UV absorber UV-329 (Domestic)
UV Absorber UV-329
Functional Additives| UV absorber
Basic Specifications
| Product Name | UV absorber UV-329 (Domestic) |
| English Name | UV Absorber UV-329 |
| CAS Registry Number | 3147-75-9 |
| Molecular formula | C20H25N3O |
| Molecular Weight | 323.4 |
| Product Categories | Functional Additives |
| Product Line | UV absorber |
| Appearance | white powder |
| Density | 1.10 g/cm³ |
Product Features
- Efficient UV Absorption — Effectively absorbs 270–380nm of UV light
- Untinted — White powder, ideal for colorless and light-colored products
- Low volatility — Stable processing with minimal evaporation loss
- Excellent thermal stability — stable at processing temperatures for packaging materials
- Excellent compatibility — compatible with multiple resins and easy to disperse.
Application Areas
Styrene-basedEngineering PlasticsPolyolefinsPVCEpoxy resinPolypropylene fiber
App Data
| Applicable Systems | Recommendation | Behavior Description |
|---|---|---|
| PS / ABS / SAN | ✅ Recommended | Usage: 0.1–0.5% |
| PC | ✅ Recommended | Top choice for transparent products |
| PMMA | ✅ Recommended | Suitable for light-colored items |
| PET / Polyester | ✅ Recommended | Usage: 0.1–0.5% |
| PE / PP | ✅ Recommended | Thin products 0.1–0.5% |
| PVC | ✅ Recommended | Thick products 0.05–0.2% |
| EVA | ✅ Recommended | Good compatibility |
| Epoxy resin | ✅ Recommended | Electronic packaging valid |
| Usage Notes | ⚠️ Use with Caution | Add 0.1–0.5% for thin products and 0.05–0.2% for thick products. For enhanced synergistic protection, use in combination with HALS (hindered amine light stabilizers). |
Notes
- Please test with a sample first to confirm the optimal dosage and heat resistance conditions.
- The powder color chart may differ from the final product color. Please refer to the actual colored result.
- Evaluate weather resistance for long-term outdoor exposure.
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