The disclosure provides a dyeing method using bio-dye. A first compound containing an X group is reacted with a second compound containing a Y group to form a third compound, in which the X group is selected from the group consisting of an isocyanate group, a carbodiimide group, an aziridinyl group and an epoxy group, the Y group is selected from the group consisting of a hydroxyl group and an amine group, and the second compound is an amine compound and contains two or more Y groups. Cationization of the third compound is carried out with a fourth compound containing a carboxyl group to form a cationic modification agent. A cationic modification treatment is performed on a fiber material by using the cationic modification agent to form a cationized fiber material. Thereafter, a dyeing treatment is performed on the cationized fiber material through a dye solution containing bio-dye to color the cationized fiber material.

The present invention provides a method for providing a printed article, comprising printing an aqueous ink composition onto a fibrous substrate and curing the ink, wherein the ink composition comprises a polyurethane dispersion having the properties of (a) ketone or aldehyde groups present at one or more polymer chain ends; (b) a number average molecular weight 50,000 and; (c) the content of ketone and aldehyde groups is in the range 0.02 to 4.0 mmol g-1, based on the dry polymer weight. The present invention also provides use of said ink composition for printing onto a fibrous substrate.

An example of an inkjet ink for textile printing includes a self-dispersed pigment. The self-dispersed pigment includes a pigment and an organic group attached thereto, the organic group including at least one phosphorus-containing group. The inkjet ink also includes a poly-ester-polyurethane binder and a liquid vehicle. The inkjet ink may be used in a printing method and/or in a textile printing kit.

A liquid fabric treatment composition including a hydrocarbon wax, a crosslinking agent, and a polyester warp sizing agent. The liquid fabric treatment composition may include a disperse dye. Methods of using these compositions for dyeing cellulose-containing fabric with a disperse dye include contacting a fabric containing cellulose with a liquid fabric treatment composition to yield a pretreated fabric, and heating the pretreated fabric to yield a treated fabric. The treated fabric contains a urethane compound formed by a reaction of the hydrocarbon wax, the crosslinking agent, and the cellulose of the fabric.

The present invention provides the use of fibres comprising one or more composite filaments of cellulose and cellulose acetate, as a bleach activator.

The present invention provides a coloured fibre comprising one or more composite filaments of cellulose and cellulose acetate, wherein the colour is effected by a disperse dye.

A treatment liquid composition for dye printing according to the present disclosure is used in a state of being attached to a fabric and includes resin particles, a crosslinking agent, an organic solvent, and water, in which the organic solvent has an SP value of 13.5 or less, the organic solvent has a standard boiling point of 100? C. or higher, and the content of the organic solvent is 5% by mass or more with respect to the total amount of the treatment liquid composition.

A textile material comprises a plurality of yarns, the yarns containing an intimate blend of dyed polyphenylene sulfide fibers and aramid fibers. The dyed polyphenylene sulfide fibers comprising a disperse dye that is distributed substantially evenly across the cross-sectional area of the fibers. A method for dyeing textile materials containing polyphenylene sulfide fibers comprises the steps of (a) providing a plurality of polyphenylene sulfide fibers and aramid fibers; (b) spinning the blend of fibers into a plurality of yarns; (c) forming the yarns into a textile material; (d) subjecting the textile material to a polyphenylene sulfide dyeing process.

Provided are a textile printing ink set including a pretreatment liquid including a cationic compound having a molecular weight per cationic valence of 150 to 220, and an ink composition including a water-insoluble dye, a dispersing agent, and water, wherein the dispersing agent is at least one selected from the group consisting of a urethane resin, a urea resin, and a urethane-urea resin; and a textile printing method.

A textile material comprises a plurality of yarns, wherein the yarns contain an intimate blend of dyed polyphenylene sulfide fibers and cellulosic fibers. The dyed polyphenylene sulfide fibers comprise a disperse dye that is distributed substantially evenly across the cross-sectional area of the fibers. A method for dyeing textile materials containing polyphenylene sulfide fibers comprises the steps of (a) providing a textile material comprising yarns which contain an intimate blend of polyphenylene sulfide fibers and cellulosic fibers, (b) providing a dye liquor comprising a liquid medium and a disperse dye, (c) applying the dye liquor to the textile material, (d) heating the textile material under ambient atmosphere to a temperature sufficient to evaporate substantially all of the liquid medium from the textile material, and (e) heating the textile material under ambient atmosphere to a temperature of about 180? C. or more to fix the disperse dye to the polyphenylene sulfide fibers.