Silk fabric color fixing agent and preparation method thereof

Abstract

The invention discloses a silk fabric color fixing agent and a preparation method thereof. The color fixing agent is prepared from the following raw materials in parts by weight: 41-49 parts of alkyl alcohol polyoxyethyl ether S, 5-13 parts of propylene dichloride, 10-18 parts of poly-dimethyl diallyl ammonium chloride, 17-25 parts of dimethyl sulfoxide, 3-7 parts of fatty alcohol-polyoxyethylene ether and 13-21 parts of dichloroacetic acid. The method comprises the steps of mixing the alkyl alcohol polyoxyethyl ether S, the dimethyl sulfoxide and the poly-dimethyl diallyl ammonium chloride, and carrying out heating and stirring treatment; adding a fatty alcohol-polyoxyethylene ether solution, and carrying out heating and stirring treatment; adding the propylene dichloride, and carrying out heating and stirring treatment; and dropwise adding a dichloroacetic acid solution, carrying out heating and stirring treatment, and cooling to a room temperature. The prepared color fixing agent has high dye fastness under the interaction of raw materials, the dry and wet rubbing fastness and the color fastness to washing can be significantly improved, a hue change is not generated during fixation of an active dye, and the silk fabric color fixing agent is free of formaldehyde, environment-friendly, free of secondary pollution and simple in production technology, is suitable for industrial production and is extremely suitable for the field of fixation of the active dye.

Description

technical field [0001] The invention relates to the technical field of dye auxiliaries, in particular to a color-fixing agent for silk fabrics and a preparation method thereof. Background technique [0002] At present, there are many reasons why the fastness of dyed fabrics cannot meet the requirements. When dyeing with direct dyes, the dyes only rely on van der Waals force, hydrogen bonds and fibers, and the binding force between dyes and fibers is small, and there are sulfur in their molecular structure. Hydrophilic groups such as acid groups and carboxyl groups, when washing, the dyes are easily soluble in water and detached from the fibers, resulting in poor fastness to wet treatment. The reactive group in the reactive dye molecule is easy to bond with the fiber by covalent bond. Theoretically speaking, the covalent bond formed by reactive dyes and fibers is quite strong, and there is no problem of color fastness. In essence, during the dyeing process, especially when ...

AI Technical Summary

Problems solved by technology

However, it is easy to change the hue when fixing the sensitive color reactive dyes such as emerald blue and brilliant blue.

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