The performance and longevity of plastic materials are heavily dependent on their ability to resist degradation. Thermo-oxidative degradation, driven by heat, oxygen, and mechanical stress during processing and use, is a primary culprit behind material failure. Antioxidants are essential additives that protect polymers from these damaging effects. Among the versatile and highly effective options available, Triethylene glycol bis(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate, known as Antioxidant 245 (CAS 36443-68-2), stands out for its broad applicability and performance.

As a leading manufacturer and supplier in China, we are dedicated to providing high-quality chemical solutions. This guide delves into the comprehensive applications of Antioxidant 245, offering insights for R&D scientists, product formulators, and procurement managers.

Antioxidant 245: A Versatile Polymer Stabilizer
Antioxidant 245 is a sterically hindered phenolic antioxidant characterized by its high efficiency, low volatility, low odor, and excellent compatibility with a wide range of polymers. These attributes make it an ideal choice for applications requiring long-term thermal stability and protection during demanding processing conditions.

Key Polymer Applications:

• Styrene Polymers:
  • High Impact Polystyrene (HIPS): Antioxidant 245 is crucial for protecting HIPS during extrusion and molding, preventing yellowing and maintaining impact strength. This is vital for manufacturers of appliance housings and disposable containers.
  • Acrylonitrile Butadiene Styrene (ABS): ABS is widely used in automotive parts, electronics, and toys. Antioxidant 245 helps maintain its mechanical properties and aesthetic appearance by preventing degradation caused by heat and oxidation during manufacturing and throughout its service life.
  • Methyl Methacrylate-Butadiene-Styrene (MBS): As a processing aid and impact modifier for PVC and other plastics, MBS also benefits from the stabilization provided by Antioxidant 245, ensuring its effectiveness and longevity.
• Engineering Plastics:
  • Polyoxymethylene (POM) / Acetal: POM is known for its strength and low friction. Antioxidant 245 helps preserve these properties by preventing degradation during high-temperature processing, making it suitable for gears, bearings, and automotive components.
  • Polyamides (PA) / Nylons: Polyamides are used in demanding applications requiring toughness and heat resistance. Antioxidant 245 enhances their long-term thermal stability, preventing embrittlement and maintaining mechanical integrity in automotive and industrial parts.
  • Polyesters: For applications ranging from films to fibers, Antioxidant 245 contributes to the overall stability and durability of polyester resins.
• Polyurethanes (PU):
  • Spandex / Elastane Fibers: Protects against thermal degradation during fiber production and use.
  • Polyurethane Adhesives and Sealants: Enhances the durability and weather resistance of these critical bonding materials.
  • Reaction Injection Molding (RIM) and Thermoplastic Polyurethanes (TPU): Improves processing stability and the long-term performance of PU parts.
• Polyvinyl Chloride (PVC):
  • PVC Polymerization: Antioxidant 245 can function as an effective chain terminator in the PVC polymerization process, aiding in process control and product consistency.

Procurement and Technical Support
For businesses seeking to buy high-quality Antioxidant 245, NINGBO INNO PHARMCHEM CO.,LTD. is your reliable partner. As a leading manufacturer and supplier in China, we offer competitive pricing and a stable supply chain. Our technical team can also provide guidance on optimal dosage and synergistic combinations for your specific applications. Contact us today to request a quotation or learn more about our polymer additive solutions.