Low-temperature light-color dyeing process for wool by using cotton reactive dye

Abstract

The invention discloses a low-temperature light-color dyeing process for wool by using a cotton reactive dye. The low-temperature light-color dyeing process comprises the following steps that: step 1,high-temperature pretreatment: adding a penetration enhancer, a degreaser and sodium carbonate at room temperature, running for 10min, then heating to 70 DEG C, preserving heat for 20min, carrying out overflow washing for 15min, and draining water, wherein the penetration enhancer is ALBAFLOW FFW, and the dosage of the penetration enhancer is 0.5mL / L; the degreaser is TIMSSOCYL RC 9-C, and the dosage of the degreaser is 1mL / L; and the dosage of the sodium carbonate is 0.3-0.5g / L. According to the low-temperature light-color dyeing process disclosed by the invention, the wool is dyed by usingthe cotton reactive dye at about 60 DEG C, so that the strength damage and yellowing degree of the wool under the high-temperature dyeing condition of 98 DEG C are reduced, the influence of the colorof wool fibers on the color of the dyed fibers is reduced, the dyed color is bright and beautiful, and the color fastness after dyeing is good; and meanwhile, the reproducibility of the color can be improved, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of wool fiber dyeing, in particular to a low-temperature light-color dyeing process for wool with reactive dyes for cotton. Background technique [0002] Wool is a natural protein fiber from a structural point of view, and its molecules contain polar groups such as amino groups, carboxyl groups, and hydroxyl groups, and can be dyed with acidic, metal complexing, and reactive dyes. Wool fiber is the fiber with the strongest ability to resist sunlight and weather among natural fibers. However, external factors such as ultraviolet rays, high temperature and humidity will affect the color of wool fibers. Ultraviolet rays will destroy the disulfide bonds in wool, making cystine Oxidation, the color turns yellow; dry heat treatment of wool at 60°C has no major impact on wool. As the temperature rises, wool gradually turns yellow, and wool tends to turn yellow at high temperatures. At this time, wool raw materials ...

AI Technical Summary

Problems solved by technology

Due to the presence of wool scales, wool is generally dyed at a high temperature of 98°C. When dyeing light colors, the amount of dye used is small. In addition, the yellowing of wool at high temperatures causes the color of wool itself to have a great influence on the color after dyeing. Affected, production requires multiple repairs, poor reproducibility, and low production efficiency

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