A kind of preparation method of fluorescent acid color-fixing agent and obtained color-fixing agent

Abstract

The invention discloses a preparation method of a novel fluorescent acidic color fixing agent and the prepared color fixing agent. During preparation, the method comprises the following steps: carrying out mixing, heating and stirring treatment on bisphenol S and a dimethylacetamide solution, then adding hexamethyldisilazane, cooling to 70 DEG C, and carrying out stirring treatment, wherein the mass ratio of the bisphenol S to hexamethyldisilazane is (25 to 35): (2 to 6), and the volume ratio of the hexamethyldisilazane to the dimethylacetamide solution is 1: (10 to 12); then adding an acrylic acid solution, and carrying out stirring treatment at the temperature of 65 DEG C, wherein the volume ratio of the hexamethyldisilazane to the acrylic acid solution is 1: (10 to 11); then dripping a glycol dimethyl ether solution, carrying out stirring treatment at the temperature of 60 DEG C, wherein the adding amount of the glycol dimethyl ether solution is 33 to 35 percent of the mass of the bisphenol S, and cooling to room temperature to obtain the novel fluorescent acidic color fixing agent. The novel fluorescent acidic color fixing agent disclosed by the invention can greatly improve the color fastness of a fluorescent dye, so as to obviously improve the color change. The preparation method is simple, and the preparation process is fast, high in controllability and high in yield, and favorable for popularization and application.

Description

technical field [0001] The invention relates to the technical field of dye auxiliaries, in particular to a method for preparing a fluorescent acid color fixing agent and the prepared color fixing agent. Background technique [0002] Fluorescent dyes for textiles are widely used. They are often used in the professional attire of traffic police and sanitation workers to play a warning role. They are also used in textiles such as sportswear, shoes and hats, which can improve the aesthetic value of textiles. Fluorescent dye refers to a substance that can emit another wavelength greater than the absorbed light wave after absorbing a certain wavelength of light. It is a functional dye that not only has the coloring characteristics of conventional dyes, but also emits fluorescence. Saturation and vividness are enhanced. Fluorescent dyes and nylon fibers are mainly combined by ionic bonds, van der Waals forces and hydrogen bonds. Due to the weak bonding force, the color fastness is...

AI Technical Summary

Problems solved by technology

Fluorescent dyes and nylon fibers are mainly combined by ionic bonds, van der Waals forces and hydrogen bonds. Due to the weak bonding force, the color fastness is poor, and it is easy to fade, which seriously affects the wearability and aesthetics of textiles.

At the same time, the structure of fluorescent dyes is relatively simple, the molecular weight is small, and it contains a large number of water-soluble groups such as sulfonic acid groups and carboxyl groups, resulting in poor wet fastness.

It is difficult to improve the color fastness by using conventional color fixing agents to act on fluorescent dyes