Antioxidant DHOP

Product Overview

Antioxidant DHOP represents a class of high-performance phosphite ester stabilizers engineered for demanding polymer processing applications. Identified by CAS number 80584-86-7, this specialized chemical additive functions primarily as a secondary antioxidant, offering exceptional protection against oxidative degradation during manufacturing and throughout the product lifecycle. Its unique molecular structure, characterized by a high molecular weight of approximately 2007.93 g/mol, ensures low volatility and minimal extraction loss, making it an ideal choice for long-term stability in various resin systems.

As a leading supplier in the functional additives sector, we provide this material with strict quality control to meet international standards. The liquid form factor facilitates easy incorporation into formulation matrices, ensuring homogeneous dispersion without the need for complex melting processes. This efficiency translates to reduced energy consumption and improved processing throughput for our industrial partners.

Key Performance Features

The chemical architecture of Antioxidant DHOP provides distinct advantages over conventional phosphite antioxidants. Its high phosphorus content enables a superior capacity for decomposing hydroperoxides (ROOH), which are primary initiators of polymer chain scission and discoloration. By effectively neutralizing these reactive species, DHOP preserves the mechanical integrity and aesthetic quality of the final product.

• Enhanced Hydroperoxide Decomposition: Demonstrates stronger activity compared to standard phosphite antioxidants, significantly delaying oxidation onset.
• Low Volatility: The high molecular weight structure minimizes loss during high-temperature extrusion or molding processes.
• Synergistic Compatibility: Designed to work seamlessly with hindered phenolic antioxidants and UV absorbers to create a robust stabilization package.
• Low Hydroxyl Number: With a value of approximately 20mg KOH/g, it maintains chemical stability without interfering with cross-linking reactions.
• Color Stability: Helps maintain water-white clarity in transparent applications such as PVC films and coatings.

Technical Specifications

Industrial Applications

Antioxidant DHOP is widely utilized across multiple sectors of the polymer and coating industries. Its versatility allows it to serve as a critical component in formulations requiring high thermal stability and color retention. In the PVC industry, it prevents yellowing during processing and extends the service life of films and profiles. For polyurethane systems, including foams, elastomers, and adhesives, it protects against oxidative degradation that can lead to brittleness or loss of tensile strength.

Additional applications include stabilization of rubber and latex products, where it maintains elasticity over time. It is also effective in unsaturated resins and rosin derivatives, ensuring consistent performance in adhesives and sealants. Furthermore, in PUR coatings, DHOP contributes to weatherability and gloss retention, making it suitable for automotive and industrial protective finishes.

Storage and Handling

To maintain optimal quality, Antioxidant DHOP should be stored in a cool, dry environment away from direct sunlight and moisture sources. Containers must remain tightly closed when not in use to prevent contamination or hydrolysis. We recommend standard industrial hygiene practices during handling, including the use of appropriate personal protective equipment. The product is typically packaged in 200 KG drums for efficient logistics and bulk supply chain integration. Our company ensures reliable global delivery with comprehensive documentation, including Certificates of Analysis (COA) and technical data sheets for every shipment.