Refining agent for continuous dyeing

Abstract

The invention discloses a refining agent for continuous dyeing. The refining agent for continuous dyeing comprises, by mass, 5-20 parts of seconary alkane sulphonate sodium, 10-40 parts of (heterogeneous) fatty alcohol-polyoxyethylene ether, 5-10 parts of heterogeneous fatty alcohol polyoxyethylene, 5-10 parts of chelation dispersing agent, 1-5 parts of caustic soda and 15-74 parts of deionized water. The refining agent has the excellent in low-temperature flowing performance, is not frozen when the refining agent is stored in frost weather even if the solid content is high, extremely high infiltration capacity and extremely suitable for continuous tie drying, and high production efficiency can be achieved; meanwhile, the refining agent for continuous dyeing is low in foam content and has the foam inhibition capacity to a certain extent, and the risk that oil spots appear when additive silicon or oil antifoaming agents are used in the poor water quality environment is avoided.

Description

technical field [0001] The invention relates to a refining agent for long-vehicle printing and dyeing, which belongs to the technical field of printing and dyeing chemicals. Background technique [0002] Scouring is a very important step in the process of fabric printing and dyeing. Its function is to remove natural impurities of fibers (such as cottonseed hulls, waxes, pectin substances, nitrogenous substances and pigments, etc.) and residual pulp and oil. Make the fabric have good appearance and water absorption, which is beneficial to the subsequent dyeing and finishing process. [0003] In the printing and dyeing process of woven fabrics, the long-car continuous impregnation process is generally adopted, which has high production efficiency and low wastewater discharge. The composition of the pretreatment working fluid is generally: caustic soda, hydrogen peroxide, oxygen bleaching stabilizer, refining agent. Caustic soda provides the alkalinity needed for the hydrolys...

AI Technical Summary

Problems solved by technology

[0005] At present, the penetration ability of commercially available refining agents is not satisfactory, especially the dynamic surface tension. When the gray cloth passes through the rolling machine quickly from the feed liquid, the amount of liquid carried is often not enough, and the ability to penetrate into the cloth core is also poor. It affects the subsequent refining process. In actual production, it is often solved by reducing the speed of the vehicle, or by two immersion and two tying, which affects production efficiency to a certain extent.

In addition, in the long car process, various emulsifiers will generate a large amount of foam in the feed liquid. With the continuous dipping of the gray cloth in the feed liquid, the feed liquid will be continuously rolled and oscillated, and the foam will become higher and higher. One is that it will affect the on-site personnel's judgment on the liquid level of the material liquid tank, and the other is that too much foam will form foam spots on the cloth surface, which will affect the quality of the processed cloth

Therefore, commercially available refining agents generally add defoamers, which are generally silicone and mineral oil emulsions. These two types of defoamers have obvious antifoaming effects and are widely used, but there are It is a big hidden danger. The material liquid before printing and dyeing is generally high alkalinity. In the case of high alkalinity, the stability of silicone and mineral oil is a big problem. In addition, the water used for printing and dyeing is generally ground water or river water. The water quality is poor, the water hardness is high, and the content of heavy metal ions is high, which will also affect the stability of the defoamer. Once the defoamer breaks, the silicone oil and mineral oil will stick to the cloth and form oil spots. Difficult to clean, affecting the quality of processed cloth

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