Antioxidant 9228

Product Overview

Antioxidant 9228 represents a class of high molecular weight phosphite antioxidants designed for demanding polymer processing environments. Chemically known as 3,9-Bis(2,4-dicumylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane, this specialty additive provides exceptional protection against thermal degradation and oxidation. Its unique spiro structure contributes to outstanding hydrolytic stability, ensuring performance consistency even under challenging moisture conditions during manufacturing and end-use applications.

As a premier supplier in the functional materials sector, we ensure that every batch of Antioxidant 9228 meets rigorous quality standards. This product is engineered to maintain melt flow stability and color protection, making it an essential component for manufacturers seeking to enhance the longevity and aesthetic quality of their polymer products.

Key Performance Features

• Superior Thermal Stability: Withstands high processing temperatures without significant degradation or volatilization.
• Exceptional Hydrolytic Stability: Remains granular and free-flowing even when exposed to elevated moisture levels, preventing equipment corrosion.
• Color Protection: Minimizes yellowing and discoloration during high-temperature processing and extended service life.
• Melt Flow Optimization: Ensures consistent viscosity and processing efficiency in complex polymer systems.
• Low Volatility: High molecular weight structure reduces loss during extrusion and molding processes.

Technical Specifications

Industrial Applications

Antioxidant 9228 is versatile across various polymer matrices, offering tailored solutions for specific industry needs. In polypropylene (PP) systems, it serves as a highly efficient process stabilizer, particularly when used as the sole phosphite antioxidant. For polyethylene (PE) applications, including both HDPE and LDPE, it delivers excellent color and melt flow stability at low dosage levels, optimizing cost-performance ratios.

Engineering plastics such as polycarbonate (PC) benefit significantly from the high thermal resistance of Antioxidant 9228. Unlike conventional phosphites that may degrade or volatilize under extreme heat, this additive maintains integrity, protecting the polymer chain from oxidative breakdown. Common end-use scenarios include automotive components, household appliances like dishwashers and dryers, and transportation vehicle parts where durability and appearance are critical.

Handling And Storage

To maintain optimal quality, containers should be kept tightly closed in a cool, dry environment. The product is packaged in 25kg cartons suitable for global logistics. Our commitment to quality extends beyond manufacturing, providing comprehensive support including Certificates of Analysis (COA) and technical formulation guidance to ensure seamless integration into your production processes.