When delving into the world of polyurethane (PU) foam production, understanding the nuances of Toluene Diisocyanate (TDI) is crucial for achieving desired product characteristics. As a manufacturer and supplier, we frequently encounter questions about the impact of different TDI isomer ratios on the final foam. The most common ratios you'll encounter are TDI 80/20 and TDI 65/35, each lending specific properties to the flexible polyurethane foam it helps create.

TDI 80/20, a mixture where 2,4-TDI and 2,6-TDI are present in an 80:20 mass ratio, is the workhorse for producing general-purpose flexible polyurethane foam. This ratio is favored for its ability to yield foams with excellent elasticity, good density, and superior comfort. This makes it an ideal choice for applications like furniture cushioning, mattresses, and automotive seating. If you are looking to buy flexible foam raw materials that offer a balance of performance and cost-effectiveness, TDI 80/20 from a reliable manufacturer in China is often the best starting point.

On the other hand, TDI 65/35, with a higher proportion of the 2,6-isomer, is typically used for high-load flexible foams. These foams are designed to withstand greater stress and compression, making them suitable for applications requiring enhanced load-bearing capabilities, such as high-resilience foam or certain industrial cushioning. While less common for general flexible foam, understanding its specific benefits can be key for specialized formulations.

It's important to note that while TDI was historically used in rigid polyurethane foam, its high NCO content and exothermic reaction made it less suitable. Modern production often favors MDI for rigid foams. For flexible foam applications, however, TDI remains indispensable. Its chemical structure allows for the creation of foams that are not only comfortable but also durable and responsive.

As a leading supplier of Toluene Diisocyanate, we are dedicated to providing consistent, high-purity TDI to meet the diverse needs of our clients. Whether you are a large-scale furniture manufacturer or a specialized automotive component producer, we can support your production requirements. We understand the importance of reliable raw material sourcing and are committed to offering competitive pricing and expert technical support. If you are seeking to purchase TDI for your flexible foam needs, consider the specific properties conferred by the isomer ratio. We invite you to contact us to discuss your project and explore how our high-quality TDI can enhance your product performance. Buying TDI in bulk from a trusted Chinese supplier ensures a stable supply chain and cost efficiency.