BES Sodium Salt 66992-27-6 Can Be Used In The Synthesis Of Waterborne Polyurethane Coatings

Basic characteristics of BES sodium salt

BES sodium salt, with the chemical formula C6H14NNaO5S, is a high-purity and highly water-soluble compound. As a biological buffering agent, it has been widely used in biochemical and molecular biology experiments, and can maintain a stable pH value under different experimental conditions, thereby ensuring the smooth progress of biochemical reactions. This characteristic has also demonstrated unique advantages for BES sodium salt in the coating industry. Its acid-base form does not chelate with certain metal ions, ensuring the stability of the coating during preparation and use.

BES sodium salt powder

Application mechanism of BES sodium salt in the synthesis of waterborne polyurethane coatings

Waterborne polyurethane coating is a binary colloidal system formed by dissolving or dispersing polyurethane resin in water, which has the advantages of no pollution, safety and reliability, excellent mechanical properties, good compatibility, and easy modification. In the synthesis process of waterborne polyurethane coatings, BES sodium salt acts as a hydrophilic chain extender, which significantly enhances the hydrophilicity of the material by combining its unique hydrophilic groups with polymer materials.

Specifically, BES sodium salt is reacted with diisocyanates, oligomeric diols, and other raw materials to prepare end NCO polyurethane prepolymers. Then, under the action of emulsifier and high shear force, these prepolymers were emulsified and dispersed in water to form a stable waterborne polyurethane lotion. In this process, the hydrophilic group of BES sodium salt plays a key role, which not only improves the dispersion and stability of polyurethane lotion, but also endows the coating with good film-forming property and water resistance.

Practical application advantages of BES sodium salt in waterborne polyurethane coatings

1. Environmental friendliness: As water-based polyurethane coatings use water as the solvent, compared to traditional solvent based coatings, the use and emissions of organic solvents are greatly reduced, which meets the current environmental protection requirements for sustainable development. BES sodium salt, as a key component, further enhances the environmental performance of the coating.

2. Excellent performance: The water-based polyurethane coating modified with BES sodium salt has excellent mechanical properties, cold resistance, and non toxicity. These characteristics have enabled coatings to be widely used in leather, fabric, footwear and other fields, gradually replacing solvent based polyurethane coatings.

3. Easy to modify: The hydrophilic groups of BES sodium salt provide abundant possibilities for coating modification. By adjusting the dosage and type of BES sodium salt, the hydrophilicity, hardness, and elasticity of the coating can be flexibly adjusted to meet the application needs of different fields.

4. Simple process: The application of BES sodium salt in the synthesis of waterborne polyurethane coatings simplifies the preparation process. Its excellent stability makes the preparation process of coatings more efficient and controllable, reducing production costs and energy consumption.

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