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What is the compounding technology of pretreatment additives?

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According to research, cotton wax can be removed no matter what kind of surfactant is used (generally, cationic surfactant is not used). Therefore, the compound of anionic and nonionic surfactants is generally used, and its HLB value should be considered when compounding, and it is advisable that the HLB value is close. Among them, the carbon chain of anionic surfactant is preferably C13~C16, and the carbon chain of nonionic surfactant is preferably C12~C14. For example, a scouring agent compounded by three components, ASA60 (HB value 13.0), sodium cetyl sulfonate (HLB value 12.08), and AEO-6 (HLB value 12.12), has a better application effect. it is good.


Nonionic surfactants have cloud point problems, which are limited by temperature during application and should be paid attention to when compounding. However, the cloud point can be increased after the nonionic surfactant and anionic surfactant are compounded. For example, the penetrant JFC (the cloud point is about 45℃) and the SAS60 can increase the cloud point to about 90℃.


Some surfactants have improved efficacy and synergistic effects when compounded, and the wetting and penetration of fabrics are greatly improved, even exceeding the penetrating agent JFC. When sodium tripolyphosphate is added to ABS, it can improve the wetting and cleaning effect of hydrophilic fibers when making detergents, but its effect on hydrophobic synthetic fibers is not good. At this time, ABS can be mixed with maleic acid, clothing The wetting and cleaning effect can be greatly improved after combining with polycarboxylic acid type integrating agents such as peric acid and acrylic acid, and then adding magnesium salts. Another example is that the alkali resistance of SAS60 is about 100 g/L NaOH. If it is reasonably compounded with OEP60, the alkali resistance can be increased to about 180 g/L NaOH, and it has good permeability. The ratio of 40/60 of sodium 2-alkenyl sulfonate and ABS can obviously improve the washing effect. After tea saponin is properly compounded with other surfactants, it can be made into an alkali-free shampoo, which is superior to alkaline shampoo in terms of softness, bulkiness, elasticity and fastness of clean hair. The reference formula is: tea saponin 5%~15%, AES1%~15%, APE+AEO2%~10%, additives 1%~5%.

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