Revonox^® 420V is Chitec Technology’s innovative, phenol-free antioxidant derived from palm oil, offering a sustainable alternative to traditional tallow-based antioxidants. Utilizing Chitec's proprietary DAHA^® technology, Revonox^® 420V tackles the yellowing issues often associated with conventional phenolic antioxidants. It delivers exceptional melt stability, strong color retention, and impressive resistance to gas fading, making it an excellent choice for polyolefin applications, including polypropylene (PP) and polyethylene (PE).

Revonox^® 420V pairs well with phosphate esters and light stabilizers like Deox 68 and Chiguard^® 228. This combination significantly boosts melt processing stability and weather resistance in PP and PE fibers, films, and automotive TPO applications. Recommended concentration levels range from 0.05% to 0.15%, with flexibility for specific dosages depending on substrate and application needs.

1. Phenol-Free Formula to Prevent Yellowing
   Built with advanced DAHA^® technology, 420V effectively prevents the discoloration and gas-fading issues common with phenolic antioxidants. This makes it ideal for applications where color stability is crucial, such as films and fibers with large surface areas.
2. Synergistic Stability in Processing
   When combined with Deox 68, 420V delivers a powerful synergistic effect, helping to maintain the initial color and stabilize the melt flow index (MFI) over multiple extrusion cycles.
3. Exceptional High-Temperature Color Stability
   Engineered for high-temperature applications, 420V provides consistent performance during repeated high-temperature extrusions, with much more stable color compared to traditional B-blend antioxidants. This stability makes it ideal for expanding applications of PE and PP in high-speed molding processes.
4. Eco-Friendly with Low Migration for Sustainable Manufacturing
   Derived from plant-based oils and free of animal products, 420V boasts excellent compatibility with polyolefins and minimal migration. It’s FDA-approved, meeting today’s industrial standards for sustainable, green manufacturing.

As antioxidants are depleted during multiple extrusions, they lose their ability to protect polyolefins under thermal stress. Here’s how 420V excels under testing conditions:

1. Polymer: PP (homopolymer, MFI = 5.5)
2. Processing Conditions: Multiple extrusions using a twin-screw extruder (35 mm diameter, L/D = 36) at 230°C and 2.16 kg pressure, with melt flow rate (MFR) measured every 10 minutes
3. Formula: 0.1 phr 420V and 0.1 phr Deox 68

In tests using traditional antioxidants, the melt flow index (MFI) surged from 9.78 to 42.80 during repeated extrusions, indicating severe material degradation. By contrast, the addition of 420V limited the MFI increase to 19.45, significantly enhancing stability. With 420V and Deox 68 combined, the melt flow rate change (ΔMFR) further dropped to 11.79, showing exceptional processing stability and a longer material lifespan.

Chitec conducted high-temperature aging tests on PP, exposing samples to 150°C for 6 days to compare color stability across different antioxidants.

1. Left: Samples containing 0.1 phr phenolic antioxidants and Deox 68 showed noticeable yellowing, indicating poor color stability under prolonged high heat.
2. Right: Samples with 0.1 phr 420V and Deox 68 maintained excellent color stability with minimal yellowing, underscoring 420V's superior performance in high-temperature aging environments.