UV curable hardcoats
Our selection of specialty acrylates to address extreme conditions
Why moving to UV cured hardcoats ?
Curing process advantages
- Very high productivity
- Process efficiency and flexibility
- No solvent emission
- One layer UV coated – no primer required
Excellence of final film performance
- High-end quality finish
- Very high scratch resistance
- Superior chemical resistance
- Very good exterior durability
- Adhesion to difficult substrates
Application field benefits
- Architectural panels and films
- Interior and exterior automotive parts
- Helmet visors, goggles and ophthalmic lens
- Consumer electronics
- Solar films
Our selection of oligomers
| Oligomer | F* | Attributes | Viscosity | Tg by DMA | Persoz pendulum hardness |
| CN9210 | 6 | Good hardness and abrasion resistance | 2 Pa.s @60°C | 120°C | 340 |
| CN9215 | 6 | Good hardness and abrasion resistance | 1,2 Pa.s @50°C | 40°C | 320 |
| CN9276 | 4 | Good impact and scratch resistance | 5,8 Pa.s @25°C | 90°C | 300 |
| CN9209 | 9 | High scratch resistance and fast cure | 9 Pa.s @60°C | 50°C | > 300 |
| CN2306 | 6 | High scratch resistance | 13 Pa.s @25°C | 38°C | > 300 |
F*= functionality
Exterior durability demonstration
Our choice of oligomers for improved weathering properties:
Florida (USA) exposure - some selected results:
| Selection | Functionality | Tg | Gloss retention | Delta yellow index | |
|
Test for 7,5 years |
CN9001 | 2 | 55°C | 85% | -3,1 |
| CN981 | 2 | 35°C | 97% | -2,1 | |
| CN991 | 2 | 15°C | 97,5% | -1,05 | |
| SR531 | 1 | 10°C | 100% | -0,73 | |
|
Test for 6 years |
SR595 | 2 | 90°C | 97% | -1,2 |
| SR833S | 2 | 185°C | 81% | 0,45 |
Florida (USA) exposure: Inland, facing south, 5° angle - Substrate: cold roll steel with E.coat/primer and white automotive basecoat
Solvent free clearcoat: 50% oligomers + 50% monomers + 3% TPO-L - Film thickness: 35-45 μm
Curing conditions: 4,5 J/cm2 with Heraeus lamps - bulbs V and H - under nitrogen