Disperse dye composition for disperse/reactive dye combination printing, and preparation and application thereof

Abstract

The invention relates to a disperse dye composition for disperse / reactive dye combination printing, and preparation and application thereof. The disperse dye composition comprises 2-4 of yellow dyes disclosed as a general formula (I), orange dyes disclosed as a general formula (II), blue dyes disclosed as a general formula (III) and red dyes disclosed as a general formula (IV), wherein the number of dyes disclosed as each general formula does not exceed two. The disperse dye composition is used for a disperse / reactive dye combination printing method. The disperse dye composition is suitable for disperse / reactive dye combination printing technique of terylene / cotton and terylene / viscose blend fabrics, and has the advantages of simple technological process, higher production efficiency, lower production cost and less printing wastewater; the printed fabric has the advantages of smooth cloth cover and favorable fabric style; and Compared with the traditional printing, the invention implements disperse / reactive dye one-step printing technology of terylene / cotton and terylene / viscose blend fabrics.

Description

technical field [0001] The invention belongs to the field of printing disperse dyes and their preparation and application, and in particular relates to a disperse dye composition for disperse / reactive homogeneous printing and its preparation and application. Background technique [0002] In the past ten years, the problems of energy shortage and environmental pollution have become increasingly prominent. At the same time, the competition in the international textile market has become more intense, requiring high processing efficiency and low processing costs. There are certain expansions in fabrics, dyes, processes and even auxiliaries. [0003] Natural cellulose fiber has always occupied an important position due to its advantages such as comfortable wearing, abundant resources, and strong availability. Cellulose blended fabric printing is an important development direction of printing. Dispersion / reactive printing products are bright in color, soft to the touch, and high-...

AI Technical Summary

Problems solved by technology

Due to the different dyeing properties and physical and chemical properties of cotton / polyester fabrics, the printing and dyeing finishing technology has long process flow, difficult quality control, poor printing fastness, especially poor staining fastness, large color difference, uneven dyeing, A series of problems such as difficult finishing

In terms of printing technology, the best dyeing dyes for polyester are disperse dyes, and the color fixing conditions are acidic, but under acidic conditions, reactive dyes basically do not color cotton fibers, and reactive dyes must be fixed under alkaline conditions. Under alkaline conditions, the polyester printing will be greatly affected by alkaline conditions. Under alkaline conditions, the dyeing rate of polyester is very low, and the color change is serious, which not only affects the printing fastness, but also stains the printing white ground, affecting product quality.

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