Low-temperature dyeing assistant for wool and dyeing method

Abstract

The invention relates to a low-temperature dyeing assistant for wool and a dyeing method. The low-temperature dyeing assistant comprises, by mass, 22 to 32% of N-polyoxyethylated tallow-alkylamine, 10 to 15% of triethylene glycol monobutyl ether, 3 to 6% of ethoxyamine aliphatate derivative, 0.2 to 0.5% of polyethylene glycol, 0.5 to 1% of glacial acetic acid, 0.5 to 1% of sodium carbonate, 1 to 2.5% of hexamethylenetetramine and 1 to 2.5% of sodium sulfate. The low-temperature dyeing assistant has the functions of low-temperature colourability, level dyeing and retarding performance and dispersion and permeation performance, replaces a low-temperature dyeing assistant, a leveling agent, a dispersant and the like simultaneously used in traditional low-temperature dyeing and simplifies low-temperature dyeing process for wool.

Description

technical field [0001] The invention belongs to the technical field of dyeing auxiliaries, and in particular relates to an auxiliaries used in wool low-temperature dyeing process and a dyeing method using the auxiliaries. Background technique [0002] Wool fiber is one of the most complex natural fibers. The surface is covered with a layer of scales, which is hydrophobic, and the dye solution is not easy to wet, which hinders the adsorption and diffusion of dyes and is difficult to dye. Especially for some dyes with low affinity, the dye concentration in the residual liquid is high, and the sewage treatment is difficult. The wool dyeing temperature is high and the dyeing duration is long, resulting in high energy consumption during dyeing. Long-term boil-dyeing of wool will cause dyeing damage, the specific manifestations are as follows: (1) wool loses weight; (2) it will cause many disadvantages to post-processing such as carding, spinning and weaving, such as loose wool d...

AI Technical Summary

Problems solved by technology

Some low-temperature dyeing auxiliaries may even affect the physical and mechanical properties of the finished fabric, such as strength and handle, as well as color characteristics; or have poor compatibility with other dyes and chemicals, and the cost is high, etc.