What is Tinuvin 770 (Bis-TEMPO HALS)?
Tinuvin 770 is a highly effective hindered amine light stabilizer (HALS) that protects polymers from UV-induced degradation. It works by scavenging free radicals formed during photo-oxidation.
How it works
Radical scavenging mechanism — HALS regeneratively trap free radicals formed during photo-oxidation, providing long-term UV protection without being consumed.
Applications
- Polyolefin films
- Automotive parts
- Agricultural films
- Outdoor furniture
- Fiber and tape
- Injection molded parts
Advantages
- +Outstanding long-term protection
- +Works synergistically with UV absorbers
- +Low dosage required
- +Proven track record
Limitations
- −Can interact with acidic co-additives
- −May cause slight yellowing in some systems
- −Premium pricing