Contents
Chimassorb 944 (CAS 71878-19-8) Overview
Chimassorb 944 is a high-performance hindered amine light stabilizer (HALS) primarily used for UV protection in polymer applications. This NOR HALS derivative offers exceptional durability for demanding environments.
Key Parameters
| Parameter | Specification |
|---|---|
| Chemical Name | Poly[[6-(1,1,3,3-tetramethylbutyl)amino]-1,3,5-triazine-2,4-diyl][(2,2,6,6-tetramethyl-4-piperidyl)imino]-1,6-hexanediyl[(2,2,6,6-tetramethyl-4-piperidyl)imino]] |
| Molecular Formula | C₆₈H₁₀₈N₁₀O₂ |
| Molecular Weight | 2287.6 g/mol |
| Appearance | White to yellowish powder |
| Melting Point | 115-150°C |
Performance Comparison Table
| Stabilizer Type | UV Protection | Thermal Stability | Recommended Applications |
|---|---|---|---|
| Chimassorb 944 | Excellent | Up to 300°C | Thick-section PP, automotive parts |
| Competitor A | Good | Up to 250°C | Thin films |
| Competitor B | Moderate | Up to 200°C | Low-temperature applications |
Industrial Applications
Primary Uses:
- Automotive exterior components
- Agricultural films
- Construction materials
- Outdoor furniture
Material Compatibility:
| Polymer Type | Recommended Loading | Performance Benefit |
|---|---|---|
| Polypropylene (PP) | 0.2-0.8% | 5-8x lifespan extension |
| Polyethylene (PE) | 0.3-1.0% | UV resistance enhancement |
Documented Success Cases
Case 1: Automotive Bumper Protection
Client: European automotive supplier
Challenge: Prevent color fading in dark-colored bumpers
Solution: 0.6% Chimassorb 944 addition
Result: Maintained color stability after 5 years outdoor exposure
Case 2: Greenhouse Film Optimization
Client: Asian agricultural film manufacturer
Challenge: Extend film durability in tropical climate
Solution: 0.4% Chimassorb 944 formulation
Result: Achieved 3-year service life (200% improvement)
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