UV-944 (CAS: 71878-19-8) is a high-molecular-weight hindered amine light stabilizer (HALS) that provides long-term protection for plastics exposed to UV radiation and thermal stress.
Unlike UV absorbers, it works by scavenging free radicals generated during photo-oxidation, making it ideal for demanding outdoor applications.
Exceptional Longevity: Protects polymers for 5+ years in harsh climates.
Synergistic Effect: Boosts performance when combined with UV absorbers (e.g., UV-326).
Low Volatility & Migration: Stable in high-temperature processing (up to 300°C).
Regulatory Compliance: Meets RoHS, REACH, and FDA (indirect food contact) standards.
|
Property |
Specification |
|
Chemical Name |
Poly[[6-(1,1,3,3-tetramethylbutyl)amino]-1,3,5-triazine-2,4-diyl][(2,2,6,6-tetramethyl-4-piperidyl)imino]-1,6-hexanediyl[(2,2,6,6-tetramethyl-4-piperidyl)imino]] |
|
Molecular Weight |
~2,000–3,000 g/mol |
|
Appearance |
White to light yellow powder |
|
Melting Point |
100–120°C |
|
Nitrogen Content |
~4.5% |
|
Solubility |
Soluble in toluene, chloroform; insoluble in water |
|
Typical Loading |
0.1–0.5% (depends on resin and application) |
|
Thermal Stability |
Stable up to 300°C (short-term processing) |
- Standard Grade: UV944-P (Powder, 25kg/drum)
- Custom Blends: Available (e.g., masterbatches for PP/PE)
- Exterior Parts: Bumpers, mirror housings, trim (resists fading and cracking).
- Under-the-Hood Components: Engine covers, cable insulation (thermal + UV resistance).
- Geomembranes: Landfill liners, pond covers.
- PVC Profiles: Window frames, fencing.
- Solar Panel Components: Backsheets, junction boxes.
- Wind Turbine Coatings: Protects against UV and weathering.
- BOPP Films: Retards degradation in transparent packaging.
Purity & Consistency: ≥99% active content (HPLC-tested), minimal batch-to-batch variation.
Global Compliance: Full documentation (COA, MSDS, TDS, REACH dossier).
Technical Support: Free formulation advice for optimal resin compatibility.
Supply Chain Security: Dual sourcing to prevent shortages.
Cost Savings: Lower Dosage Needed: 0.3% of UV-944 outperforms 0.5% of cheaper HALS (e.g., UV-622).
- Bulk shipments save 15-20% on freight
- Inventory management support
- MOQ 25 kg, bulk discounts available
- Flexible payment terms
- Global shipping by sea/air/land
- Multiple packaging options
- Stock available for quick shipment
- Just-in-time delivery options
