Abstract: A dispersion of the present disclosure includes a polyester functioning as a dispersant, water, and a dispersoid, and the polyester includes, as a monomer component, a first monomer having an aromatic ring on a side chain and a second monomer having at least one selected from the group consisting of a carboxy group which forms no ester bond and a sulfo group. A content of the first monomer with respect to all monomers forming the polyester is preferably 25 to 75 percent by mole.

Abstract: A dispersion of the present disclosure includes a polyester functioning as a dispersant, water, a dispersoid, and a solvent, the polyester has a carboxy group which forms no ester bond and a sulfo group, and the solvent includes a polyol having a log P of ?2.0 to 0.0. In the polyester, a rate of a content of a monomer having the carboxy group to a content of a monomer having the sulfo group is preferably 50% to 200% on a molar basis.

Abstract: An ink jet composition of the present disclosure includes water; a polyester resin having sulfo groups; and a colorant, the colorant is contained in particles formed from a material containing the polyester resin, and the particles have an average particle diameter of 100 nm or less and are contained in the ink jet composition at a content rate of 15 percent by mass or more.

Abstract: An ink jet composition of the present disclosure includes: water; a polyester resin having sulfo groups; and a colorant, the colorant is contained in particles formed from a material containing the polyester resin, and the sulfo groups have a high abundance ratio at a surface of each of the particles as compared to that at a center thereof.

Abstract: An ink jet composition of the present disclosure includes: water; a polyester resin having sulfo groups; a colorant; and a high molecular weight dispersant having anionic groups, the colorant is contained in particles formed from a material containing the polyester resin, and a rate X1 [percent on molar basis] of the sulfo groups to all constituent monomers of the polyester resin is lower than a rate X2 [percent on molar basis] of the anionic groups to all constituent monomers of the high molecular weight dispersant.

Abstract: A colorant dispersion contains water, (meth)acrylic resin particles containing a disperse dye, a nonionic surfactant, and a tertiary amine compound represented by Formula (1) below: where 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. The (meth)acrylic resin particles have a glass transition temperature of 60° C. or higher and contain 10% by mass or more of the disperse dye with respect to the total mass of the (meth)acrylic resin particles.

Abstract: An ink-jet ink composition contains water, a colorant, and resin particles made of a material containing polyester. The polyester has a sulfo group and contains a diol component and a dicarboxylic acid component. The diol component contains a diol component having a 1,3-propanediol skeleton.