Preparation method of active chlorine-resistant and formaldehyde-free color fixing agent, and color fixing agent prepared by method

Abstract

The invention discloses a preparation method of an active chlorine-resistant and formaldehyde-free color fixing agent, and the color fixing agent prepared by the method. The preparation method comprises the steps of mixing acrylamide with diflunisal, grinding an obtained mixture, adding a polyethylene glycol monomethyl ether solution, heating up to 68 DEG C, and carrying out stirring treatment for 75min at the temperature of 68 DEG C; after that, adding water glass and a hydrochloric acid solution into an obtained mixed solution, stirring for 33min at the temperature of 62 DEG C, then heating up to 88 DEG C, and dropwise adding n-butyl titanate; then, stirring for 80min at the temperature of 88 DEG C to obtain the color fixing agent. The formaldehyde-free color fixing agent prepared by the method is mainly used for improving the wet-treatment fastness of cellulose fibers / reactive dye-dyed materials, and is excellent in color fixation effect and very high in alkali resistance and high temperature resistance; the dyed materials treated by using the color fixing agent seldom change color, and the color fixing agent does not have a bad influence on the bright colors of reactive dyes; the fabric treated by the color fixing agent does not change color, and the color fixing agent does not affect the chlorine fastness, light fastness and colorfastness to perspiration-light of the dyed materials. The raw materials of the color fixing agent are simple and wide in source, so that the color fixing agent is low in production cost; the color fixing agent does not contain formaldehyde, thus being green and environment-friendly; the color fixing agent improves the quality of the fabric.

Description

technical field [0001] The invention relates to the technical field of printing and dyeing auxiliaries, in particular to a preparation method of an active chlorine-resistant and formaldehyde-free color fixing agent and the prepared color fixing agent. Background technique [0002] Reactive dyes are the most important dyes for cellulose fiber dyeing and printing, and also the most important type of dyes to replace banned dyes. They can not only dye light colors, but also dye dark colors, especially black. At the same time, people's requirements for the color fastness of reactive dyes are also continuously increasing. Reactive dyes and cellulose fibers are chemically combined in the form of covalent bonds. Therefore, in theory, the covalent bonds between dyes and fibers can endow dyed products with excellent dyeing fastness. But in fact, its dyed products often fade, change color or stain during testing, use, washing, and even storage. Especially the wet rubbing fastness and...

AI Technical Summary

Problems solved by technology

However, the aldehyde-containing color-fixing agent is easy to cause discoloration and rough hand feeling of the dyed product, especially the high formaldehyde content, which affects the health of the human body and does not meet the international textile requirements.

And in the process of alkaline washing, because this kind of color-fixing agent is not alkali-resistant, it will cause serious dye fading and fading, resulting in staining and staining; Light fastness

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