Sodium Salt of Polynaphthalene Sulphonic Acid CAS 36290-04-7

The Sodium salt of Polynaphthalene sulphonic acid has excellent colloidal properties. It does not have any surface activity like penetrating foaming and is attracted to polyamide and proteins, but not cotton, hemp or other fibers.

Description of Sodium Salts of Polynaphthalenesulphonic Acid ：

Sodium polynaphthalene sulfonate has good water solubility and can dissolve quickly in water and form a transparent solution. This solution has a low viscosity, making it widely used as a thickener, suspension agent, etc. In addition, the molecular weight of sodium polynaphthalene sulfonate is higher, usually between tens of thousands and millions, depending on the preparation method and polymerization conditions. Due to its long molecular chain, sodium polynaphthalene sulfonate can form a three-dimensional network structure in an aqueous solution and has good thickening and suspension ability. This three-dimensional network structure can also improve the stability of polynaphthalene sulfonate salt.

Sodium polynaphthalene sulfonate also has good temperature resistance and salt resistance. Under high temperatures and high salinity environments, the stability of sodium polynaphthalene sulfonate is better, and it is not easy to decompose or condense. In addition, due to its non-ionic characteristics, the solution of sodium naphthalene sulfonate has good compatibility with other ionic polymer solutions. 

In addition to the above properties, sodium polynaphthalene sulfonate has a certain degree of biocompatibility and biodegradability. This means that microorganisms can break it down into harmless substances under certain conditions, reducing the environmental impact. 

 Technical Parameters of Polynaphthalene-Sulphonic Acid Sodium Salt:

Applications of Sodium salt of polynaphthalene sulfuric acid: 

Thickening agent and stabilizer for oil drilling fluid

In the petroleum industry, drilling fluid is a circulating fluid used in the drilling process of oil fields, which suspends drilling cuttings, protects well walls and transfers water power. As a high polymer, sodium polynaphthalene sulfonate has a good thickening and stabilizing effect, improving the suspension ability and stability of drilling fluid and preventing drilling cuttings and rock cuttings from settling on the well wall. By adding sodium polynaphthalene sulfonate, the drilling efficiency can be improved, the drilling cost can be reduced, and the oilfield environment can be protected.

Cosmetic suspension agents and thickeners

In the cosmetics industry, sodium polynaphthalene sulfonate is mainly used as a suspension agent and a thickener. By adding polynaphthalene sulfonate sodium salt, cosmetics' stability and suspension effect can be improved, and the quality and use effect of products can be improved. For example, adding sodium polynaphthalene sulfonate to shampoo can make it smoother; Adding sodium polynaphthalene sulfonate to toothpaste can make its foam richer.

Food additives

Sodium polynaphthalene sulfonate added to drinks can improve their taste and stability; adding sodium polynaphthalene sulfonate to ice cream prevents it from melting. Because sodium polynaphthalene sulfonate is non-toxic, tasteless and safe, it has been widely used in the food industry.

Paper coating thickener and stabilizer

In the paper industry, paper coatings are mixtures of pigments, adhesives, additives, etc., used to give paper a specific appearance and properties. As a thickener and stabilizer of paper coatings, sodium polynaphthalene sulfonate can improve the rheology and stability of coatings and the coating quality and efficiency. At the same time, sodium polynaphthalene sulfonate can also increase the binding force between the coating and the paper surface and improve the paper's wear and weather resistance.

Cement concrete water-reducing agent and plastic agent

In the construction industry, cement concrete is a commonly used building material. To improve cement concrete's performance, adding various admixtures is often necessary. By adding polynaphthalene sulfonate sodium salt, the shrinkage rate of cement concrete can be reduced, the cracking risk can be reduced, and the durability and stability of concrete can be improved.

Production Method of Sodium salt of polynaphthalene sulfuric acid: 

Free radical polymerization

Free radical polymerization is a common method for preparing sodium naphthalene sulfonate. The method takes naphthalene sulfonic acid as the main raw material and generates poly naphthalene sulfonic acid sodium salt by initiating a polymerization reaction. Free radical polymerization reaction conditions are mild, can be carried out at room temperature and pressure, suitable for large-scale production. However, this method requires initiators, which may introduce impurities and affect product quality.

Polycondensation

Polycondensation is another method to prepare polynaphthalene sulfonate. Using naphthalene sulfonic acid and polyformaldehyde as the main raw materials, poly naphthalene sulfonic acid sodium salt was synthesized by condensation polymerization under certain conditions. The polycondensation reaction conditions are mild, and the product has a high molecular weight, which is suitable for producing high-quality products. However, the high price of the raw materials used in this method limits its wide application.

Enzymatic polymerization

Enzyme-catalyzed polymerization is an environmentally friendly method for preparing sodium polynaphthalene sulfonate. The method uses enzyme catalysis to polymerize naphthalene sulfonic acid monomer as raw material to produce polynaphthalene sulfonic acid sodium salt. Enzyme-catalyzed polymerization has mild reaction conditions, high molecular weight and narrow distribution, which is conducive to improving product quality. In addition, enzyme-catalyzed polymerization has the advantages of high selectivity and pure product, which is conducive to green production.

Photopolymerization

Photopolymerization is a new method for preparing sodium naphthalene sulfonate. Using the action of photoinitiator and ultraviolet light, naphthalene sulfonic acid monomer was polymerized at a low temperature to produce polynaphthalene sulfonic acid sodium salt. The mild photopolymerization reaction conditions allow precise control and make it suitable for producing fine chemicals. However, this method requires photoinitiators and special light sources, and the equipment cost is high.

Packaging and Shipping of Sodium Sulfonic Acid Salt:
We offer a variety of packaging options based on Sodium Salt Polynaphthalene sulphonic Acid.
The Sodium Salt of Polynaphthalene sulphonic Acid packaging: 1kg/bottle or 25kg/barrel.
Shipping of Sodium Salts of Polynaphthalene-Sulphonic Acid Upon receipt of payment, goods can be shipped by air, sea, or express as soon a possible.

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