Novel Azo Compound or Salt, Ink Composition Comprising Such Azo Compound, and Colored Article
申请人:Ishii Yutaka
公开号:US20080011191A1
公开(公告)日:2008-01-17
[Method for solving the problems]The present invention relates to an azo compound represented by the following Formula (1) in free acid form or a salt thereof,
[KA 1]
(wherein, D represents a residual group of aromatic ring or heterocyclic diazo components, R
1
represents a hydrogen atom, a C1 to C4 alkyl group or a trifluoromethyl group, R
2
represents a hydrogen atom, a cyano group or a carbamoyl group, R
3
, R
4
, R
5
and R
6
may be the same or different respectively and each represents a hydrogen atom, a C1 to C4 alkyl group substituted by a sulfonic acid group or a carboxyl group) and an ink composition characterized by comprising the same, and said composition is excellent in storage stability, exhibits orange color by itself and hue with highly vividness when used for inkjet recording, provides strong fastnesses such as light fastness and ozone fastness of a recorded article, and is suitable for inkjet recording.