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Thioester & Sulfur-Based Anitoxidants

Thioester & Sulfur-Based (DLTDP, DSTDP, Irganox® PS 800/802, Seenox® series)

**Thioester & Sulfur-Based Antioxidants**  
*Secondary peroxide decomposers for enhanced long-term thermal oxidation resistance*

Thioester and sulfur-based antioxidants excel as hydroperoxide neutralizers, converting reactive peroxides into inert alcohols and sulfenic acids to regenerate primary phenolics—delivering superior synergy and extended service life in high-temperature environments. Ideal for preventing chain scission, discoloration, and viscosity loss in polymers and fluids under prolonged heat exposure.

Our selection spans classic thioesters (DLTDP, DSTDP), advanced sulfur-bridged compounds (Irganox® PS 800, PS 802), and eco-friendly low-odor variants compliant with REACH and food-contact regulations. Offered in odor-masked powders, low-dust granules, viscous liquids, and custom-dispersed masterbatches for seamless integration.

**Key Benefits**  
- **Regenerative Synergy**: Recycles phenolics for 3–6× longer oxidation induction time (OIT) in DSC testing  
- **High-Temp Endurance**: Stable up to 350°C, minimizing volatilization in extrusion and blow molding  
- **Low Odor & Migration**: Reduced sulfur off-gassing for automotive interiors and medical tubing  
- **Cost Efficiency**: 20–30% lower loading vs. standalone phosphites in rPE/rPP formulations  

**Typical Applications**  
- Polyolefins (LDPE films, PP fibers, recycled blends)  
- Engineering plastics (PA6/66, TPU, TPE)  
- Industrial lubricants (gear oils, compressor fluids)  
- Rubber compounds (NR, CR, VMQ seals)  
- Fuel stabilizers (diesel, ethanol blends)  

All grades include TDS, SDS, and COA.