Trisazo Compound, Ink Composition, Recording Method, and Colored Article
First Claim
1. A trisazo compound represented by the following formula (1) in free acid form (wherein, the group A is a substituted phenyl group and has a substituent selected from the group consisting of a carboxy group, a sulfo group, a chlorine atom, a cyano group, a nitro group, a sulfamoyl group, a C1 to C4 alkyl group, a C1 to C4 alkoxy group (which may be substituted by a hydroxy group, a C1 to C4 alkoxy group, a sulfo group or a carboxy group) and a C1 to C4 alkylsulfonyl group (which may be substituted by a hydroxy group, a sulfo group or a carboxy group),B and C are substituted para-phenylene groups and have a substituent selected from the group consisting of a carboxy group, a sulfo group, a C1 to C4 alkyl group and a C1 to C4 alkoxy group (which may be substituted by a hydroxy group, a C1 to C4 alkoxy group, a sulfo group or a carboxy group),R1 represents a C1 to C4 alkyl group which may be substituted by a carboxy group, a phenyl group which may be substituted by a sulfo group, or a carboxy group,R2 represents a cyano group, a carbamoyl group or a carboxy group,each of R3 and R4 independently represents a hydrogen atom, a methyl group, a chlorine atom or a sulfo group, respectively) or a salt thereof.
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Accused Products
Abstract
The present invention relates to a trisazo compound represented by the following formula (1) or a salt thereof,
The formula (1)
(wherein, the group A is a substituted phenyl group, the group B and the group C are substituted para-phenylene groups, R1 represents a C1 to C4 alkyl group (which may be substituted by a carboxy group), a phenyl group (which may be substituted by a sulfo group), or a carboxy group,
R2 represents a cyano group, a carbamoyl group or a carboxy group, each of R3 and R4 independently represents a hydrogen atom, a methyl group, a chlorine atom or a sulfo group, respectively) and a water-based black ink composition containing said compound; said compound has high solubility in a medium where the main component is water, its aqueous solution having a high concentration and ink are stable when stored for a long period of time, black-recorded images with it can be provided where both light fastness and ozone gas fastness of the printed images are excellent.
21 Citations
23 Claims
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1. A trisazo compound represented by the following formula (1) in free acid form
(wherein, the group A is a substituted phenyl group and has a substituent selected from the group consisting of a carboxy group, a sulfo group, a chlorine atom, a cyano group, a nitro group, a sulfamoyl group, a C1 to C4 alkyl group, a C1 to C4 alkoxy group (which may be substituted by a hydroxy group, a C1 to C4 alkoxy group, a sulfo group or a carboxy group) and a C1 to C4 alkylsulfonyl group (which may be substituted by a hydroxy group, a sulfo group or a carboxy group), B and C are substituted para-phenylene groups and have a substituent selected from the group consisting of a carboxy group, a sulfo group, a C1 to C4 alkyl group and a C1 to C4 alkoxy group (which may be substituted by a hydroxy group, a C1 to C4 alkoxy group, a sulfo group or a carboxy group), R1 represents a C1 to C4 alkyl group which may be substituted by a carboxy group, a phenyl group which may be substituted by a sulfo group, or a carboxy group, R2 represents a cyano group, a carbamoyl group or a carboxy group, each of R3 and R4 independently represents a hydrogen atom, a methyl group, a chlorine atom or a sulfo group, respectively) or a salt thereof.
Specification