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TDS: Polyurethane TDI (PU) [Polyether]

Make informed choices using our technical data insights.


Polyurethane TDI (PU) [Polyether]

General Information:

  • Product Name: TDI Polyether Polyurethane Elastomers
  • Classification: Thermosetting elastomer
  • Chemical Structure: Urethane links formed from the reaction between toluene diisocyanate (TDI) and polyether polyols.


Typical Properties:

  • Density: 1.10 – 1.25 g/cm³ (varies depending on formulation)
  • Tensile Strength: 15 – 50 MPa (depending on hard segment content and formulation)
  • Elongation at Break: 150 – 500%
  • Tensile Modulus: 100 – 300 MPa
  • Hardness: Typically between Shore A 60 to Shore D 60, based on the formulation
  • Service Temperature: -40 to 90°C (-40 to 194°F)
  • Water Absorption: Low to moderate, based on specific formulation
  • Chemical Resistance: Good resistance to oils, greases, and some solvents, but less resistant to strong acids and bases.

Features and Benefits:

  • Flexibility & Durability: Offers a unique balance between elasticity and toughness.
  • Good Mechanical Properties: Combine strength, flexibility, and wear resistance.
  • Abrasion Resistance: Highly resistant to wear, tearing, and weathering.
  • Hydrolytic Stability: Polyether-based systems offer better resistance to moisture and hydrolysis compared to polyester-based systems.
  • Versatility: Can be tailored to specific needs based on the formulation.



  • Industrial Rollers: Used in manufacturing and paper industries.
  • Seals & Gaskets: For machinery and automotive applications.
  • Wheels & Castors: Particularly in heavy-duty applications where resilience and wear resistance are required.
  • Sporting Goods: Including shoe soles, protective padding, and more.
  • Medical Devices: Certain grades can be used for medical applications.

Processing Methods:

  • Casting: For producing sheets or intricate elastomeric parts.
  • Injection Moulding: Suitable for complex components requiring precision.
  • Extrusion: For tubes, profiles, and continuous shapes.
  • Compression Moulding: For specific applications requiring high dimensional stability.


Environmental Impact and Recycling:

  • TDI Polyether PU elastomers are durable, reducing waste from frequent replacements.
  • Recycling remains a challenge due to the thermoset nature, but certain chemical recycling methods, like glycolysis, are explored.


Storage and Handling:

  • Store in a cool, dry place away from moisture, as moisture can trigger unintended reactions.
  • Ensure good ventilation when processing, and avoid skin and eye contact with raw materials.

Safety Information:

  • TDI is a known sensitizer and can cause respiratory and skin irritations. Always handle with care, using appropriate personal protective equipment.
  • Fully cured elastomers are generally considered safe for use, but always follow manufacturer guidelines.

Note: This technical data sheet provides a general overview and typical properties of TDI polyether PU elastomers. Specifications might differ based on the manufacturer and grade. Always refer to the manufacturer’s datasheet for specific product details.

Disclaimer: Information is presented “as is”, without warranties. Users should conduct their evaluations for specific applications.

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