UV-234 is a benzotriazole-based UV absorber specifically formulated for engineering plastics and coatings that require UV resistance under high processing temperatures. It delivers strong absorption in the 300–400 nm range, effectively preventing discoloration, loss of mechanical strength, and surface cracking.
This product is particularly effective for PC, PA, PET, PBT, and other technical polymers used in automotive, electronics, and optical applications.
| Property | Typical Value |
|---|---|
| Chemical Name | 2-(2H-Benzotriazol-2-yl)-4,6-di-tert-pentylphenol |
| CAS No. | 70321-86-7 |
| Appearance | Light yellow powder |
| Melting Point | 137 – 141 °C |
| UV Absorption Range | 300 – 400 nm |
| Thermal Stability | High |
| Recommended Dosage | 0.1 – 0.5 phr |
| Customer Concern | UV-234 Benefit |
|---|---|
| Additive loss in high-temp processing | Stable under high extrusion/molding conditions |
| UV discoloration in PA or PET | Prevents yellowing and maintains gloss |
| Degradation in long-term outdoor use | Long-lasting UV protection for weather exposure |
| Migration or blooming in PC/ABS | Low volatility and bleed-resistant formulation |
| Compatibility with complex formulas | Easy to blend with other stabilizers and pigments |
Q1: Can UV-234 be used in high-heat processes like injection molding?
Yes. UV-234 offers superior thermal stability and resists breakdown even at elevated temperatures.
Q2: What polymers is UV-234 best suited for?
Mainly for engineering plastics like PC, PA, PBT, PET, and PPS. Also works well in industrial coatings.
Q3: Does it impact clarity or transparency?
No. It is suitable for optical-grade polymers and provides UV protection without affecting transparency.
Q4: Can it be used in outdoor-grade automotive plastics?
Yes. It is widely used in UV stabilization of bumpers, panels, trims, and under-the-hood parts.
Q5: Is UV-234 compliant with RoHS or REACH?
Yes. Please contact us to request SDS and regulatory documentation.
