Clariant AddWorks® ATR 945 B is a low-molecular-weight hindered amine light stabilizer, specifically compatible with non-polar polymer systems. It exhibits particularly outstanding light stabilization protection for automotive PP compounds, effectively delaying UV aging of materials and ensuring the stability of product appearance and performance.
Low-molecular-weight structure with excellent diffusivity in non-polar PP polymers, enabling rapid and uniform distribution inside substrates.
High content of hindered amine active groups with outstanding light stabilization efficiency, capable of efficiently scavenging free radicals induced by UV light and blocking the aging chain reaction.
Excellent compatibility with automotive PP compounds without affecting core properties such as injection molding fluidity and mechanical strength of materials.
Good extraction resistance, not easy to lose during long-term use of automotive parts, with long-lasting and stable protection effect.
Suitable for the application requirements of automotive interior and exterior PP parts, meeting the weathering protection standards of different service environments.
Suitable for automotive interior PP compounds, such as door trim strips, seat frames, auxiliary instrument panels and other parts, preventing yellowing and embrittlement under long-term light exposure.
Compatible with automotive exterior PP modified materials, such as bumpers, wheel arches, grilles, etc., improving the anti-aging ability under outdoor exposure conditions.
Applicable to PP parts around automotive engines, providing stable protection under complex working conditions of high temperature combined with UV irradiation.
Used in automotive lightweight PP alloy materials, expanding their application scenarios in body structural parts, chassis guards and other fields.
Suitable for high-impact PP compounds for automobiles, ensuring that materials maintain excellent impact resistance while providing weathering protection.
| Characteristic | Unit | Target Value |
|---|---|---|
| Chemical Type | - | Low-molecular-weight HALS |
| Appearance | - | White crystalline powder |
| Molecular Weight | g/mol | 500–600 |
| Melting Point Range | °C | 95–105 |
| Compatibility | - | PP, TPO, Polyolefin Compounds |
| Light Stabilization Efficiency (QUV 2000h, PP) | - | ΔE ≤ 2.0 |
| Extraction Resistance (Water immersion, 1000h) | - | Retention rate ≥ 90% |
| Thermal Stability (200°C, 2h) | % | Weight loss ≤ 0.5 |
| Storage Stability | - | 24 months (sealed, dry, below 25°C) |
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