Irganox 245
Irganox 245, identified by CAS number 36443-68-2, is a high-performance sterically hindered phenolic antioxidant widely utilized in the polymer industry. Chemically known as triethylene glycol bis(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate, it serves as a primary stabilizer to protect organic substrates against thermo-oxidative degradation. Its molecular structure provides excellent thermal stability and low volatility, making it particularly effective during high-temperature processing cycles where maintaining the integrity of the polymer matrix is critical.
This additive is characterized by its superior color stability and resistance to extraction, which are essential for maintaining the aesthetic and mechanical properties of finished goods. In industrial and research contexts, it is valued for its compatibility with a broad range of substrates and its ability to work synergistically with secondary antioxidants like phosphites. Proper handling requires standard industrial hygiene practices to ensure safety and maintain the chemical’s efficacy over time.
• In the production of styrenic polymers, such as high-impact polystyrene (HIPS) and acrylonitrile butadiene styrene (ABS), this antioxidant is crucial for preventing yellowing and maintaining physical strength during polymerization and subsequent molding processes. It effectively inhibits the formation of free radicals that lead to polymer chain scission and cross-linking.
• It is extensively applied in the stabilization of thermoplastic polyurethanes (TPU) and polyamides, where it provides long-term thermal stability and protects the material from oxidative damage during service life. Its low volatility ensures that the stabilizer remains within the polymer matrix even under demanding environmental conditions or elevated temperatures.
• The compound is highly effective in polyvinyl chloride (PVC) applications and various elastomers, offering protection against heat-induced degradation without affecting the initial color of the product. It is often used in synthetic fibers and adhesives to enhance durability and prevent the loss of adhesive strength caused by oxidative aging.
• Due to its excellent extraction resistance, it is a preferred choice for applications involving contact with water or organic solvents. It is frequently incorporated into engineering plastics and specialty coatings to ensure that the antioxidant remains functional throughout the product’s lifecycle, providing consistent protection against environmental stressors.
Product Name: Irganox 245
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