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
- Fast water-release properties
- Contains dipropylene glycol dimethylether (DMM) co-solvent
|SOFTENING POINT||Uncured: 290°F
|VOC CONTENT||75 g/l (as supplied)
192 g/l (less water)
|SWARD HARDNESS||After 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.