Light Stabilizer 622
Light Stabilizer 622, identified by CAS 65447-77-0, is a high-molecular-weight polymeric hindered amine light stabilizer (HALS). Chemically, it is a polyester composed of succinic acid and 4-hydroxy-2,2,6,6-tetramethyl-1-piperidineethanol. This specific structural composition grants the material exceptional thermal stability and low volatility, making it a preferred choice for applications requiring long-term durability under intense ultraviolet exposure. Its polymeric nature ensures minimal migration and extraction, which is critical for maintaining performance in demanding environmental conditions.
In industrial and research contexts, this stabilizer is valued for its ability to protect organic substrates from photodegradation. It functions by scavenging free radicals generated by UV radiation, thereby preventing the loss of physical properties such as tensile strength and color integrity. Because of its high molecular weight, it exhibits excellent compatibility with various polymer matrices, ensuring uniform distribution and consistent protection throughout the material’s lifecycle.
Handling Light Stabilizer 622 typically involves standard industrial safety practices for solid chemical additives. It is generally supplied in granular or powder form, offering ease of dosing during melt processing. Its versatility across different processing temperatures and its synergy with other UV absorbers or antioxidants make it a foundational component in the formulation of high-performance plastics and coatings.
• This stabilizer is extensively utilized in the production of polyolefins, including polyethylene and polypropylene, where it provides superior protection for thin-section applications such as fibers, tapes, and films. Its high resistance to extraction makes it particularly effective for agricultural films and geosynthetics that are frequently exposed to water and harsh weather conditions.
• In the automotive and construction industries, CAS 65447-77-0 is incorporated into molded parts and extruded profiles to prevent surface cracking and chalking. It helps maintain the aesthetic and structural integrity of exterior components, such as bumpers and window frames, by mitigating the oxidative stress induced by prolonged sunlight exposure.
• The compound serves as an essential additive in various engineering plastics and elastomers, including polyurethanes and polyamides. By enhancing the light fastness of these materials, it enables their use in high-visibility safety equipment and durable consumer goods that must withstand degradation without sacrificing mechanical performance.
• It is frequently employed in combination with low-molecular-weight HALS or UV absorbers to create synergistic stabilization systems. These blends are optimized for coatings and adhesive formulations, where the polymeric nature of Light Stabilizer 622 ensures that the protective properties remain stable even during high-temperature curing processes or long-term outdoor service.
Product Name: Light Stabilizer 622
For global customers, we provide complete technical documentation to support product evaluation, regulatory compliance and safe handling during transportation and application.