Toluene Diisocyanate (TDI 80/20) is one of the most widely used aromatic isocyanates in the polyurethane industry. It consists of approximately 80% 2,4-Toluene Diisocyanate and 20% 2,6-Toluene Diisocyanate, providing an excellent balance of reactivity, processing performance, and cost efficiency. Because of its high reactivity with polyether polyols and polyester polyols, TDI 80/20 is an essential raw material for manufacturing flexible polyurethane foam, polyurethane elastomers, coatings, adhesives, sealants, and other polyurethane products.
As a professional supplier of polyurethane raw materials, we provide high-quality TDI 80/20 with stable quality, consistent performance, and reliable supply for customers in the furniture, automotive, construction, footwear, and industrial manufacturing sectors.
What is TDI 80/20?
TDI, or Toluene Diisocyanate, belongs to the family of aromatic diisocyanates. Commercial TDI is mainly available as TDI 80/20 and TDI 65/35, with TDI 80/20 being the most commonly used grade in global polyurethane production. The designation "80/20" refers to the isomer composition of 80% 2,4-TDI and 20% 2,6-TDI. This formulation offers excellent processing characteristics and is widely accepted by polyurethane manufacturers around the world.
TDI reacts rapidly with hydroxyl groups in polyols to form polyurethane polymers. This reaction produces materials with excellent flexibility, resilience, and mechanical performance, making TDI one of the most important polyurethane raw materials available today.
Applications of TDI 80/20
TDI 80/20 is widely used in numerous polyurethane applications across different industries.
Flexible Polyurethane Foam
Flexible polyurethane foam represents the largest application for TDI 80/20. It is widely used in mattresses, furniture cushions, pillows, automotive seating, office chairs, packaging materials, and other cushioning products requiring excellent comfort and resilience.
Polyurethane Elastomers
TDI is also used in selected cast polyurethane elastomer systems. Polyurethane elastomers manufactured with TDI provide excellent flexibility, resilience, and wear resistance for industrial applications such as rollers, wheels, seals, and mechanical components.
Coatings, Adhesives, Sealants and Elastomers (CASE)
TDI 80/20 is an important raw material for polyurethane coatings, adhesives, sealants, and elastomer systems. These products are widely used in construction, automotive manufacturing, industrial equipment, wood finishing, and protective coating applications.
Other Polyurethane Products
Additional applications include:
Synthetic leather
Footwear materials
Automotive interior components
Industrial molded products
Specialty polyurethane formulations
Key Features of TDI 80/20
TDI 80/20 offers several advantages for polyurethane manufacturing.
High chemical reactivity for efficient polyurethane production
Excellent compatibility with polyether and polyester polyols
Low viscosity for easy mixing and processing
Stable performance in continuous and molded foam production
Suitable for a wide range of polyurethane formulations
Consistent product quality for industrial manufacturing
Reliable processing for flexible foam and elastomer applications
These characteristics allow manufacturers to improve production efficiency while maintaining consistent product quality.
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