COLORANT DISPERSION AND INK COMPOSITION FOR AQUEOUS INK JET RECORDING

To provide a colorant dispersion and an ink composition for aqueous ink jet recording which allow improvement in the long-term storage stability and the color development of a recorded material.SOLUTION: A colorant dispersion contains water, (meth)acrylic resin particles containing a disperse dye, a nonionic surfactant, and a tertiary amine compound represented by the formula (1) below. The (meth)acrylic resin particles have a glass transition temperature of 60°C or higher, and the content of the disperse dye is 10 mass% or more relative to the total mass of the (meth)acrylic resin particles. In the formula (1), R represents -(CH2CH2O)mH, an aliphatic group containing 6 to 18 carbon atoms, or an aromatic group, and each m independently represents an integer of 1 to 10.SELECTED DRAWING: None 【課題】長期保存における保存安定性と記録物の発色性を向上させる色材分散液および水性インクジェット記録用インク組成物を提供すること。【解決手段】色材分散液は、水と、分散染料を含む（メタ）アクリル系樹脂粒子と、非イオン系界面活性剤と、下記式（１）で表される三級アミン化合物と、を含み、（メタ）アクリル系樹脂粒子は、ガラス転移温度が６０℃以上であり、（メタ）アクリル系樹脂粒子の全質量に対して、分散染料を１０質量％以上含む。TIFF2022158425000008.tif22170（式中、Ｒは、－（ＣＨ2ＣＨ2Ｏ）mＨ、炭素数６以上１８以下の脂肪族基、または芳香族基を表し、ｍは各々独立して１以上１０以下の整数を表す。）【選択図】なし