Views: 61 Author: Site Editor Publish Time: 2021-05-20 Origin: Site
What is Acid levelling agent and its application?
It has a certain affinity to the fiber, and it will compete with the dyestuff to dye the mat during the dyeing process, and then it will be gradually replaced by the dyestuff, playing the role of slow dyeing. Some anionic surfactants are used, such as fatty alcohol sulfates.
In the dyeing process of fiber yarn, thread or fabric, it is added to promote uniform dyeing without producing defects such as color streaks and stains.
Most leveling agents are water-soluble surfactants, according to the leveling agent's influence on the diffusion and aggregation of the dye.
Mainly divided into two types: fibrophilic level dyeing agent and dye-philic level dyeing agent.
The fibrophilic level dyeing agent has a certain affinity to the fiber. During the dyeing process, it will compete with the dye to dye the mat, and then it will be gradually replaced by the dye to slow the dyeing. Some anionic surfactants are used, such as fatty alcohol sulfates.
Dye-philic leveling agents can significantly increase the degree of dye aggregation, and the affinity for dyes is greater than that for fibers. Before dyes are dyed, leveling agents combine with dyes to form a stable aggregate, thereby reducing the dye The diffusion rate, delays the dyeing time.
With the change of conditions, the dye gradually separates from the leveling agent and combines with the fiber, but at this time, the leveling agent still has a certain affinity for the dye. For non-dyed fabrics, the dye can be pulled down from the fiber and dyed up to Where the color is light, so the dye-friendly leveling agent has the effect of slow dyeing and migration dyeing.
Substances in this category include certain non-ionic surfactants, such as polyoxyethylene ethers of fatty alcohols or alkyl phenols.
In addition, according to the types of fibers used, leveling agents can also be divided into leveling agents for natural fibers, leveling agents for nylon, leveling agents for acrylic, leveling agents for polyester, and leveling agents for blended fabrics.
Ingredients: Aromatic sulfonic acid condensate.
PH value: 6-8 (10%)
Solubility: easily soluble in water.
Suitable for dyeing with disperse dyes as a leveling agent intermediate;
Leveling agent suitable for reactive and direct dyes;
Suitable for intermediates of acid levelling agents, which can reduce color shading and eliminate horizontal stripes;
It is suitable for the removal of cationic fixing agent on the fiber after dyeing with reactive dyes and direct dyes;
Reduce or avoid the problem of color mottling during counter-dyeing;
The foaming is small and easy to clean.
It is suitable for the leveling agent for dyeing with various dyes and the removal of cationic fixing agent on the fiber after dyeing with reactive dyes and direct dyes.
When used as a solid-removing agent, the recommended dosage according to the specific process: 3 g/l Dispersant DK
1-2 ml/liter formic acid (formic acid) 85%
95°C, 20 minutes
Rinse it well, and then peel off the color.
Transport and storage
It is transported as ordinary liquid products, and the packaging is prevented from being damaged during transportation. The product shelf life is one year.