Magenta coloring matter, ink composition, and colored body
AssigneeNippon Kayaku Kabushiki Kaisha
InventorsDaisuke Ono, Yutaka Ishii, Koji Hirota, Noriko Kajiura
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Abstract
As an ink composition which is highly soluble in water and has a hue and clarity suitable for inkjet recording, an ink composition containing at least one pigment represented by formula (1) or a salt thereof as a pigment is provided. In formula (1), Xa to Xc each independently represent a substituted or unsubstituted sulfoanilino group, a substituted or unsubstituted sulfonaphthylamino group, a hydroxy group, or the like, and at least one of Xa to Xc is a group other than a hydroxy group; R represents a hydrogen atom or the like; R1 represents an alkyl group or the like; and R3 and R4 each independently represent a hydrogen atom or the like.
Claims20
An ink composition comprising at least one coloring matter represented by the following formula (1) or a salt thereof:
- wherein,
- Xa to Xc each independently represent represents an unsubstituted sulfoanilino group;
- a sulfoanilino group substituted with a group selected from the group consisting of a C1-C12 alkyl group, a C1-C6 alkoxy group and a hydroxy group;
- an unsubstituted sulfonaphthylamino group;
- a sulfonaphthylamino group substituted with a C1-C4 alkyl group or a hydroxy group;
- or a hydroxy group;
- at least one of Xa to Xc is a group other than a hydroxy group;
- R represents a hydrogen atom, a carboxy group, a C1-C8 alkoxy group, a C1-C6 alkylthio group, a carbamoyl group, a cyano group, a C1-C8 alkyl group, an anilino group, a phenoxy group, an amino group, a hydroxy group, or a mercapto group;
- R1 represents a hydrogen atom, a C1-C8 alkyl group, a hydroxy C1-C4 alkyl group, a phenyl group, a mono(C1-C4 alkyl)amino C1-C4 alkyl group, a di(C1-C4 alkyl)amino C1-C4 alkyl group, or a cyano C1-C4 alkyl group;
- and
- R3 and R4 each independently represent represents a hydrogen atom or a C1-C8 alkyl group.
A magenta coloring matter consisting of at least one coloring matter represented by the following formula (1), or a salt thereof:
- wherein,
- Xa to Xc each independently represent represents an unsubstituted sulfoanilino group;
- a sulfoanilino group substituted with a group selected from the group consisting of a C1-C12 alkyl group, a C1-C6 alkoxy group and a hydroxy group;
- an unsubstituted sulfonaphthylamino group;
- a sulfonaphthylamino group substituted with a C1-C4 alkyl group or a hydroxy group;
- or a hydroxy group;
- at least one of Xa to Xc is a group other than a hydroxy group;
- R represents a hydrogen atom, a carboxy group, a C1-C8 alkoxy group, a C1-C6 alkylthio group, a carbamoyl group, a cyano group, a C1-C8 alkyl group, an anilino group, a phenoxy group, an amino group, a hydroxy group, or a mercapto group;
- R1 represents a hydrogen atom, a C1-C8 alkyl group, a hydroxy C1-C4 alkyl group, a phenyl group, a mono(C1-C4 alkyl)amino C1-C4 alkyl group, a di(C1-C4 alkyl)amino C1-C4 alkyl group, or a cyano C1-C4 alkyl group;
- and
- R3 and R4 each independently represents a hydrogen atom or a C1-C8 alkyl group.
Dependencies are inferred from the claim text.