A kind of anti-white paste for reactive dye physical resist printing and preparation method thereof

Abstract

The invention belongs to the technical field of textile printing and dyeing, and in particular relates to an anti-white pulp used for physical anti-printing of reactive dyes and a preparation method thereof. The raw materials of anti-white paste for physical anti-printing reactive dyes are composed as follows in terms of mass percentage: 1-3% citric acid, 2-4% sodium trichloroacetate, 3.5-5% thickening powder, photosensitive silicone modified acrylate 20-23% of derivative-like binder, 14-27% of covering agent, and deionized water as the balance. The invention obtains anti-print printing effect through physical shielding effect, utilizes organic silicon-modified acrylic adhesive that can form film rapidly at low temperature and has no adsorption effect on reactive dyes, and has the ability to prevent the diffusion of reactive dyes and greatly Mix zinc white powder to dilute and cover the color of reactive dyes, add acid printing paste to thicken.

Description

technical field [0001] The invention belongs to the technical field of textile printing and dyeing, and in particular relates to an anti-white pulp used for physical anti-printing of reactive dyes and a preparation method thereof. Background technique [0002] Reactive dye anti-printing is an important technical means to enrich product types in the printing field and obtain various styles and patterns. The anti-printing of reactive dyes realizes the printing of fine flower-shaped outlines, which plays an important role in the visual perception and style diversity of printing. [0003] At present, the anti-printing of reactive dyes mainly uses organic acids and sodium sulfite as anti-printing agents, and achieves the anti-printing effect through chemical methods. Reactive dyes can only react with fibers to form strong chemical bonds under alkaline conditions (pH=8~11). Commonly used organic acids, such as citric acid, tartaric acid and other weakly acidic substances, destroy...

AI Technical Summary

Problems solved by technology

But because the acid will damage the natural fiber, the amount of organic acid should not be too high. At the same time, the reactive dye can be absorbed by the fiber, even if it does not react with the fiber, it will have a certain dyeing effect, which makes this method easy to cause anti-printing dirt and affect the quality of printing. accuracy

Sodium sulfite is currently a commonly used chemical auxiliary for offset printing. Sodium sulfite can react with vinyl sulfone active groups first, and its reaction rate is faster than the reaction between fibers and vinyl sulfone active groups, so that it can no longer be combined with fibers, but its The anti-printing effect is relatively large, and it mainly has anti-printing effect on reactive dyes with vinyl sulfone reactive groups, and there is also the defect that the anti-printing effect on Cui Lan in vinyl sulfone reactive dyes is poor

At the same time, chemical reagent printing reactive dyes will also appear the phenomenon of edge halo

In addition to the above problems, the resist paste prepared with organic acid and sodium sulfite cannot be stored for a long time in the production environment, it is easy to decompose and fail, and it also causes great pollution to the environment

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