マゼンタ色素、インク組成物及び着色体

Magenta pigment, ink composition, and colored body

Abstract

【課題】水に対する溶解性が高く、インクジェット記録に適する色相と鮮明性を有し、且つ記録物の耐水性に優れたマゼンタ色素又はその塩、及びそれを含有するインク組成物の提供。 【解決手段】式(1)で表されるマゼンタ色素又はその塩、 [式中、R 11 は水素原子等、R 12 は水素原子等、R 13 及びR 14 はそれぞれ独立に水素原子、スルホ基等、基Bは少なくとも1つのヒドロキシ基を有するナフチル基等をそれぞれ表す。] 【選択図】なし
PROBLEM TO BE SOLVED: To provide magenta pigment or its salt high in solubility in water, having hue and sharpness suitable to inkjet recording, and excellent in water resistance of recorded matter; and an ink composition including the same.SOLUTION: There is disclosed magenta pigment or its salt expressed by formula (1), where in the formula, Rrepresents a hydrogen atom or the like; Rrepresents a hydrogen atom or the like; Rand Reach independently represents a hydrogen atom, a sulfo group or the like; and the group B represents a naphthyl group having at least a hydroxy group, or the like.

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