Post-mercerizing composite reactive dye and its dyeing method and application

Abstract

The invention relates to the field of dyes, and particularly relates to a post-mercerized composite activated dye as well as a dyeing method and use thereof. A post-mercerized composite activated dye composition comprises at least two of dyes shown in formulas (1) to (7). The method for dyeing the post-mercerized composite activated dye composition comprises the following steps: firstly, dyeing and then carrying out mercerization. The post-mercerized composite activated dye composition is applied to dyeing of a cellulosic fiber or a fiber containing the cellulosic fiber. The post-mercerized composite activated dye provided by the invention can achieve spinning after dyeing, so that the dyed cloth specimen can keep bright appearance and full color and luster of the fabric, the yarn becomes tight, high in elasticity and full in handle, the fabric can emit a natural silk luster, and the shrinkage rate, the size stability, the fabric smoothness strength, the extensibility and the like also can be improved. Thus, beautiful appearance and high quality of the fabric are greatly improved.

Description

technical field [0001] The invention relates to the field of dyes, in particular to a post-mercerizing composite reactive dye and its dyeing method and application. Background technique [0002] In the dyeing of cellulose fibers using reactive dyes, it is known to use yellow, red, and blue reactive dyes as dyes for three primary colors, and to blend them in various ratios to perform dyeing. When conventional reactive dyes are used to dye fabrics, they are generally spun first, and then dyed after a series of post-treatments. Because when most reactive dyes are used to dye fabrics, if they are dyed first and then spun, they will lose color, stain, color difference, and stain when performing post-processing such as mercerizing on the fabric sample, resulting in greater color change of the original fabric sample. When most cellulose fibers are dyed with reactive dyes, they are spun first and then dyed. One of the most important post-processing "mercerizing" is treated before d...

AI Technical Summary

Problems solved by technology

Putting mercerizing treatment after dyeing, the dyes on the market can also achieve better results when dyeing light colors, but basically all dyed dark products, especially black series products, cannot be mercerized after dyeing

In order to solve this problem, various studies have been carried out in many patent documents, but satisfactory results have not yet been obtained.

Images