UV Stabilizer 622 (High-Molecular HALS, White Granule)
CAS 65447-77-0
In StockMOQ
25 kg
Lead Time
7–14 days
Packaging
25 kg bags
Specifications
| Chemical Type | Polymeric HALS (dimethyl succinate / 4-hydroxy-TEMPO copolymer) |
| Appearance | White granules |
| Molecular Weight | ~3100–4000 g/mol |
| Melting Range | 55–70 °C |
| Recommended Dosage | 0.5–1.5% |
| Migration Resistance | Excellent |
FAQ
Higher molecular weight reduces migration from the coating film during weathering, maintaining photostabilisation efficiency over the full service life compared to low-MW HALS which can be lost by evaporation or extraction.
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