The present disclosure pertains to an aqueous inkjet ink containing a pigment as colorant, a polymeric dispersant, a polymeric binder, and a water-insoluble additive. The inks show improved properties for printing on paper and textile.

An ink jet textile printing ink set of the present disclosure includes an ink composition and a process liquid composition, wherein the process liquid composition contains a cationic compound and a compound having one quaternary ammonium in its molecule, and the ink composition contains a pigment and an organic solvent, where the organic solvent is a polyhydric alcohol solvent and the content thereof is 10.0 mass % or more and 55.0 mass % or less.

An ink jet textile printing ink composition includes water; a color material; and a metal chelating agent. In the ink composition described above, the metal chelating agent includes at least one selected from methyl glycine diacetic acid, L-glutamate diacetic acid, L-aspartic diacetic acid, hydroxyethylimino diacetic acid, 3-hydroxy-2,2-iminodisuccucinic acid, dicarboxymethyl glutamic acid, (S,S)-ethylenediaminedisuccinic acid, and salts thereof, and the pH of the ink composition is 6 to 10.

An ink jet textile printing ink composition includes water; a color material; and a metal chelating agent. In the ink composition described above, the metal chelating agent includes at least one selected from methyl glycine diacetic acid, L-glutamate diacetic acid, L-aspartic diacetic acid, hydroxyethylimino diacetic acid, 3-hydroxy-2,2-iminodisuccucinic acid, dicarboxymethyl glutamic acid, (S,S)-ethylenediaminedisuccinic acid, and salts thereof, and the pH of the ink composition is 6 to 10.

A treatment solution composition is provided and is a treatment solution applied to fabric and used in textile printing and contains a cationic compound, betaine, and water.

A treatment liquid composition for use in ink jet pigment textile printing and used by attaching it to fabric contains a cationic compound, at least one compound selected from polyvinylpyrrolidones, polyethylene oxides, carboxymethyl celluloses, hydroxyethyl celluloses, and polyvinyl alcohols, and water. The fabric contains polyester.

A method of treating a material, the method comprising the steps of: (1) contacting the material with a composition comprising an electrophilic species selected from aldehydes, succinimidyl esters, and mixtures thereof; (2) contacting the material with a composition comprising a chelating agent and/or a salt of an amine and/or a carboxylic acid.

A method of combatting colour loss from a dyed material, the method comprising the steps of: (1) contacting the material with a composition comprising an electrophilic species selected from aldehydes, succinimidyl esters, and mixtures thereof; (2) contacting the material with a composition comprising a chelating agent and/or a salt of an amine and/or a carboxylic acid.

A method of combatting colour loss from a dyed material, the method comprising contacting the material with a composition comprising a polycarboxylic acid derived chelating agent.

An ink jet textile printing penetrant includes a water-soluble organic solvent; a surfactant; and one type or two or more types selected from the group consisting of a chelating agent and an aromatic compound.