Printing ink compound and application thereof in cotton printing

Abstract

The invention discloses a printing ink compound and an application thereof in cotton printing. The printing ink compound comprises a water-based reactivedye ink A and a printing sizing agent B, wherein the water-based reactivedye ink A comprises 2-15% of P-type active dye, 2-8% of cationic fixing agent, a functional auxiliary and a solvent; the cationic fixing agent is formed by a dispersion phase and a solid phase; water is taken as the dispersion phase; the solid phase is prepared by adopting the following materials by weight percent: 32-63% of polyhydric alcohol, 16-38% of diisocyanate, 4-8% of cation chain extender, 11-29% of amino-containing ultraviolet ray absorber and 0.1-0.2% of catalyst; the printing sizing agent B is prepared from the following components by weight percent: 1-15% of printing paste, 1-10% of burnishing paste, 2-8% of sodium bicarbonate, 1-8% of urea and the balance of deionized water. The printing product made from the printing ink compound has the advantages of high color fixation rate, high light fastness, high crocking fastness, no bleeding phenomenon, high sizing agent releasing rate and no influence on fabric hand feeling.

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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