An ink jet ink composition contains a dye having an azo group, water, and a hindered amine compound having a radical. The dissolved nitrogen concentration of the ink composition is 10 ppm or less.

An ink jet ink composition contains a dye having an azo group, water, and a hindered amine compound having a radical. The dissolved nitrogen concentration of the ink composition is 10 ppm or less.

The present invention relates to the use of reactive colourless and metal-free protein cross-linking agents for the cross-linking (tanning) of protein-containing substrates, said agents are environmentally friendly and give an improved fixation yield, a long-term cross-linking (tanning) stability and good washing off properties. The present invention further relates to processes for the cross-linking (tanning) of protein-containing substrates thereby creating an environmentally friendly process which minimizes the use of chemicals and further improves the quality and efficiency of the tanning and dyeing process.

##STR00001##

Disclosed is an environmentally friendly method that enables the pre-treatment and dyeing processes applied to cellulosic products used in the production of textile products such as towels, bathrobes to be carried out in a single bath with natural, biological preparations.

A textile dyeing process is described for dyeing a textile material, product or article consisting of animal fibers, comprising the steps of dipping said textile material, product or article into a dyeing bath comprising at least one detergent substance, a wetting substance, a leveling substance and an acidity regulator; adding to the dyeing bath a coloring substance approved for food use; subjecting the dyed textile material, product or article to washes; and finally subjecting the dyed textile material, product or article to a color fixing treatment.

A transfer-printing ink is ejected onto a transfer paper base on an ink-jet recording device when transfer paper is prepared, and is transferred from the transfer paper to cloth when the transfer paper with the cloth laid over it is heated. The ink contains a pigment, an anionic fixing resin, and a volatile amine as a neutralizer for neutralizing the fixing resin. The average particle diameter of the pigment is 30 nm to 150 nm. The pigment-to-fixing resin mass ratio is 1:1 to 1:5. The added amount of the volatile amine is 0.8 to 1.5 times the neutralization equivalent.

A treatment agent for image recording includes a cationic polymer emulsion and a cationic surfactant. A set usable for recording on a fabric includes a water-based ink for ink-jet recording including a colorant and water; and the treatment agent for image recording. A recording method for recording on a fabric by using the set includes: applying the treatment agent for image recording to the fabric; drying the treatment agent for image recording applied to the fabric; and jetting the water-based ink onto the fabric by an ink-jet system.

A treatment agent for image recording includes a cationic polymer emulsion and a cationic surfactant. A set usable for recording on a fabric includes a water-based ink for ink-jet recording including a colorant and water; and the treatment agent for image recording. A recording method for recording on a fabric by using the set includes: applying the treatment agent for image recording to the fabric; drying the treatment agent for image recording applied to the fabric; and jetting the water-based ink onto the fabric by an ink-jet system.

A dye additive suitable for use in improving the dyeing of aramid fibers includes non-water components dissolved in water. The non-water components include about 20-25% (w/w) sodium or potassium nitrate; about 20-25% (w/w) ketone solvent; about 30-40% (w/w) aromatic solvent; about 1-5% (w/w) of each of glycol ether, biodegradable solvent, acetic acid 56% strength or equivalent or equivalent amount of formic acid, brine salt, sodium or potassium hydroxide, and phenylenediamine, about 1-10% (w/w) of each of a strong acid, hydroxycarboxylic acid, and lanolin; wherein the water makes up about 50-70% of the weight of the dye additive and the non-water components make up about 30-50% of the dye additive. The dye additive may be added to a dye bath at a w/w percentage of about 0.25% to about 6%.

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.