Dispersing Agent NNO, also known as diffusant NNO, is a highly efficient dispersant, the main component of is sodium methylene bis-naphthalene sulfonate. It is a light yellow powder with good solubility. So this product can be quickly and evenly dissolved in water of various hardness. In addition, dispersant NNO also has excellent properties such as acid resistance, alkali resistance, heat resistance, hard water resistance and inorganic salt resistance, which makes it stable in various complex environments.
Dispersant NNO has unique amphiphilicity in chemical structure, containing both hydrophilic and lipophilic groups, which enables it to effectively disperse oily substances in aqueous media and prevent the aggregation and precipitation of particles. At the same time, it can also improve the fluidity and stability of liquids, and improve the quality and use effect of products.
Dispersing Agent NNO
- Product Name: Dispersing Agent NNO
- Appearance: light brown powder
- Diffusion Rate %: 95.0 Min
- PH Value: 7~9
- Sodium Sulfate Content %: 5.0% Max
- HS Code: 3204200000
| Item | Dispersing Agent NNO |
| Diffusion rate (for standard) % | 95.0 min |
| PH value (1% aqueous solution) | 7-9 |
| Sodium Sulfate content ％ | 5 Max |
| Insoluble in water content % | 0.05 Max. |
| Content of calcium and magnesium % | 0.4 Max. |
Applications of Dispersing Agent NNO
Due to its excellent performance and wide application fields, dispersant NNO has become an indispensable and important product in the chemical industry. It can improve the dispersibility, stability and use effect of products and provide high-quality solutions for various industries. The following are its main applications.
- Dye industry. Dispersant NNO can be used as a dispersant for disperse dyes, vat dyes, reactive dyes and acid dyes, significantly improving the dispersibility and abrasiveness of dyes. By evenly dispersing dye particles, it can help dyes better penetrate into the fiber, improve dyeing effects and color fastness, and reduce dye waste and environmental pollution.
- Textile printing and dyeing. In the field of textile printing and dyeing, NNO can improve the uniformity and stability of printing and dyeing slurry, improve printing clarity and color vividness. In addition, it can also reduce problems such as color spots and stains in the printing and dyeing process, and improve product quality and production efficiency.
- Construction industry. NNO can be used as a water reducer and early strength agent. Adding dispersant NNO to cement can make cement have a good dispersion effect after impact, enhance cement strength, shorten construction period, and save cement and water. It can improve the tensile strength, impermeability, antifreeze resistance, and compressive modulus of mixed soil.
- Paints and pigments. In the manufacture of paints and pigments, dispersing agent NNO can improve the dispersibility of pigments and fillers, making paints and pigments more uniform and delicate. This helps improve the covering power and adhesion of the coating, and enhances the color saturation and durability of the pigment.
- Agricultural field. In pesticide formulations, dispersant NNO can help the active ingredients of pesticides to be evenly dispersed in water, improving the suspension and stability of pesticides. This helps pesticides to better adhere to the surface of crops, improve the prevention and control effect, and reduce the loss of pesticides and environmental pollution.
- Other fields. In addition to the above fields, dispersant NNO is also widely used in papermaking, electroplating, water treatment, carbon black dispersion and other fields. It can improve the performance and quality of various industrial products and promote the development and progress of related industries.
The preparation process of dispersant NNO includes raw material preparation, alkylation reaction, diazotization reaction, coupling reaction, product refining and testing, packaging and storage, and safe operation and protection.
(1) Raw material preparation
The raw materials for preparing dispersing agent NNO mainly include naphthalene, formaldehyde, sodium nitrite, hydrochloric acid, etc. Before preparation, the raw materials need to be strictly screened to ensure that their quality meets the production requirements.
(2) Alkylation reaction
The alkylation reaction is the first step in the preparation of NNO. Its purpose is to react naphthalene with formaldehyde to generate α-methylnaphthalene. The reaction is usually carried out under the action of a catalyst at a suitable temperature and pressure. By precisely controlling the reaction conditions and reaction time, high-yield and high-purity α-methylnaphthalene can be obtained.
(3) Diazotization reaction
After obtaining α-methylnaphthalene, a diazotization reaction is required. The reaction is carried out under low temperature conditions by adding sodium nitrite and hydrochloric acid. Diazotization reaction is one of the key steps in the preparation of dispersing NNO, and the quality and purity of its product directly affect the performance of the final product.
(4) Coupling reaction
The coupling reaction is to couple the diazotization product with another naphthalene molecule to generate the intermediate of dispersant NNO. The coupling reaction needs to be carried out under specific temperature and pH conditions to ensure the smooth progress of the reaction and the stability of the product.
(5) Product refining and testing
After obtaining the intermediate of NNO, it needs to be refined to remove impurities and unreacted raw materials. The refining process usually includes steps such as washing, drying and filtering. After the refining is completed, the product needs to be strictly tested, including tests on chemical purity, dispersion performance, stability, etc., to ensure that the product quality meets the standards.
In summary, the dispersing agent NNO has important application value in various industrial fields. It can help particles disperse evenly in liquid media and improve product quality and performance. However, we need to pay attention to reasonable proportions and operating methods during use to ensure safety and effectiveness. Of course, with the continuous advancement of science and technology and the development of industry, the application prospects of dispersant NNO will be broader.