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​How To Identify Soaping Agents And Reducing Cleaning Agents?

Views: 0     Author: Site Editor     Publish Time: 2025-01-31      Origin: Site

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How to identify soaping agents and reducing cleaning agents?


Some auxiliary agent factories cater to the call for energy conservation and emission reduction today and have launched non-reducing cleaning agents for polyester fabrics: polyester-cotton and other polyester-containing blended fabrics do not need to be reduced and cleaned after dyeing. After covering with cotton, use this auxiliary agent to wash once, which saves energy and water, and significantly saves costs.



Some even boast about the performance of this auxiliary agent: it can effectively prevent the thermal migration of dyes during high-temperature setting of pure polyester and its blended fabrics, which causes staining, improves fastness, and has the effect of preventing dyes from staining again, especially for white-bottomed dark-printed fabrics.



1. It has been tested that this type of product contains peroxide, which will cause decolorization of dyed materials, causing light color and causing dye waste. Detection method: prepare the aqueous solution of this product, test it with hydrogen peroxide test paper, and it turns blue, proving that it contains strong oxidizing substances; after soaping cotton active dyes with this product, compare the changes in color light and depth of the dyed materials before and after soaping, and find that the light color after soaping is caused by the decolorization effect of oxides on active dyes.



2. It is not conducive to on-site management of production: First, after dyeing and washing in high-temperature dye vats, a large amount of water is needed to wash the disperse dyes remaining on the dye bath and fabrics before they can be taken out of the vat. After taking out of the vat, it is often not arranged to overflow the dye vat in time, and there will be a large amount of disperse dye residual liquid flowing on the ground; second, the traditional reduction cleaning under alkaline conditions of insurance powder is cancelled, and the high-temperature dye vat will be stained. The accumulation of oligomers on the wall of the vat will cause staining and color matching, because traditional reduction cleaning is also a cleaning process for the dye vat and oligomers.



3. The soap fastness and thermal migration fastness of blended fabrics may not be improved. From the several products sampled, their soap washing ability is not very good. It only relies on peroxide to oxidize and decolorize the disperse and active dyes in the dye bath at above 80°C to make the corner water clear and colorless. The actual fastness is mostly worse than the traditional process.


If you want to know more about dyeing solutions, please contact:  info@sylicglobal.com


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