Knowledge Inventory: Explanation of Home Laundry Detergent Ingredients

(1) The nominal active agent in the formula of washing powder is also called the active substance of washing powder. According to the balance between the hydrophilic group and the new oil base in its molecule, it is dissolved in water and adsorbed on the interface between the matrix (water and dirt) water. So that the interface free energy falls to achieve the process of decontamination. Its molecules have the basic structure, that is, one end of the molecule is straight chain, and the composition of the hydrocarbon chain has a great influence on its nominal activity, such as sodium alkyl sulfonate. In the aqueous solution system, various physical and chemical actions are used to remove dirt, achieve hygienic goals, improve product performance and purity, and formulate products with various formulations. Detergent formulations contain essential components - nominal actives and help components (auxiliaries, foam boosters, chelating agents, fillers, etc.). (3) Sodium carbonate is an indispensable component in the formula of ancient washing powder. In addition to its ability to reduce calcium and magnesium ions in hard water and soften the water, its other function is to make dirt and fibers fall more when the pH value increases. The negative charge, thereby increasing the repulsion between dirt and fibers, is an important component of alkaline detergents. Soda ash cannot be added to the washing powder used for washing silk, wool and man-made fibers. Only suitable for washing powder. According to the dissociation properties of the nominal active agent in the aqueous solution, it is confirmed that the anionic and nonionic nominal active agents have strong detergency, and are commonly used nominal active agents for laundry detergents. The anionic nominal active agent is mainly used in Chinese formulations, and its linear sodium alkyl benzene sulfonate accounts for about 90%. Non-ionic nominal active agent varieties are fatty alcohol polyoxyethylene ether (AEO some laundry detergent formula, the phosphate content is as high as 40% or more, which brings pollution to the environment that cannot be ignored - the eutrophic differentiation of rivers and consumption of a lot of Phosphorus resources. In recent years, some countries have ordered to prohibit or limit the use of phosphate in washing powder. China is also developing phosphorus-free or less phosphorus washing powder. (4) Sodium silicate plays an important role in washing powder, if it has a good buffering effect , softened water, has a restraining effect on stainless steel and aluminum, and promotes the formation and firmness of foam. The most used is sodium metasilicate pentahydrate, which also has a synergistic effect of decontamination with polyphosphate and other laundry detergent ingredients. Sodium carbonate is an important adjuvant of phosphorus-free laundry detergent and an important component of alkaline detergents.
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