A polyurethane is dyed with an aqueous solution of an acid dye compound, a quaternary ammonium compound selected from soluble tetrabutylammonium compounds and tetrahexylammonium compounds, and, optionally, an water-soluble organic solvent.

A method is provided for treating the surface of a shaped melded part produced with a plastic having ester, ketone and/or ether bonds. The plastic is selected from the group including a polymer, copolymer, polymer blend and combinations of the same. The method includes a pretreatment step for cationically modifying the surface of the melded shaped part. The cationic modification is carried out with a reactant dissolved in a solvent and having one or more amine, imine and/or amide groups.

A recording method includes a color ink deposition step of depositing an ink composition containing a pigment, resin particles, and water onto a recording medium by an ink jet method to form an image region, a first treatment liquid deposition step of depositing a first treatment liquid composition containing resin particles and water onto the recording medium by an ink jet method, and a second treatment liquid deposition step of depositing a second treatment liquid composition containing a softening agent onto the recording medium by an ink jet method, in which the image region has regions with different ink deposition amounts per unit area, the first treatment liquid deposition step and the second treatment liquid deposition step are carried out for at least the entire image region, and the deposition amount of the first treatment liquid composition is 12 mL/m.sup.2 or more.

Aqueous ink for textile printing comprising a disperse dye, a dispersant and lignin. A manufacturing method of this ink is provided. An inkjet recording method on textile fabric using the aqueous ink comprising a disperse dye, a dispersant and lignin is also provided.

Aqueous ink for textile printing comprising a disperse dye, a dispersant and lignin. A manufacturing method of this ink is provided. An inkjet recording method on textile fabric using the aqueous ink comprising a disperse dye, a dispersant and lignin is also provided.

An ink for ink-jet textile printing, the ink including a pigment, resin emulsion particles, an oxazoline-group-containing compound, and an aqueous medium, in which the resin emulsion particles have an average particle diameter of 150 nm or larger, a content of the resin emulsion particles is 10 to 20 mass % with respect to 100 mass % of the ink for ink-jet textile printing, and a content of the oxazoline-group-containing compound is contained in an amount of 0.5 to 10 mass % with respect to 100 mass % of the resin emulsion particles.

An ink for ink-jet textile printing, the ink including a pigment, resin emulsion particles, an oxazoline-group-containing compound, and an aqueous medium, in which the resin emulsion particles have an average particle diameter of 150 nm or larger, a content of the resin emulsion particles is 10 to 20 mass % with respect to 100 mass % of the ink for ink-jet textile printing, and a content of the oxazoline-group-containing compound is contained in an amount of 0.5 to 10 mass % with respect to 100 mass % of the resin emulsion particles.