In the process of the continuous development of polyurethanes, polyesters, etc. towards higher performance and multi-functionality, functional intermediates with both reactive properties and excellent characteristics of organosilicon are becoming the key to achieving breakthroughs in material performance. The product 5865H of our company, a dual-terminal alcohol hydroxyl long-chain alkyl silicone oil, as an organosilicon oligomer with dual hydroxyl functional groups, demonstrates significant industrial application value in the synthesis of silicone-modified polyurethane resins and emulsions, organosilicon-modified polyester resins, and two-component varnishes, providing efficient modification solutions for the development of high-performance resin materials.


I. Core Structural Characteristics and Physical Properties of the Product


Product 5865H of dual-terminal alcohol hydroxyl long-chain alkyl silicone oil is a colorless to slightly yellow transparent liquid with an average molecular weight of approximately 4000, and a hydroxyl content of 0.8%. Its viscosity at 25 degrees Celsius is 1500 to 2500 centistokes, and the solid content is not less than 98.00%. The molecular structure of this product has precise design features. At both ends of the molecule, there is an alcohol hydroxyl functional group, making it a typical dual-terminal reactive organosilicon oligomer. This structure endows it with similar reaction activity to polyester diols and polyether diols, enabling efficient copolymerization with isocyanate groups, carboxyl groups, etc. The high solid content ensures the sufficiency of the effective components in the product, providing better cost-effectiveness in application.


II. Core Reaction Characteristics and Functional Advantages


The core application value of product 5865H of dual-terminal alcohol hydroxyl long-chain alkyl silicone oil stems from its high reactivity with the resin system. This method of introducing organic silicon segments through chemical bonds fundamentally avoids the common problems of poor compatibility and migration in physical blending, endowing the modified materials with long-lasting and stable performance improvements. The introduced organic silicon segments give the resin or coating various performance enhancements: Firstly, significantly improving the high wear resistance of the resin or coating, extending the product's service life; Secondly, providing a good hand feel and smoothness, enhancing the final product's touch experience; Thirdly, providing good anti-stick, anti-fouling, and anti-drawing properties, forming a special protective layer on the material surface, effectively preventing dust and stains from adhering, and reducing the damage caused by graffiti to the surface; Fourthly, this product has good compatibility with various resins, and its low surface tension characteristic can promote leveling and flow, helping to form a more uniform and flat surface in the production of coatings and coatings.


III. Wide Application Areas and Usage Methods


Product 5865H of dual-terminal alcohol hydroxyl long-chain alkyl silicone oil can play an important role in the following key application areas due to its similar reactivity to polyester diols and polyether diols:


1. Synthesis of organosilicon-modified polyurethane resins and emulsions. In the polyurethane synthesis process, this product can be added as a co-polymer monomer simultaneously with the polyol monomer or added at the later stage of synthesis, and undergoes copolymerization with isocyanates. For example, it is generally copolymerized with MDI, TDI at 85 degrees Celsius, and with IPDI at around 110 degrees Celsius. The silicone-modified polyurethane resins synthesized by this route have wide applications in coatings, adhesives, elastomers, etc.


2. Preparation of organosilicon-modified polyester resins. This product can undergo copolymerization with carboxyl groups, introducing the organic silicon segments into the polyester main chain, improving the flexibility and surface properties of the polyester resin.


3. Modification of two-component PU varnishes and amino varnishes. In the two-component PU or amino varnish system, this product can be directly added to the main resin and dispersed evenly, effectively reducing the surface tension of the paint film, improving the leveling and glossiness, and simultaneously enhancing the hardness, wear resistance, and anti-fouling performance of the paint film.


4. Packaging Specifications and Storage Conditions


Product 5865H, a dual-terminal alcohol hydroxyl long-chain alkyl silicone oil, is packaged in 25-kilogram plastic drums or 200-kilogram iron drums and is placed in clean and dry containers. It is stored in a well-ventilated and dry warehouse. This product is transported as a non-hazardous item and has a shelf life of one year under the conditions of proper storage and without being opened.


V. Quality Assurance and Industrial Chain Value


During the production process of this product, a strict quality control system has been established. Key indicators such as product appearance, hydroxyl content, average molecular weight, viscosity, and solid content are tested throughout the process to ensure consistency and reliability between batches.


As the demand for high-performance and multi-functional resin materials in industries such as coatings, adhesives, and elastomers continues to grow, this product, with its dual-terminal alcohol hydroxyl group providing high reactivity and the multi-dimensional performance enhancement brought by the organic silicon chain segments, as well as its stable quality performance, is becoming an important raw material option for the modification of polyurethane and polyester resins in the field of polyurethane and polyester resin modification. It provides strong raw material support for promoting product innovation and technological upgrading in related industries.