Bis[3-(triethoxysilyl)propyl]tetrasulfide

Product Overview

Bis[3-(triethoxysilyl)propyl]tetrasulfide, commonly known as TESPT or Si69, is a high-performance silane coupling agent specifically engineered for the rubber industry. This advanced organosilicon compound serves as a critical bridge between inorganic fillers, such as silica, and organic rubber polymers. By facilitating strong chemical bonding at the interface, it significantly enhances the mechanical properties and dynamic performance of reinforced rubber compounds.

Our premium grade material is synthesized under strict quality control standards to ensure consistent purity and reactivity. It is widely recognized as the industry standard for green tire manufacturing, where it plays a pivotal role in balancing rolling resistance, wet grip, and abrasion resistance. The unique tetrasulfide linkage allows it to act as both a coupling agent and a vulcanizing agent, optimizing the compounding process.

Key Performance Benefits

• Superior Silica Dispersion: Promotes uniform distribution of silica within the rubber matrix, reducing agglomeration.
• Enhanced Dynamic Properties: Lowers hysteresis, leading to reduced rolling resistance and improved fuel efficiency in tires.
• Improved Wet Grip: Increases traction on wet surfaces, enhancing vehicle safety.
• Processing Safety: Offers excellent scorch safety during mixing and vulcanization processes.
• Crosslinking Efficiency: The tetrasulfide structure provides active sulfur for efficient vulcanization.

Technical Specifications

Industrial Applications

This coupling agent is primarily utilized in the production of high-performance radial tires, particularly for passenger cars and commercial vehicles. It is essential for silica-reinforced tread compounds where low rolling resistance is required without compromising traction. Beyond the tire industry, it is also applied in mechanical rubber goods, footwear soles, and silicone rubber products where improved filler-rubber interaction is desired. From an environmental perspective, the use of this silane contributes to the development of eco-friendly tires. By reducing rolling resistance, vehicles consume less fuel, thereby lowering carbon emissions. This aligns with global sustainability goals and regulatory standards for energy efficiency in the automotive sector.

Storage and Handling

To maintain optimal quality, store this product in a cool, ventilated area away from direct sunlight and moisture. The material should be kept in tightly sealed containers to prevent hydrolysis of the ethoxy groups. Standard industrial safety protocols should be followed during handling, including the use of appropriate personal protective equipment. We offer flexible packaging options, including 200 kg drums, tailored to meet specific logistical requirements. Quality assurance is paramount in our production facility. Each batch undergoes rigorous testing using gas chromatography and other analytical methods to verify purity and composition. We provide comprehensive Certificates of Analysis (COA) with every shipment, ensuring transparency and reliability for our clients.

Why Choose Our Product

Partnering with us ensures access to top-tier chemical solutions backed by decades of industry expertise. Our commitment to quality, consistency, and customer support sets us apart in the competitive specialty chemicals market. We invest continuously in research and development to improve our production processes and product performance. We understand the importance of reliable supply chains in the chemical industry. As a global manufacturer, we maintain substantial inventory levels to ensure timely delivery to customers worldwide. Our logistics network is optimized for hazardous materials transport, complying with all international regulations.