Light Stabilizer 622
[CAS# 65447-77-0]

Identification

• Classification: Catalysts and additives >> UV absorber
• Name: Light Stabilizer 622
• Synonyms: HALS BW-10LD (622); Ciba Tinuvin 622; Poly(4-hydroxy-2,2,6,6-tetramethyl-1-piperidine ethanol-alt-1,4-butanedioic acid)
• Molecular Formula: (C₁₅H₂₅NO₄)_n
• CAS Registry Number: 65447-77-0
• EC Number: 613-797-0
• SMILES: CC(=O)CCC(=O)OCCN1C(CC(CC1(C)C)OC)(C)C

Properties

• Melting point: >350 °C
• Flash point: 428 °F
• Water solubility: 1.6 ppm at 20 °C

Safety Data

• Hazard Symbols: GHS07 Warning
• Risk Statements: H315-H319-H335
• Safety Statements: P261-P305+P351+P338

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Chronic hazardous to the aquatic environment	Aquatic Chronic	3	H412
Chronic hazardous to the aquatic environment	Aquatic Chronic	4	H413
Chronic hazardous to the aquatic environment	Aquatic Chronic	1	H410

Discovery and Applications

Light Stabilizer 622, also known as 2,4-bis(2,4-di-tert-butylphenyl)-6-(2-hydroxy-3,5-di-tert-butylphenyl)-1,3,5-triazine, is a chemical compound extensively utilized in various industries, particularly in plastics, coatings, and polymers. Its development is rooted in the ongoing quest for effective methods to protect materials from the damaging effects of ultraviolet (UV) radiation and other environmental factors that lead to degradation.

The discovery of Light Stabilizer 622 can be traced back to advancements in the field of polymer chemistry and material science during the late 20th century. Researchers sought to create additives that could enhance the durability and longevity of polymeric materials exposed to sunlight. This compound emerged as a promising candidate due to its unique molecular structure, which allows it to absorb UV radiation effectively and convert it into less harmful energy forms. Its dual functionality as both a light stabilizer and an antioxidant further enhances its protective capabilities.

Light Stabilizer 622 is particularly valued for its ability to improve the photostability of various polymers, including polyolefins, polyvinyl chloride (PVC), and polycarbonate. When incorporated into these materials, it significantly reduces the rate of degradation caused by UV radiation, thus extending their service life and maintaining their aesthetic properties. This is especially important in applications such as outdoor furniture, automotive parts, and construction materials, where exposure to sunlight is inevitable.

In addition to its application in plastics, Light Stabilizer 622 is also utilized in coatings and paints. Its inclusion in formulations helps to maintain color integrity and prevent chalking or fading over time. This is crucial for consumer products that require a durable finish, such as exterior paints and automotive coatings. The compound's effectiveness in stabilizing color and preventing degradation enhances the overall quality and performance of these products.

The versatility of Light Stabilizer 622 is further evident in its application within the textile industry. Fabrics treated with this compound exhibit improved resistance to fading and degradation caused by UV exposure, making it suitable for outdoor textiles and upholstery. This property not only enhances the longevity of textile products but also maintains their visual appeal, providing consumers with high-quality, durable options.

Moreover, ongoing research has highlighted the potential of Light Stabilizer 622 in formulations designed for agricultural applications. Its use in greenhouse films and agricultural coatings can protect crops from harmful UV radiation, thereby promoting healthy plant growth and improving yield.

While the benefits of Light Stabilizer 622 are extensive, it is important to consider its environmental and health implications. As with many chemical additives, there is a need for thorough evaluation of its safety profile and potential impact on ecosystems. Regulatory agencies continue to monitor the use of such compounds to ensure they meet safety standards and do not pose risks to human health or the environment.

In conclusion, Light Stabilizer 622 is a vital compound in the field of polymer chemistry, offering enhanced protection against UV degradation across various applications. Its discovery and development reflect the industry's commitment to improving material durability and performance, particularly in outdoor and high-exposure environments.

References

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