Hauthane L-3790

A water-borne, UV-curable, polycarbonate-based polyurethane dispersion.

SUGGESTED USES: Hauthane L-3790 is designed for UV-cured plastic topcoat applications
where exterior weathering durability, abrasion-resistant and chemical-
resistant films are required. Potential end-use applications include
automotive plastics, kitchen cabinets and wood flooring.


  • Excellent chemical- and stain-resistance
  • Superior humidity resistance
  • Forms durable, films under ambient or force-dried conditions
  • APEO-free
  • Fast water-release properties
  • Contains dipropylene glycol dimethylether (DMM) co-solvent


L-3790 Data Sheet

Physical Properties

SOLIDS35± 1%
VISCOSITY50-500 cps
DENSITY8.8 lbs/gal
Cured: >500°F
VOC CONTENT75 g/l (as supplied)
192 g/l (less water)
SWARD HARDNESSAfter UV-curing - 64


L-3790 may be applied by spray or gravure methods. Films must be dried completely before UV energy cure. UV irradiation is required to attain optimal film properties, but un-cured coating films are durable enough for handling prior to curing.


L-3790 must be air-dried, or oven dried (temperature: 150 – 170° F; dwell time: 10 minutes) to remove water from the film prior to UV exposure. A photo-initiator must be incorporated into the coating formulation for effective curing. See starting point formulations for suggestions. Exposure guidelines: MPMA lamp – 300 watts/in 2 , 2.0 – 3.0 second dwell time.