TDI (Toluene Diisocyanate) is one of the primary raw materials used in the manufacture of flexible polyurethane foam. As the isocyanate component in polyurethane formulations, it reacts with polyether polyols in the presence of catalysts, silicone surfactants, and other additives to form polyurethane polymers.
TDI is highly valued for its excellent reactivity, producing foams with outstanding flexibility, resilience, and comfort. It is commonly used in the manufacture of slabstock foam, molded foam, high-resilience (HR) foam, and specialty polyurethane products.
Due to its reliable processing characteristics and ability to produce high-quality flexible foams, TDI is widely used by manufacturers in the furniture, bedding, automotive, and packaging industries.
Applications
TDI is commonly used in the production of:
- Flexible polyurethane foam
- Mattresses and bedding
- Furniture cushions
- Automotive seating and interior components
- Pillows
- Packaging foam
- Carpet underlay
- Molded polyurethane products
- Polyurethane adhesives, coatings, and elastomers (specialty formulations)
Key Benefits
- High reactivity for efficient polyurethane production
- Produces soft, flexible, and resilient foams
- Excellent comfort and cushioning properties
- Promotes consistent foam quality and uniform cell structure
- Compatible with a wide range of flexible polyurethane formulations
- Supports high production efficiency and reliable processing
How to Use
TDI is mixed with polyether polyols, catalysts, silicone surfactants, blowing agents, and other formulation additives under controlled processing conditions. The formulation ratio depends on the desired foam density, hardness, and performance characteristics. Always follow the recommended formulation and handling procedures.
Storage & Handling
Store in tightly sealed containers in a cool, dry, and well-ventilated area away from moisture, heat, and direct sunlight. Moisture contamination should be avoided, as it can cause unwanted reactions and affect product quality. Wear appropriate personal protective equipment (PPE), including chemical-resistant gloves, eye protection, protective clothing, and respiratory protection where necessary. Always consult the product’s Safety Data Sheet (SDS) before handling.
Typical Properties
| Property | Value |
| Chemical Name | Toluene Diisocyanate (TDI) |
| Appearance | Clear to pale yellow liquid |
| Chemical Type | Aromatic Diisocyanate |
| Common Grades | TDI 80/20, TDI 65/35 |
| Function | Isocyanate component for polyurethane production |
| Applications | Flexible polyurethane foams, adhesives, coatings, elastomers |
| Packaging | Available in drums, IBCs, and bulk supply (pack sizes may vary) |
Industries Served
- Polyurethane Foam Manufacturing
- Furniture Manufacturing
- Mattress & Bedding
- Automotive
- Packaging
- Adhesives & Sealants
- Coatings
- Industrial Manufacturing
TDI is an essential raw material in the polyurethane industry, delivering the flexibility, resilience, and durability required for high-quality polyurethane foam products. Its excellent processing performance and consistent results make it the preferred isocyanate for many flexible foam applications.
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