IROSTIC® S 7730

Polyester-based Thermoplastic Polyurethane

Product Description:

IROSTIC® S 7730 is a polyester-based, linear, aromatic Thermoplastic Polyurethane (TPU) for solvent-based adhesives. Key features are fast crystallization rate, good heat resistance, excellent green strength, short open time, good solubility in many solvents including Methyl Ethyl Ketone (MEK), Acetone, MEK/Toluene (8:2) and MEK/Ethyl Acetate (1:1).

MAIN APPLICATIONS:

Do-it-yourself adhesive, footwear, automotive industry and textile industry.

Details

30.11.21 FW published 18.11.21FW created TDS

DIN / ISO

Properties	Key	NORM	Value	Unit
Solution viscosity range - 05	V1	Huntsman	400 - 600	mPa*s
Solution viscosity range - 12	V1	Huntsman	1000 - 1400	mPa*s
Solution viscosity range - 14	V1	Huntsman	1200 - 1600	mPa*s
Solution viscosity range - 16	V1	Huntsman	1400 - 1800	mPa*s
Solution viscosity range - 19	V1	Huntsman	1700 - 2100	mPa*s
Solution viscosity range - 22	V1	Huntsman	2000 - 2400	mPa*s
Solution viscosity range - 25	V1	Huntsman	2200 - 2800	mPa*s
Density		ISO 1183-1	1,20	g/cm³
Minimum activation temperature		Huntsman	70 - 75	°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 70 - 75°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.

View Pdf-File