In the field of textile printing and finishing, block silicone oil serves as a key additive to impart soft, fluffy, and smooth handfeel to fabrics. The structure and activity of its synthetic raw materials directly determine the performance and production efficiency of the final product. Our company's product, the ESK series of dual-terminal epoxy polyether silicone oil, as a type of epoxy-terminated polyether modified silicone oil, demonstrates significant application value in conventional fabric handfeel finishing, block silicone oil synthesis, and the development of high-end environmentally friendly softeners, thanks to its high reactivity, wide range of amine-based modification agent selection, and significant reduction in solvent usage. It provides efficient, safe, and flexible raw material solutions for the textile additive industry.


1. Product Series Specifications and Core Physical and Chemical Properties


The ESK series of dual-terminal epoxy polyether silicone oil includes four models: ES7K, ES9K, ES12K, and ES20K. All are colorless or light yellow transparent liquids. At 25 degrees Celsius, the viscosity and epoxy value of each model show regular differences: ES7K has a viscosity of 200 to 300 millipascal-seconds and an epoxy value of 0.026 to 0.030 millimoles per gram; ES9K has a viscosity of 200 to 350 millipascal-seconds and an epoxy value of 0.020 to 0.024 millimoles per gram; ES12K has a viscosity of 300 to 500 millipascal-seconds and an epoxy value of 0.016 to 0.020 millimoles per gram; ES20K has a viscosity of 500 to 800 millipascal-seconds and an epoxy value of 0.010 to 0.013 millimoles per gram. This series of products contains 5% isopropanol, which helps improve the flowability of the product at low temperatures and operational convenience. From ES7K to ES20K, as the viscosity gradually increases, the epoxy value shows a gradient decrease. This regular performance distribution provides precise selection basis for formula designers for different handfeel styles and process requirements.


2. Core Performance Advantages of the Product


The ESK series of dual-terminal epoxy polyether silicone oil demonstrates the following core performance advantages when compared with ordinary epoxy silicone oil:


Suitable for conventional fabric handfeel finishing. As the core raw material for block silicone oil synthesis, the product can impart soft, fluffy, and smooth handfeel styles to cotton, polyester, nylon, and their blends through optimizing the selection of amine-based modification agents and reaction processes.


Widely adaptable amine-based modification agents. This series of epoxy polyether silicone oil can be reacted with various organic amines and polyether amines to prepare various handfeel-style block silicone oils. The range of amine-based modification agents is much larger than that of ordinary block silicone oils, providing greater performance control space and product differentiation development potential for formula designers.


High reactivity and reduced solvent usage. The high reactivity of the product can significantly reduce the usage of solvents during the reaction process, effectively reducing safety hazards in the workshop and reducing VOC emissions, which is in line with the green production trend.


High reactivity and expanded solvent selection range. For high-end usage environments, non-toxic solvents can be selected to prepare high-content block silicone oil products. The products basically have self-emulsification properties, are simple to mix, and are easy to operate.


3. Main Application Areas


The ESK series of dual-terminal epoxy polyether silicone oil can play a key role in the following textile additive application areas:


1. Conventional fabric handfeel finishing. The product is suitable for softening, fluffy, and smooth finishing of cotton, polyester, nylon, and their blends. Through reactions with different amine-based modification agents, it can prepare block silicone oil products with differentiated handfeel styles, meeting the diverse handfeel style requirements of textile factories.


2. Block silicone oil synthesis. As an active intermediate with dual-terminal epoxy groups, this series of products can react with various polyether amines and organic amines to synthesize a series of block copolymer silicone oils with different molecular weights and hydrophilic-hydrophobic balance values. This type of block silicon oil has better yellowing resistance and more excellent hydrophilicity compared to traditional amino silicon oil.


III. Development of high-end environmentally friendly softeners. The flexibility of solvent selection and basic self-emulsification properties of the product enable formulators to develop high-content block silicon oil products with low solvent content and low VOC, meeting the strict environmental and safety requirements of high-end brands.


IV. Development of functional finishing agents. Based on the multi-model selection of the ESK series products, combined with specific amine-modified agents and functional monomers, functional textile finishing agents with anti-static, easy-to-clean, moisture absorption and perspiration functions can be developed.


IV. Packaging specifications and storage and transportation conditions


The product double-ended epoxy polyether silicon oil ESK series should be stored in a cool and dark place, packaged at 950 kilograms per barrel. This product contains 5% isopropanol, and attention should be paid to ventilation during operation.


V. Quality assurance and industry application value


The product double-ended epoxy polyether silicon oil ESK series has established a strict quality control system during production. Key indicators such as product appearance, viscosity and epoxy value are inspected throughout the process to ensure consistency and reliability between batches.


As the textile printing and dyeing industry continues to upgrade towards higher quality, differentiation and greenness, the demand for block silicon oil synthesis raw materials with high reactivity, low solvent usage and environmental safety is steadily increasing. The product double-ended epoxy polyether silicon oil ESK series, with its gradient distribution of viscosity and epoxy value specifications, the process optimization advantages brought by high reactivity, and a wide range of amine-modified agent selection, is becoming an efficient raw material option for textile additive manufacturers in block silicon oil synthesis. Its formula design with isopropanol and self-emulsification characteristics further enhance the convenience and safety of product use, providing strong support for the differentiated development and green manufacturing of textile finishing agent products.