WATER-SOLUBLE AZO COMPOUND OR SALT THEREOF, INK COMPOSITION, AND COLORED OBJECT

WIPO Patent Application WO/2012/090933

A1

The purpose of the present invention is to provide: a water-soluble yellow colorant (compound) which is highly soluble in water, has high color-developing properties, and gives recorded images having an excellent chroma; and a yellow ink composition which contains the colorant and is for use in various kinds of recording, in particular, ink-jet recording. The colorant is a water-soluble azo compound represented by formula (1) or a salt thereof. The ink composition, which contains the compound or salt, has high color-developing properties, has a chroma and a hue that are suited for ink-jet recording, gives recorded matter having high fastness properties of various kinds, and gives recorded images that are excellent in terms of storage stability or the like. In formula (1), x is an integer of 2-4, and group A represents an amino group represented by any of formulae (2) to (6). In formula (2), w is an integer of 2-6. In formula (3), v is an integer of 1-3.

MORITA RYOUTAROU (JP)
SHIBUYA YUUKI (JP)
SHISHIKURA YUKA (JP)
KAJIURA NORIKO (JP)

PCT/JP2011/080063

July 05, 2012

December 26, 2011

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NIPPON KAYAKU KK (JP)
MORITA RYOUTAROU (JP)
SHIBUYA YUUKI (JP)
SHISHIKURA YUKA (JP)
KAJIURA NORIKO (JP)

C09B43/16; B41J2/01; B41M5/00; B41M5/50; B41M5/52; C07D251/54; C09B67/44; C09D11/00

WO2010146994A1	2010-12-23
WO2010125903A1	2010-11-04
WO2009066412A1	2009-05-28

JP2006152264A	2006-06-15
JPH04233975A	1992-08-21

SHOBAYASHI, Masayuki (JP)
Right wood Masayuki (JP)

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