Azo compounds, ink compositions, and colored bodies

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United States of America Patent

PATENT NO 8512462
APP PUB NO 20120202019A1
SERIAL NO

13498431

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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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), R1 to R8 are each independently a hydrogen atom, C1-4 alkyl, C1-4 alkoxy, or the like; and X is C1-8 alkylenediamino, xylylenediamino, or the like.

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Patent Owner(s)

Patent OwnerAddress
NIPPON KAYAKU KABUSHIKI KAISHA1-1 MARUNOUCHI 2-CHOME CHIYODA-KU TOKYO 1000005 ?1000005

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hirota, Koji Tokyo, JP 26 182
Kawaguchi, Akira Tokyo, JP 54 647
Matsui, Takahiko Tokyo, JP 17 131
Ohno, Hiroaki Tokyo, JP 37 289
Yoneda, Takashi Tokyo, JP 52 366
Yoshimoto, Takashi Tokyo, JP 133 1122

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