UV Absorber
2-(2H-Benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol (UV-234) is a high-performance benzotriazole UV absorber with strong absorption across the 300–400 nm range and outstanding thermal stability for high-bake coating systems and engineering thermoplastics. It delivers long-term protection against UV-induced yellowing, chalking, and loss of mechanical properties. Highly compatible with polycarbonate, polyester, and acrylic resin systems.
Технические характеристики
| purity | ≥ 99% |
| appearance | Off-white to pale yellow powder |
| melting point | 140 – 145°C |
| loss on drying | ≤ 0.5% |
| light absorption lambda max | 342 nm |
Области применения
- Engineering thermoplastics (PC, PET, PMMA)
- High-performance automotive clearcoats
- Wood coatings and exterior varnishes
- Agricultural and industrial films
- Adhesives for outdoor applications
Особенности продукта
- Broad UV absorption from 300 to 400 nm
- Excellent heat stability — suitable for high-bake coating systems
- Low volatility ensures long-term protection under service conditions
- Good compatibility with thermoplastics and solvent-borne coatings
- Synergistic with HALS for enhanced light and weathering stability