Technologien

Low viscosity aliphatic polyisocyanates

Hydrophobic polyisocyanates with low viscosity are suitable for the formulation of High Solid coating systems or for waterbased two-component polyurethane coatings. The quality of the final coating film with low VOC emission is largely dependent on the NCO functionality and the low viscosity of the polyisocyanate.

Our product range of low-viscosity polyisocynates shows different chemical concepts to obtain low viscosity:



Some product examples:

Product
Type
HDI Trimer
standard
HDI Trimer
low viscosity
HDI-Allophanate
HDI Trimer
a-symmetrical,
low viscosity
HDI Uretdione
HDI
Uretdione
Solid content %
100
100
100
100
100
100
Viscosity
(mPas)
3000
1200
350
700
150
90
% NCO
on solids
21.8
23.0
20.0
23.5
21.8
22.7
Equivalent weight
193
183
215
175
180
185
Global Availability
EINECS
TSCA
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
*not for Sprayapplications

The most suitable Desmodur® grade can be selected by considering the properties during processing and the properties of the finished product:


For more detailed information on applications, chemistry and performances of our low viscosity raw materials please refer to our brochure:
"New Low Viscous Polyisocyanates for VOC Compliant Systems"



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