⭐ What Is TDI (Toluene Diisocyanate) – T80/20?

TDI is one of the most important diisocyanate chemicals used in the production of polyurethane.
TDI 80/20 is a blend of two isomers:

• 80% 2,4-TDI
• 20% 2,6-TDI

This ratio provides optimal reactivity and processing performance in polyurethane foam and elastomer production.

TDI is globally the standard raw material especially for flexible polyurethane foam manufacturing.

🔧 What Is TDI – T80/20 Used For?

The primary function of TDI is to react with polyols to form polyurethane.

In this process, TDI provides the following functions:

✔ 1. Creates Polyurethane Foam

It provides the cellular structure required for flexible foam and cushioning materials.

✔ 2. Controls Reactivity

The 80/20 isomer ratio optimizes foam hardness, rise profile, and mechanical strength.

✔ 3. Adds Mechanical and Chemical Durability

Polyurethane produced with TDI is:

• Flexible
• Lightweight
• Compression-resistant
• With excellent recovery properties

✔ 4. Serves as a Key Binder in Adhesives and Coatings

TDI is a fundamental component in strong polyurethane-based adhesives.

🎯 Purposes of TDI – T80/20

✔ 1. Production of Flexible Polyurethane Foam

This is the largest application area. Common products include:

• Furniture cushions
• Mattress and pillow foams
• Automotive seat foams
• Packaging foams

✔ 2. Adhesive Manufacturing

Used in the production of high-strength PU adhesives such as:

• Wood adhesives
• Leather and footwear adhesives
• Industrial assembly adhesives

✔ 3. Coatings and Elastomer Production

TDI serves as a binder for various polyurethane coatings:

• Flexible coatings
• Varnishes
• Waterproofing coatings
• Elastomeric seals

✔ 4. Insulation and Spray Foam Systems

Used in certain formulations for PU spray systems.

🏭 Industries That Use TDI – T80/20

• Furniture Industry (foam)
• Automotive Industry (seat and interior foams)
• Footwear & Leather Industry
• Packaging Sector
• Construction (coatings, PU systems)
• Adhesive manufacturers
• Textile coating applications

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