Polycaprolactone-based Thermoplastic Polyurethane

Product Description:
IROSTIC® S 6148 is a caprolactone-based, linear, aromatic Thermoplastic Polyurethane (TPU) for solvent-based adhesives. Key features are low crystallization rate, low activation temperature, excellent hydrolysis resistance, good green strength, long open time, good solubility in many solvents including Methyl Ethyl Ketone (MEK), Acetone, MEK/Toluene (8:2) and MEK/Ethyl Acetate (1:1).
Do-it-yourself adhesive, foam bonding, footwear, packaging industry, automotive industry and textile industry.


30.11.21FW published 18.11.21FW create TDS
Properties Key NORM Value Unit
Solution viscosity range - 03 V1 Huntsman 200 - 400 mPa*s
Solution viscosity range - 12 V1 Huntsman 1000 - 1400 mPa*s
Solution viscosity range - 16 V1 Huntsman 1400 - 1800 mPa*s
Solution viscosity range - 18 V1 Huntsman 1600 - 2000 mPa*s
Density ISO 1183-1 1,20 g/cm³
Minimum activation temperature Huntsman 25 - 40 °C
Type of use 1 or 2 component
  • V1 = viscosity (Brookfield RVT) at 20°C for 15% solid in MEK.


Processing Parameters

This IROSTIC grade can be used as a 2-component system in combination with our IRODUR product range.

Clean and dry parts to be bonded.

If possible, roughen the two surfaces using abrasive material.

Apply a thin layer of adhesive solution.

Dry surfaces for approx. 30 min to allow solvent evaporation.

Activate both surfaces by warming up to 25 - 40°C.

Press surfaces together for 30 seconds.

The bonding is stable after approx. 1 minute.

Full bonding strength will be reached after 24 hours.

Please note that the procedure described here is for the adhesive solution prepared with the IROSTIC.

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