Reactive dye ink-jetting ink for textile digital printing and a production process thereof

Abstract

Reactive dye ink-jetting ink for textile digital printing is disclosed. The ink includes, by weight, (a) 1-10% of dye, (b) 10-15% of a humectant, (c) 1-5% of an anti-scaling agent, (d) 0.2-1% of a sterilizing agent, (e) 1-5% of a pH value controlling agent and (f) 0.5-5% of a penetrant, with the balance being deionized water. The invention also discloses a production process of the ink. The process includes (A) mixing the dye, the humectant, the anti-scaling agent, the sterilizing agent, the pH value controlling agent, the penetrant and the deionized water at room temperature, and fully stirring the mixture for 0.5-1 h to obtain a mixed solution; (B) allowing the mixed solution to stand at 50-70 DEG C for 24-48 h to cure the mixed solution to obtain a cured mixed solution; and (C) filtering the cured mixed solution by filtration membranes having sizes of 1 micron, 0.5 micron and 0.22 micron in order to obtain a final product. The ink can be applied in paper printing, and can be adopted as the reactive dye ink-jetting ink for textile digital printing.

Description

technical field [0001] The invention relates to an inkjet ink and a production method thereof, in particular to a textile digital printing reactive dye inkjet ink and a production process thereof. Background technique [0002] Inkjet printing has been used in the textile industry for many years. This method can save the production of printing screens, so it can save a lot of time and cost. Changes required. [0003] When inkjet ink is applied in the textile industry, the stability, color fastness, washing fastness, and degree of hydrolysis of the ink all need to meet higher requirements. Most of the inks used in the existing textile industry are reactive dye inks, acid dyes or Disperse dyes, among them, the pH value of reactive dyes is easy to increase, and they are prone to hydrolysis or alcoholysis in water, thereby reducing the color fastness of textile printing. Generally, the validity period is not more than three months. It is easy to decompose and cannot be stored f...

AI Technical Summary

Problems solved by technology

[0003] When inkjet ink is applied in the textile industry, the stability, color fastness, washing fastness, and degree of hydrolysis of the ink all need to meet higher requirements. Most of the inks used in the existing textile industry are reactive dye inks, acid dyes or Disperse dyes, among them, the pH value of reactive dyes is easy to increase, and they are prone to hydrolysis or alcoholysis in water, thereby reducing the color fastness of textile printing. Generally, the validity period is not more than three months. It is easy to decompose and cannot be stored for a long time. In addition, because it contains a lot of impurities, it is easy to block the nozzle

[0004] U.S. Patent No. 5,603,756 discloses an ink for textile printing, which includes at least one reactive dye, a polyhydric alcohol, and water, wherein the ink also includes a reaction product of the reactive dye and polyhydric alcohol, but Due to the lack of proper composition of the ink used for this textile printing, the coloring power and color fastness were not good

[0005] U.S. Patent No. 6015454 discloses an ink comprising at least one reactive dye and 1,2-propanediol or N-methyl-2-pyrrolidone, which improves the coloring strength and color fastness. But for long-term storage, not easy to damage the nozzle, etc., there is still room for improvement