Tinuvin 783 cas 71878-19-8 (944)+65447-77-0 (622)
Chemical Name: Tinuvin 783
Another Name: Light Stabilizer 783 /UV Stabilizer783
CAS No.: 71878-19-8(944) +65447-77-0(622)
Molecular Fomula: [C35H66N8]n(n=4-5); H[C15H25O4N]nOCH3
Molecular weight: > 2500
Appearance: Light yellow granules or white powder
Tinuvin 783 (CAS 71878-19-8 & 65447-77-0) Comprehensive User Guide
Table of Contents
1. Product Overview & Specifications
| Parameter | Tinuvin 783 | Tinuvin 770 | Chimassorb 944 |
|---|---|---|---|
| CAS Number | 71878-19-8 / 65447-77-0 | 52829-07-9 | 70624-18-9 |
| Molecular Formula | Proprietary Blend | C28H19N3O | C40H71N3O6 |
| Appearance | Light Yellow Powder | White Crystalline | Off-White Granules |
| Thermal Stability | Up to 300°C | 280°C | 260°C |
2. Key Applications & Industry Uses
Primary Functional Advantages:
- Superior UV absorption (280-400nm range)
- Halogen-free stabilization system
- Synergistic effect with phenolic antioxidants
Industry-Specific Implementations:
| Industry | Typical Formulations | Performance Benefit |
|---|---|---|
| Automotive Plastics | PP/TPO bumpers, interior trim | 5+ years color retention |
| Construction Materials | PVC window profiles, PE pipes | 10% higher weatherability vs. standard HALS |
| Packaging Films | BOPP, CPP films | Reduced carbonyl formation |
3. Implementation Case Studies
Case 1: Automotive Exterior Components (Germany)
- Challenge: TPO roof rails showing 40% gloss loss after 2 years
- Solution: 0.3% Tinuvin 783 + 0.1% Irganox 1010
- Result: Maintained 85% initial gloss after 5-year Florida exposure
Case 2: Agricultural Films (China)
- Challenge: PE mulch films degrading in 6 months
- Solution: 0.4% Tinuvin 783 masterbatch
- Result: Extended service life to 18 months with 92% tensile retention
4. Technical Comparison Guide
| Additive Type | Weathering Resistance | Thermal Protection | FDA Compliance |
|---|---|---|---|
| Tinuvin 783 | ★★★★☆ | ★★★★★ | Yes |
| Competitor A | ★★★☆☆ | ★★★☆☆ | No |
5. Contact for Custom Solutions
Request formulation assistance or technical datasheets:
- Email: info@vivalr.com
- Tel: (86) 15866781826
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