Polymer reactive dye and preparation method thereof

Abstract

The invention provides a polymer reactive dye and a preparation method thereof. The polymer reactive dye is prepared through the following steps of firstly, mixing and stirring para-ester, lauramidopropyl betaine, sodium carbonate and deionized water; secondly, adding sodium nitrite and sodium alginate to be stirred; thirdly, putting the materials in ice-water bath, dropwise adding a mixture of hydrochloric acid and deionized water, and continuing the reaction after dropwise adding is completed to obtain a mixture A; fourthly, mixing and stirring polyurethane, zinc diricinoleate and N,N-dimethylformamide; fifthly, putting the materials in ice-water bath, and dropwise adding the mixture A to be stirred; sixthly, adding 2,2-dimethylolpropionic acid, sodium citrate, sodium dehydroacetate and ascorbyl palmitate to be stirred; seventhly, putting the materials in ice-water bath for standing, adding sodium chloride to be stirred, and conducting filtering to obtain precipitates; eighthly, conducting drying to obtain the polymer reactive dye. The polymer reactive dye is high in apparent color depth value K / S, good in color fixing effect, high in dry friction and wet friction color fastness level and basically free of discoloring and staining in washing.

Description

technical field [0001] The invention relates to the field of textile materials, in particular to a polymer reactive dye and a preparation method thereof. Background technique [0002] Generally, dyes are fixed on the dyed material through ionic bonds, hydrogen bonds or hydrophobic interactions, etc., but their binding force is not strong. During the process of placement, washing and dry cleaning, they migrate from a uniformly dispersed state to the surface of the material, continuously decolorizing and dying. Discoloration, and even a part will penetrate into the human body after prolonged contact with the human body. Because many dyes have potential carcinogenicity and the carcinogenicity of most organic dyes has yet to be further proved, people have to research and develop new dyes. The polymer reactive dye is combined with the fiber through a covalent bond, which essentially solves the problem of the wet fastness of the dyed fiber, but it will cause the loss of the dye d...

AI Technical Summary

Problems solved by technology

[0002] Generally, dyes are fixed on the dyed material through ionic bonds, hydrogen bonds or hydrophobic interactions, etc., but their binding force is not strong. During the process of placement, washing and dry cleaning, they migrate from a uniformly dispersed state to the surface of the material, continuously decolorizing and dying. Discoloration, and even a part penetrates into the human body after prolonged contact with the human body

Because many dyes are potentially carcinogenic and the carcinogenicity of most organic dyes has yet to be further proved, people have to research and develop new dyes

The polymer reactive dye is combined with the fiber through a covalent bond, which essentially solves the problem of the wet fastness of the dyed fiber, but it will cause the loss of the dye due to the hydrolysis of the active group during storage and use. A waste, but also caused serious pollution to the environment

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