In the process of continuously upgrading synthetic materials such as polyurethane, polyester, and acrylic resins towards higher performance and functionality, introducing the unique properties of organosilicon through chemical bonds into the main chain of the resin has become a core technical path for achieving breakthroughs in material performance. Our company's product, carbon hydroxyl-modified silicone oil 28820, as a dual-functional modified silicone oil with aliphatic carbon hydroxyl groups, demonstrates significant application value in the synthesis of organosilicon-modified polyurethane copolymers and various resin modifications, providing a precise and efficient reactive modification scheme for the development of high-performance resin materials.


I. Core Structural Characteristics and Physical Properties of the Product


Product carbon hydroxyl-modified silicone oil 28820 is a colorless to slightly yellow, transparent to slightly turbid liquid with a functional group of two, a molecular weight of two thousand, a viscosity of fifty millipascal-seconds at 25 degrees Celsius, and a refractive index of 1.41. This product is a modified silicone oil with aliphatic carbon hydroxyl groups, without excess unreacted polyethers, with high purity, and can react with isocyanates to form high-quality organosilicon/polyurethane copolymers. Compared to similar products with higher molecular weights, the design of a molecular weight of two thousand maintains the flexibility and hydrophobicity of the organosilicon chain segments while providing higher density of reactive groups, making it more efficient in participating in resin copolymerization reactions, especially suitable for modification systems with specific requirements for crosslink density and hardness.


II. Core Reaction Characteristics and Performance Advantages


The application value of product carbon hydroxyl silicone oil 28820 stems from the reactive aliphatic carbon hydroxyl groups in its molecular structure. These hydroxyl groups can react with isocyanate groups, embedding the polysiloxane chain segments chemically into the polyurethane main chain or side chain to form organosilicon-modified polyurethane copolymers. Through the modification method of chemical bonding, there are no common migration and precipitation problems in physical blending, and the modification effect is stable and long-lasting.


In terms of performance, this product can provide multi-dimensional performance improvements for modified resins: significantly enhancing the softness and tear resistance of the synthesized resins, allowing the materials to maintain structural integrity under repeated bending conditions; endowing the resins with excellent lubricity and wear and scratch resistance, improving the surface durability of the products; its organosilicon chain segments give the material good hydrophobicity and self-cleaning properties, making the coating surface less prone to staining; and improving the breathability and compatibility of the resins, expanding the application space of the materials in functional coatings.


III. Main Application Areas


Product carbon hydroxyl silicone oil 28820 can play an important role in the following key application areas, specifically:


1. Synthesis of organosilicon-modified polyurethane resins and emulsions. The product can react with isocyanates to synthesize organosilicon-modified polyurethane copolymers, suitable for polyurethane coatings, adhesives, and elastomers. The modified polyurethane maintains the original mechanical properties while significantly improving surface hydrophobicity, stain resistance, and hand feel.


2. Copolymerization modification of polyester and acrylic resins. The product can participate in the copolymerization reaction of polyester and acrylic resins, introducing organosilicon chain segments into the resin main chain, giving the resin good hand feel, smoothness, and improved wear resistance and anti-sticking performance.


3. Two-component polyurethane varnish and amino varnish. The product added to the two-component polyurethane or amino varnish system can significantly improve the smoothness, anti-sticking, and surface hydrophobicity of the coating, while also giving the coating excellent hand feel and self-cleaning properties.


4. Resin modification agents with high softness requirements. This product is suitable for use as a resin modification agent with high softness requirements, enhancing the softness, tear resistance, lubricity, breathability, compatibility, wear resistance, and hydrophobicity of the synthesized resins, suitable for high-end paints, leather coating, and other fields.


IV. Packaging Specifications and Storage Conditions


Product carbon hydroxyl silicone oil 28820 is available in twenty-liter and two-hundred-liter iron drums for packaging. Other specifications can also be provided according to customer requirements. The product is stored in a dry and cool place after being sealed. It should avoid contact with acids, alkalis, and be kept away from fire sources. Under the conditions of meeting storage requirements and without being opened, the effective storage period is twenty-four months.


V. Quality Assurance and Application Value


During the production process of product carbon hydroxyl silicone oil 28820, a strict quality control system has been established. Key indicators such as product appearance, functionality, molecular weight, and viscosity are inspected throughout the process to ensure consistency and reliability between batches. With the continuous growth of the demand in industries such as polyurethane, coatings, and adhesives for high-performance modified resin materials, this product, thanks to its precise bivalent functional group reaction structure, moderate molecular weight design, and stable quality performance, is becoming an important reactive modifier option in the organic silicone modified resin field. It provides strong raw material support for promoting product innovation and technological upgrading in the downstream industries.