Antioxidant 445

Product Overview

Antioxidant 445 represents a premier class of sterically hindered aromatic amine antioxidants designed to provide exceptional thermal stability across a diverse range of polymer matrices and lubricant formulations. As a non-discoloring stabilizer, it effectively scavenges free radicals generated during high-temperature processing, thereby preventing oxidative degradation that can lead to mechanical failure or aesthetic defects in finished products. Our manufacturing process ensures high purity levels, making this chemical an ideal candidate for demanding industrial applications where long-term performance is critical.

The chemical structure of Antioxidant 445, known systematically as Bis[4-(2-phenyl-2-propyl)phenyl]amine, allows for superior synergy when combined with other stabilizer types such as phenolics and phosphites. This synergistic effect enhances the overall protection package, extending the service life of materials exposed to harsh environmental conditions. Unlike primary antioxidants that may cause discoloration, this aromatic amine derivative maintains the visual integrity of light-colored polymers while delivering robust protection against thermal oxidation during extrusion, molding, and curing processes.

Key Specifications

In terms of physical specifications, the product is supplied as a white to off-white powder with tightly controlled volatile content and ash levels. The melting point specification ensures consistent flow characteristics during compounding. Rigorous quality control testing verifies parameters such as sieve residue and volatility to guarantee batch-to-batch consistency. Manufacturers rely on these precise specifications to maintain stable production lines and minimize downtime associated with material variability.

Industrial Applications

• Effective thermal stabilizer for polyolefins including polypropylene and polyethylene masterbatches.
• Provides excellent anti-aging performance in colorful chloroprene rubber cables and insulation materials.
• Compatible with styrenics, polyols, and polyamide engineering plastics for enhanced durability.
• Used in hot melt adhesives to prevent degradation during high-temperature application.
• Formulated into lubricants to prevent sludge formation and viscosity changes in engine oils.
• Suitable for PVC applications where thermal history during processing is severe.

Industrial applications for this stabilizer are extensive, covering key sectors such as polyolefins, styrenics, and polyamide engineering plastics. It is particularly effective in polypropylene and polyethylene masterbatches where thermal history during processing can be severe. Additionally, the compound demonstrates excellent anti-aging performance in colorful chloroprene rubber cables, protecting insulation materials from cracking or hardening over time. Lubricant formulators also utilize this additive to prevent sludge formation and viscosity changes in high-temperature engine oils and industrial gear fluids.

Storage and Handling

Proper handling and storage are essential to maintain product efficacy. Containers should remain tightly closed in a cool, dry environment away from direct sunlight and moisture sources. Our company stands as a professional supplier of functional material additives with a complete industry chain spanning rubber, plastics, coatings, and textiles. We commit to delivering global shipping solutions accompanied by comprehensive Certificates of Analysis. Partner with us for reliable supply chain management and technical support tailored to your specific formulation requirements.