HALS 622 (Hindered Amine Light Stabilizer)
CAS Number: 65447-77-0
HALS 622 (poly[(6-morpholino-s-triazin-2,4-diyl)[2,2,6,6-tetramethyl-4-piperidyl)imino]hexamethylene]) is a high-molecular-weight oligomeric HALS providing outstanding long-term light stabilization for polyolefins, polyurethanes, and other polymers exposed to outdoor environments. Its low volatility and excellent permanence make it the preferred light stabilizer for thick-section agricultural film, geomembranes, and automotive parts. HALS 622 is effective even in the presence of acid-generating flame retardants.
Technical Specifications
| appearance | White to off-white powder |
| loss on drying (%) | ≤0.5 |
| melting point (°C) | 130–145 |
| nitrogen content (%) | 9.0–11.0 |
| molecular weight (g/mol) | 2500–3500 |
Applications
- Agricultural polyolefin films
- Geomembranes and geotextiles
- Automotive exterior plastic parts
- Polyolefin roofing membranes
- Outdoor molded polyolefin articles
Key Features
- Outstanding long-term outdoor light stability
- High molecular weight for low volatility and permanence
- Effective with acid-generating flame retardants
- Excellent synergy with UV absorbers (327, 328)
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CAS Number
65447-77-0
Category
Plastic / Rubber AdditivesAvailability
In StockSample
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