![UV Absorber UV-360 (2,2'-Methylenebis[6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol])](/assets/images/product-uv-360.jpg)
UV Absorbers
UV Absorber UV-360
2,2'-Methylenebis[6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol]
High-molecular bis-benzotriazole — extremely low volatility and extraction resistance.
Product Description
UV-360 is a bis-benzotriazole UV absorber of ~659 g/mol containing two absorbing chromophores per molecule for highly efficient 290–400 nm coverage. Its bulky structure gives extremely low volatility and excellent heat resistance, with a melting point near 200 °C.
Extraction resistance is markedly better than low-molecular absorbers, suiting articles exposed to washing and weathering as well as food-contact polyolefins. Chemically inert and compatible with many resins, UV-360 excels in weathering systems for high-processing-temperature polymers.
Typical loadings are 0.1–0.5 wt%, with added benefit when combined with HALS such as UV-944 or UV-119. Aolong UV-360 is ≥99.0% assay with low color contribution and full regulatory documentation.
Key Features
- Dual chromophores — high absorption efficiency
- Extremely low volatility, melting point ~196 °C
- Extraction and migration resistant
- Synergy with HALS for long-term systems
Applications
- Polyamide and PBT engineering plastics
- Polycarbonate and polyacetal
- Polyolefin fibers and tapes
- Acrylates and styrenics
- Elastomers and adhesives
Specifications
| CAS No. | 103597-45-1 |
|---|---|
| Molecular Formula | C41H50N6O2 |
| Molecular Weight | 658.89 |
| Appearance | Off-white to slightly yellow powder |
| Assay (HPLC) | ≥ 99.0% |
| Melting Point | 195 – 198 °C |
| Loss on Drying | ≤ 0.5% |
Packaging & Storage
25 kg fiber drum with PE liner or 25 kg carton. Store cool, dry and protected from light; shelf life 24 months in original sealed packaging.
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