| Chemical full name | N,N-Bis(2-hydroxyethyl)-2-aminoethanesulfonic acid sodium salt |
| Chemical abbreviation | BES Sodium Salt |
| CAS number | |
| Molecular formula | C6H14NNaO5S |
| Molecular weight | 235.23 |
| Product appearance | White powder or white crystalline powder |
Waterborne polyurethane uses water as a dispersing medium to form a stable binary colloidal system, which is a polymer material that conforms to the concept of sustainable development. Compared with traditional solvent based polyurethane, it has outstanding characteristics such as no pollution, high safety, excellent mechanical properties, good compatibility, and easy modification. This type of material has gradually replaced organic solvent systems in fields such as leather coating, fabric bonding, and shoe bonding, demonstrating broad application prospects.
BES sodium salt
BES Sodium Salt: Efficient Selection for Hydrophilic Modification
The BES sodium salt molecule contains hydrophilic groups and exhibits excellent water solubility. Its buffering range is between 6.6-8.0, and it is not easily chelated with metal ions. These characteristics enable it to serve as a hydrophilic chain extender and play a crucial role in the synthesis of waterborne polyurethane. By introducing it into polymer chains, the overall hydrophilicity and dispersion stability of the material can be significantly enhanced, thereby optimizing the overall performance of the final product.
Modification advantage: dual improvement in performance and process
Waterborne polyurethane modified with BES sodium salt is usually prepared by adding and dispersing oligomeric diols, diisocyanates, and small molecule chain extenders as the main raw materials in water. During this process, BES sodium salt acts as a sulfonic acid type anionic chain extender, directly participating in the construction of polymer networks and endowing the material with good water dispersibility. The obtained product not only maintains excellent mechanical properties and cold resistance, but also has the characteristics of non-toxic and environmentally friendly, making it very suitable for industrial scenarios that require both safety and performance.
Chain extender type: why BES sodium salt is more applicable
In the synthesis system of waterborne polyurethane, the selection of hydrophilic chain extenders directly affects the dispersion liquid-solid content, viscosity, and process controllability. Common anionic chain extenders include carboxylic acid type and sulfonic acid type, among which carboxylic acid type can easily lead to high system viscosity and limited solid content; Although some sulfonates help to increase the solid content, their active groups may limit the range of use of diisocyanates and affect the flexibility of synthesis.
As a sulfonic acid salt chain extender, BES sodium salt achieves a good balance between the two. It can support the preparation of high solid content waterborne polyurethane dispersions and make the synthesis process easier to control, avoiding process limitations caused by excessive activity of chain extenders. This feature provides a reliable technological path for large-scale production.
Summary
The functional leap of BES sodium salt from biological buffering agents to polymer material modifiers reflects the innovative potential of interdisciplinary integration. In water-based polyurethane systems, it contributes to the development of higher performance and more environmentally friendly coatings and bonding materials through its excellent hydrophilic modification and process adaptability. With the continuous optimization of related synthesis processes, the application depth and breadth of BES sodium salt in this field are expected to be further expanded, injecting new vitality into the green transformation of the materials industry.
Product packaging
Hubei Xindesheng Materials Co., Ltd. is a direct manufacturer of BES sodium salt, with professional technical personnel and advanced production equipment. It has advantages in technical synthesis and can provide customers with technical support and good after-sales service at any time. At present, in addition to producing BES sodium salt, Desheng also sells conventional biological buffering agents such as TRIS, BICINE, HEPES, TAPS, MOPS, etc. If you are interested, please click on the official website to learn more details!