HDI Quick dryingCovesro N3790 BA

HDI Quick drying Covesro N3790 BA



Aliphatic polyisocyanate (high functional HDI trimer).As the hardener component for lightfast, rapid-drying polyurethane coating systems.

Product Types:

  • HDI
  • PIC
  • Aliphatic polyisocyanate
  • Crosslinkers
  • Polyisocyanate
  • Hardeners
  • Polyisocyanurate
  • Isocyanate


Coatings, paints & inks:High functional, Weather resistant, Solventborne

General Characterization:

Aliphatic polyisocyanate (high functional HDI trimer).

As the hardener component for lightfast, rapid-drying polyurethane coating systems.


Technical Properties & Datasheets


Property NameTest MethodUnitValue
Equivalent weightapprox. 236
Density at 20 °CDIN EN ISO 2811g/mlapprox. 1.13
Viscosity at 25 °CDIN EN ISO 3219/A.3mPa*sapprox. 1,600
Flash pointDIN 53 213/1°Capprox. 42




Property NameTest MethodUnitValue
Monomeric HDIDIN EN ISO 10 283%< 0.23
Non-volatile content (2.2 g / 120 min / 100 °C)DIN EN ISO 3251%90 ± 1
NCO contentDIN EN ISO 11 909%17.8 ± 0.5
Color value (Hazen)DIN EN 1557≤ 40
Viscosity at 23 °CDIN EN ISO 3219/A.3mPa*s1,800 ± 500


Storage and Transportation:

STORAGE: It is recommended to store in a dry and cool area with proper ventilation.


200KG/drum Please fasten the packaging cover as soon as possible after original packaging to prevent the mixing of other substances such as moisture and other substances that may affect the performance of the product. Do not inhale dust, avoid skin and mucous membrane contact. Smoking, eating and drinking are prohibited in the workplace. After work, shower and change clothes. Store contaminated clothes separately and reuse them after washing. Maintain good hygiene practices.

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