on average.