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Detergent Dispersant Has A High Stability, Widely Used In The Preparation Of Various Liquids Jun 14, 2017

First, the surfactant

1. Main surfactant varieties

Surfactants are the main components of the cleaning agent, usually used mainly in the following varieties.

(1) Anionic Surfactants Anionic surfactants are still widely used in detergents, while nonionic surfactants are increasing in dosage and cationic and zwitterionic surfactants are less used. This is mainly determined by the performance and cost of the surfactant

The earliest use of anionic surfactants is soap, which is more sensitive to hard water, the resulting calcium, magnesium soap will be deposited in the fabric and washing utensils on the wall affect the cleaning effect, it has been replaced by other surfactants. At present, the soap is mainly used in the powdered detergent as a soaking conditioner, because it is easy to combine with the alkaline earth metal ions,Detergent Dispersant so in combination with other surfactants can play a "sacrifice" role to ensure that other surfactants The role of full play.

Linear Alkyl Benzenesulfonic Acid Sodium (LAS) has good biodegradability due to its good water solubility, better decontamination and foaming, and is more biodegradable than tetra-polypropylene alkyl benzene sulfonate (ABS) Low,Detergent Dispersant so it is the most widely used anionic surfactant in detergent formulations.

Other commonly used anionic surfactants include secondary alkyl sulfonates (SAS), alpha-olefin sulfonates (AOS), alcohol sulphates (FAS), - sulfo fatty acid ester salts (MES), fatty acid polyoxygen Vinyl ether sulfate (AES), although it can be used alone as a detergent main ingredient, is usually used in combination with linear alkyl benzene sulfonates.

(AOS) is resistant to hard water, foam, good detergency. It is suitable for the preparation of liquid α-olefin sulfonate (AOS) , For skin irritation low cow so much for skin cleansers. Among them,Detergent Dispersant especially with carbon atoms in the 14 ~ 18 α-olefin sulfonate performance is the best.

Fatty Alcohol Sulfate (FAS) is an anionic surfactant commonly used in heavy duty detergents. It has the advantage of strong detergency. Its drawback is that it is sensitive to hard water, so it is necessary to add chelating agent to the formula.

D-sulfo fatty acid ester (MES) is made of natural raw materials such as oil and oil. It has good biodegradability and is safe to human body. It is a new variety developed in recent years. As people pay more attention to the protection of the environment, People pay attention to the two MES is a low sensitivity to hard water,Detergent Dispersant calcium soap dispersion good, excellent washing performance of the new varieties, the disadvantage is to hydrolysis, the use of appropriate to join the appropriate stabilizer.

Fatty alcohol polyoxyethylene ether sulfate (AES), both anionic nonionic surfactant characteristics, in hard water is still a good detergency, the formation of foam stability,Detergent Dispersant in the liquid state has a high stability, So widely used in the preparation of a variety of liquid detergent.

(2) Nonionic surfactants The most nonionic surfactants used in detergents are fatty alcohol polyoxyethylene ethers (AEO). It has a good decontamination capability and a dispersion of dirt at lower concentrations, and is resistant to hard water and has a unique anti-fouling and repainting effect.

The alkylphenol ethoxylates (APEO), which are often used in the past, have similar properties to fatty alcohols and polyoxyethylene ethers, but are currently being used in detergents because of their poor biodegradability.

Alcohol amide preparation of the detergent is rich and stable foam, and with other surfactants have a good synergy for the benefit of improving the detergent at low concentrations and low temperature detergency,Detergent Dispersant so often do detergent compatibility ingredients The

Amine oxide water-soluble, and LAS compatibility is good, low irritation to the skin, a good bubble stabilizing effect. The disadvantage is poor thermal stability, high prices, currently used for the preparation of liquid detergent.

Although zwitterionic surfactants have good decontamination capacity, but because of the higher prices, only in personal hygiene products and special use of detergent in a small amount of use. Cationic surfactants have poor detergency, but are soft, sterilized, and have excellent antistatic properties. Therefore, cationic surfactants and nonionic surfactants can be formulated to have both washing and softening and disinfecting dual-function detergents.

2. The use of surfactants should pay attention to the problem

(1) Surfactants are usually mixtures of different chain length homologs. Surfactants differ from other chemical products in that there is little purely single molecular structure of the surface active product, mostly mixtures of different chain length homologs 9 Preparation table,Detergent Dispersant the main raw material of surfactant from oil or oil, oil is a mixture of a variety of hydrocarbons, oil is also a variety of months of the formation of acid and glycerol ester, so the surfactant product is made of a mixture. Such as soap is actually a mixture of sodium stearate, sodium palmitate, sodium laurate, sodium oleate and a variety of fatty acids, and fatty alcohol polyoxyethylene ether is not only the raw fatty alcohol is a mixture of different carbon chain length, The amount of ethylene oxide is also different, so the product is a variety of non-justified alcohol, different ethylene oxide adduct mixture i in the proportion of various components of the mixture on the nature of the surfactant has a great impact.