Hindered Amine Light Stabilizer 944 (UV944) – Comprehensive Product Description and Application Guide
What is Hindered Amine Light Stabilizer 944 (UV944)?
Hindered Amine Light Stabilizer 944, commonly known as UV-944, is a high-molecular-weight HALS (Hindered Amine Light Stabilizer) used in a wide range of polymer applications to protect against UV radiation-induced degradation. It is a highly effective light stabilizer that enhances the weatherability and longevity of polymers exposed to sunlight and other environmental stressors. UV-944 is particularly suitable for polyolefins, polyurethanes, and other plastics requiring superior resistance to photodegradation.
As a high-performance additive, UV-944 works by scavenging free radicals generated during polymer degradation, preventing chain scission and maintaining the mechanical and aesthetic properties of the material. Its superior resistance to migration and volatility makes it a preferred choice in various industries, including packaging, automotive, agricultural films, and construction materials.
| Content | UV944 |
| Chemical Name | Poly-{[6-[(1,1,3,3-tetramethyl butyl)amino]-1,3,5-triazine-2,4-diyl][(2,2,6,6-tetrameteryl -4-piperidinyl)imino]-1,6-hexanediyl[(2,2,6,6-tetramethyl-4-piperidyl)imino]} |
| Formula | [C35H64N8]n (n=4-5) |
| CAS NO | 71878-19-8 70624-18-9 (US) |
| Appearance | white powder or granule |
| Light Transmittance | ≥93 %(425nm) ≥95 %(450nm) |
| Volatile Matter | ≤0.5% |
| Ash Content | ≤0.1% |
| Melting Point | 110 – 130 °C |
Functions of UV944
The primary role of Hindered Amine Light Stabilizer UV-944 is to improve the durability and stability of polymers by inhibiting the effects of UV radiation. Below are some of its core functions:
1. UV Protection and Weatherability Enhancement
- Absorbs harmful UV radiation and prevents degradation of plastic materials.
- Reduces surface chalking, discoloration, and embrittlement caused by prolonged sun exposure.
- Enhances the lifespan of polymers, especially in outdoor applications.
2. Free Radical Scavenging Mechanism
- Acts as a highly efficient stabilizer by neutralizing free radicals generated during UV exposure.
- Prevents polymer chain breakdown, preserving mechanical strength and flexibility.
- Works synergistically with UV absorbers and antioxidants for enhanced stability.
3. Low Volatility and Migration Resistance
- Ensures long-term performance by remaining in the polymer matrix without significant loss due to evaporation.
- Minimizes blooming or exudation, preserving surface aesthetics and preventing defects in polymer applications.
4. High Compatibility with Various Polymers
- Suitable for use in multiple thermoplastics and elastomers, including:
- Polypropylene (PP)
- Polyethylene (PE)
- Polyurethane (PU)
- ABS resins
- Polyamides
- Engineering plastics
- Thermoplastic polyolefins (TPO)
- Adhesives and coatings
Applications of UV944
Due to its excellent light stabilization and anti-aging properties, UV-944 is widely used in various industrial and consumer applications, including:
1. Agricultural Films and Greenhouse Covers
- Protects plastic films used in agriculture from UV degradation.
- Enhances film longevity, reducing replacement costs and improving sustainability.
- Used in mulch films, tunnel films, and greenhouse coverings.
2. Automotive Components
- Applied in automotive interiors and exteriors, including dashboards, bumpers, and trims.
- Prevents discoloration and brittleness caused by prolonged UV exposure.
- Enhances the durability of thermoplastic elastomers used in car parts.
3. Packaging Materials
- Helps maintain the integrity of flexible and rigid packaging films.
- Prevents yellowing and brittleness in food and industrial packaging materials.
- Enhances recyclability and reusability of plastic packaging.
4. Construction and Infrastructure Materials
- Used in plastic roofing sheets, pipelines, siding, and insulation materials.
- Extends service life by reducing degradation from UV exposure and temperature fluctuations.
- Prevents color fading and loss of mechanical properties in outdoor polymer structures.
5. Synthetic Fibers and Textiles
- Applied in synthetic fiber production to enhance UV resistance in outdoor textiles.
- Used in geotextiles, awnings, artificial turf, and shade nets.
- Maintains fiber strength and appearance over prolonged outdoor use.
6. Adhesives and Sealants
- Used in polyurethane-based adhesives and sealants to improve UV resistance.
- Prevents yellowing and loss of adhesion strength due to sunlight exposure.
- Ensures long-term performance in construction and automotive applications.
7. Coatings and Paints
- Enhances durability in automotive, industrial, and marine coatings.
- Protects painted surfaces from UV-induced chalking and fading.
- Works synergistically with UV absorbers for superior performance.
Why Choose EcoChem UV944?
EcoChem’s Hindered Amine Light Stabilizer 944 (UV-944) stands out due to its superior performance, quality consistency, and tailored solutions for various applications. Here’s why EcoChem UV-944 is the best choice:
1. High-Performance Light Stabilization
EcoChem UV-944 provides industry-leading UV protection, ensuring that plastics maintain their physical and aesthetic properties for extended periods. Its high molecular weight offers superior migration resistance, making it a long-lasting stabilizer.
2. Excellent Thermal Stability and Compatibility
EcoChem UV-944 exhibits excellent thermal stability, making it suitable for high-temperature processing. It integrates seamlessly with different polymer systems without compromising their intrinsic properties.
3. Synergistic Performance with Other Additives
UV-944 works effectively in combination with UV absorbers, antioxidants, and other stabilizers. EcoChem provides expert formulation guidance to maximize performance based on specific application needs.
4. Environmentally Friendly and Regulatory Compliance
EcoChem UV-944 complies with international safety and environmental standards, ensuring that it meets the stringent requirements of global markets. It is free from hazardous substances and is safe for use in food packaging and consumer goods.
5. Cost-Effective and Sustainable Solutions
By prolonging the lifespan of plastic materials, EcoChem UV-944 reduces the need for frequent replacements, leading to cost savings and lower environmental impact. It supports sustainability efforts by enhancing the recyclability of plastic products.
6. Global Availability and Technical Support
EcoChem’s extensive global distribution network ensures timely delivery of UV-944 to customers worldwide. Our expert technical support team assists with formulation optimization, troubleshooting, and customized solutions to meet specific industry demands.
Conclusion
Hindered Amine Light Stabilizer 944 (UV944) is a critical additive for enhancing the durability and performance of plastics exposed to UV radiation. Its ability to prevent degradation, discoloration, and mechanical failure makes it indispensable for industries ranging from agriculture and automotive to packaging and construction.
EcoChem UV-944 stands out due to its superior stability, compatibility, and cost-effectiveness. By choosing EcoChem’s UV-944, industries can achieve long-lasting, high-quality polymer products that withstand environmental stress while maintaining their integrity and appearance.
For more information, technical data sheets, or formulation assistance, contact EcoChem today and discover how UV-944 can elevate your polymer applications.
Free Sample: 50g
MOQ: 25kgs
HS Code:3812399000
Freight Term: FOB Lianyungang/Shanghai Port or CIF, CFR
