A kind of printing ink composition and its application in cotton cloth printing

Abstract

The invention discloses a printing ink composition and its application in cotton cloth printing. The printing ink composition includes water-based reactive dye ink A and printing sizing agent B, and the water-based reactive dye ink A includes 2~15% P-type reactive dye, 2~8% cationic color fixing agent, and functional auxiliary agent and solvent; the cationic color fixing agent is composed of a dispersed phase and a solid phase, the dispersed phase is water, and the solid phase is prepared from the following substances calculated by weight percentage: polyhydric alcohol 32 ~ 63%; two 16-38% of isocyanate; 4-8% of cationic chain extender; 11-29% of ultraviolet absorber containing amino group; 0.1-0.2% of catalyst; the printing sizing agent B is composed of the following components calculated by weight percentage: 1 ~15% printing paste, 1~10% color enhancing paste, 2~8% sodium bicarbonate, 1~8% urea, the balance is deionized water. The printing product made by using the printing ink composition has high color fixing rate, good light fastness, good rubbing fastness, no bleeding phenomenon, and the sizing agent has a high depaste rate and does not affect the fabric feel.

Description

technical field [0001] The invention relates to the technical field of cotton inkjet printing, in particular, the invention relates to a printing ink composition and its application in cotton printing. Background technique [0002] Reactive dyes have the characteristics of bright color, complete chromatogram, low production cost, high color fastness, simple application process, and no carcinogenic groups in structure. Since their introduction in 1930, they have maintained a huge advantage in cotton printing. However, traditional reactive dye printing not only has a low color fixation rate, but also has high salt and urea in the printing and dyeing process, which is not environmentally friendly. In addition, when the reactive dye is excited by lower-energy visible light, it will undergo photooxidative fading with oxygen in the environment, and its resistance to sunlight is poor. Therefore, improving the color fixation rate of reactive dyes while maintaining their reactivity ...

AI Technical Summary

Problems solved by technology

[0003] In recent years, after a lot of research by domestic and foreign workers, many liquid reactive dyes and reactive dye printing ink formulations have come out, and the storage time of reactive dyes in water-based environments has also been extended from several days to half a year, but most of them have direct printing and dyeing fixation rates. Low, the defect that it cannot be dyed evenly in large color blocks, even the digital printing method that has become popular in recent years, the printing has not fully adapted to the new reactive dye ink, and the printing pattern is lighter in color, and the phenomenon of color difference and color flowering occurs

my country's cotton printing technology research on reactive dyes is still in its infancy. Most of the domestic technologies are derived from foreign research results decades ago. There is still a big gap with the world's leading level, and the commercialization of cotton printing with reactive dyes has not been realized.

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