A textile printing ink including polymer particles, contains: first polymer particles; second polymer particles having a weight average molecular weight different from a weight average molecular weight of the first polymer particles; and a binding aid that crosslinks the polymer particles, on a surface, inside, or outside of the first polymer particles and the second polymer particles, wherein when a weight average molecular weight of a polymer contained in the first polymer particles is denoted by HMw.sub.1 and a weight average molecular weight of a polymer contained in the second polymer particles is denoted by LMw.sub.2, a ratio (LMw.sub.2/HMw.sub.1) of the weight average molecular weight of the polymer of the second polymer particles to the weight average molecular weight of the polymer of the first polymer particles is in a range of 0.01 to 0.20.

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.

The invention generally relates to fabric dyeing, such as fabric dyeing using indigo or sulphur dyes. A process is provided which provides a dyed yarn having reduced dye penetration and a white core. The process involves modification of existing sulfur dye ranges to more efficiently and in an environmentally improved method produce dyed fabrics. The modification involves one or more of i) using of a barrier compound to subsequent dye applications; ii) performing a scouring stage without a caustic agent; iii) bypassing scouring and/or scour rising; iv) using sodium bicarbonate to control the pH of dye tanks; v) reducing the dye concentration and increasing the number of dye vats; and vi) adding a sizing stage to the dye range. The invention also is directed to yarns dyed on dye ranges through use of the process, and fabrics formed from the dyed yarns.

The invention generally relates to fabric dyeing, such as fabric dyeing using indigo or sulphur dyes. A process is provided which provides a dyed yarn having reduced dye penetration and a white core. The process involves modification of existing sulfur dye ranges to more efficiently and in an environmentally improved method produce dyed fabrics. The modification involves one or more of i) using of a barrier compound to subsequent dye applications; ii) performing a scouring stage without a caustic agent; iii) bypassing scouring and/or scour rising; iv) using sodium bicarbonate to control the pH of dye tanks; v) reducing the dye concentration and increasing the number of dye vats; and vi) adding a sizing stage to the dye range. The invention also is directed to yarns dyed on dye ranges through use of the process, and fabrics formed from the dyed yarns.

An inkjet textile printing treatment liquid contains an aqueous medium and a pH sliding agent. An inkjet textile printing apparatus includes a recording head that ejects an ink toward an image formation area of a textile printing target and a first treatment head that ejects a first treatment liquid toward at least the image formation area of the textile printing target. The first treatment liquid is the above-described inkjet textile printing treatment liquid. An inkjet textile printing method incudes: inkjetting an ink toward an image formation area of a textile printing target; and inkjetting a first treatment liquid toward at least the image formation area of the textile printing target. The first treatment liquid is the above-described inkjet textile printing treatment liquid.

The present disclosure provides an ink fluid set containing an aqueous pre-treatment composition, a clear ink, and colored aqueous inkjet inks. This ink fluid set is particularly suitable for printing on polyester, cotton, and blends of cotton and synthetic textiles.

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.

A dye discharge composition exhibiting extended shelf life and/or pot life and high suitability for inkjet printing on dyed substrates, is disclosed. The composition comprises a reducing agent such as, for example, a sulfur-based reducing agent, and a chelating agent, such as a sodium salt of a polyamino carboxylic acid chelating agent. Use of the dye discharge composition in combination with a translucent colored composition and an optional opaque underbase composition, for forming an image on a dyed substrate is also disclosed. Processes for inkjet printing of an image on a dyed surface using the dye discharge composition, kits for use in such processes or an ink formulation containing same are also disclosed.

A dye discharge composition exhibiting extended shelf life and/or pot life and high suitability for inkjet printing on dyed substrates, is disclosed. The composition comprises a reducing agent such as, for example, a sulfur-based reducing agent, and a chelating agent, such as a sodium salt of a polyamino carboxylic acid chelating agent. Use of the dye discharge composition in combination with a translucent colored composition and an optional opaque underbase composition, for forming an image on a dyed substrate is also disclosed. Processes for inkjet printing of an image on a dyed surface using the dye discharge composition, kits for use in such processes or an ink formulation containing same are also disclosed.

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.