[New Product Launch] OMNISTAB® AN91PQ- High Temperature Resistance & Low Volatility Stabilizer for Polymer Processing

OMNISTAB® AN91PQ

A novel phosphite antioxidant

Core Advantages

1. Outstanding Thermal Stability, No Discoloration or Decomposition During Processing

OMNISTAB® AN91PQ features a thermal decomposition temperature of around 300℃, far superior to conventional phosphite antioxidants. During high-temperature extrusion, injection molding and blow molding, it greatly improves finished product appearance and yield:

•  Stabilizes polymer molecular chains

•  Suppresses thermal oxidation and yellowing

•  Delivers uniform, transparent product appearance

2. Dual Anti-Oxidation Function for Long-Term Material Protection

OMNISTAB® AN91PQ vs traditional antioxidants:

•  Slower increase in yellowing index(ΔYI)

•  Outperforms traditional antioxidant systems in 1000-hour aging tests

Benefiting from its unique biphenyl dual-active structure, it captures free radicals and decomposes peroxides during processing to block thermal-oxidative aging chain reactions. Meanwhile, it delivers persistent protection throughout the service life of finished goods, effectively slowing down material aging, embrittlement and discoloration, and extending product service life significantly.

3. Low Volatility, High Compatibility & Durable Protection

High purity brings ultra-low volatility: no odor, blooming or contamination during processing. It features excellent compatibility with most polymers without compromising transparency or mechanical properties, perfectly matching high-end transparent and precision part production. Ideal for all high-temperature processing scenarios of premium polymers.

4. Eco-Friendly & Safe

•  Not classified as high-hazard substances under GHS; no strong irritant or corrosive labels

•  Non-dangerous goods for easier transport, storage and handling

•  FDA food-contact certified, applicable to food-grade PS, PC, polyolefins and more

•  Minimal volatile emissions at high temperatures, cutting exhaust emissions

•  Boosts plastic recyclability with long-lasting anti-aging performance

Application Fields

•  Engineering plastics: PC, PET, PBT, PA (eliminates yellowing and mechanical degradation under high heat)

•  Elastomers & rubbers: TPU, SBS, SEBS (enhances anti-yellowing and weather resistance)

•  High-end resins: Acrylic, epoxy resins (maintains consistent transparency)

•  Films, pipes and injection-molded parts: Ideal for high-transparency, weather-resistant and long-service-life products

Why Choose OMNISTAB® AN91PQ?

Compared with ordinary antioxidants, AN91PQ achieves four major upgrades: superior high-temperature stability, long-lasting anti-oxidation, low volatile eco-performance and cost efficiency.

Most high-temperature and long-term protection demands can be fulfilled by this single additive alone, simplifying formulations, cutting procurement and production costs, and elevating product competitiveness in high-end markets.

For more details, please don’t hesitate to contact DELTACHEM.