Polyester-based Thermoplastic Polyurethane

Product Description:
IROSTIC® S 6514 is a polyester-based, linear, aromatic Thermoplastic Polyurethane (TPU) for solvent-based adhesives. Key features are low crystallization rate, good heat resistance, good hydrolysis resistance, good green strength, very long open time, good solubility in many solvents including Methyl Ethyl Ketone (MEK), Acetone, Ethyl Acetate, Methylene Chloride, MEK/Toluene (8:2) and MEK/Ethyl Acetate (1:1).
Automotive industry, furniture industry and textile industry.


30.11.21 FW published 18.11.21FW create TDS
Properties Key NORM Value Unit
Solution viscosity range - 05 V1 Huntsman 400 - 600 mPa*s
Density ISO 1183-1 1,20 g/cm³
Minimum activation temperature Huntsman 50 - 55 °C
Type of use 2 component
  • V1 = viscosity (Brookfield RVT) at 20°C for 15% solid in MEK.


Processing Parameters

IROSTIC® S 6514 is designed to be used as additive in combination with other IROSTIC grades to reduce the activation temperature and to prolong the open time. 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 50 - 55°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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