Abstract: The present invention provides a dispersant excellent in the solubility to a solvent, the adsorption power to a coloring material, and the coloring material dispersibility, and reduced in the self-coloring property, a compound and a polymerizable compound for preparing the dispersant, and a toner using the dispersant. The dispersant has a structure in which a structure represented by the following specific formula (3) or a tautomer thereof is bonded with a polymer, and the toner contains the dispersant.

Abstract: The present invention provides a dispersant excellent in the solubility to a solvent, the adsorption power to a coloring material, and the coloring material dispersibility, and reduced in the self-coloring property, a compound and a polymerizable compound for preparing the dispersant, and a toner using the dispersant. The dispersant has a structure in which a structure represented by the following specific formula (3) or a tautomer thereof is bonded with a polymer, and the toner contains the dispersant.

Abstract: To provide a pigment dispersion liquid which provides an ink capable of recording an image having high fixability and fastness such as scratch resistance and excellent quality stably for a long time in any conditions. A pigment dispersion liquid mainly containing a polymer dispersant, a coloring material and water, in which the polymer dispersant is formed of at least a hydrophobic unit and a hydrophilic unit, the hydrophobic unit having a block portion formed of at least one hydrophobic monomer, the coloring material is formed of a pigment having on its surface an acid form anionic group, and the pigment dispersion liquid further contains a basic compound capable of forming a complex with an alkaline metal.

Abstract: A pigment dispersion liquid capable of stably recording images having high fastness and excellent quality for a long term in any cases has been provided. A pigment dispersion liquid mainly containing a polymer dispersant, a pigment and water, wherein the polymer dispersant is a copolymer comprised of at least a hydrophobic unit and a hydrophilic unit, the hydrophobic unit has a block portion comprised of at least one hydrophobic monomer, the hydrophilic unit has at least a repeating unit structure of an acrylamide structure of the following general formula (1), and the segment number (A) of the block portion comprised of a hydrophobic monomer to the number (B) of all segments of the polymer dispersant is in a range of 0.07 to 0.85 in terms of A/B ratio.

Abstract: Disclosed herein is a resin-containing composition comprising a solvent, a coloring material insoluble in the solvent and a block polymer compound having a repeating structural unit represented by the following general formula (1): wherein X is a polyalkenyl group which may be substituted, A is a linear or branched alkylene group having 1 to 15 carbon atoms, which may be substituted, at least one CH2 of the alkylene group may be substituted by O, m is an integer of from 0 to 30, the respective A groups may be different from each other when m is plural, Y is at least one of S, O and Se with the proviso that Y contains at least one S and that S, O and Se are each linked via a single bond, and R is a linear or branched alkyl group which may be substituted, an aromatic ring which may be substituted, or a structure in which at most 3 fused rings or aromatic rings, which may be substituted, are bonded via a single bond.

Abstract: To provide a pigment dispersion liquid which provides an ink capable of recording an image having high fixability and fastness such as scratch resistance and excellent quality stably for a long time in any conditions. A pigment dispersion liquid mainly containing a polymer dispersant, a coloring material and water, in which the polymer dispersant is formed of at least a hydrophobic unit and a hydrophilic unit, the hydrophobic unit having a block portion formed of at least one hydrophobic monomer, the coloring material is formed of a pigment having on its surface an acid form anionic group, and the pigment dispersion liquid further contains a basic compound capable of forming a complex with an alkaline metal.

Abstract: A pigment dispersion liquid capable of stably recording images having high fastness and excellent quality for a long term in any cases has been provided. A pigment dispersion liquid mainly containing a polymer dispersant, a pigment and water, wherein the polymer dispersant is a copolymer comprised of at least a hydrophobic unit and a hydrophilic unit, the hydrophobic unit has a block portion comprised of at least one hydrophobic monomer, the hydrophilic unit has at least a repeating unit structure of an acrylamide structure of the following general formula (1), and the segment number (A) of the block portion comprised of a hydrophobic monomer to the number (B) of all segments of the polymer dispersant is in a range of 0.07 to 0.85 in terms of A/B ratio.

Abstract: Disclosed herein is a resin-containing composition comprising a solvent, a coloring material insoluble in the solvent and a block polymer compound having a repeating structural unit represented by the following general formula (1): wherein X is a polyalkenyl group which may be substituted, A is a linear or branched alkylene group having 1 to 15 carbon atoms, which may be substituted, at least one CH2 of the alkylene group may be substituted by O, m is an integer of from 0 to 30, the respective A groups may be different from each other when m is plural, Y is at least one of S, O and Se with the proviso that Y contains at least one S and that S, O and Se are each linked via a single bond, and R is a linear or branched alkyl group which may be substituted, an aromatic ring which may be substituted, or a structure in which at most 3 fused rings or aromatic rings, which may be substituted, are bonded via a single bond.