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Highly effective primary phenolic antioxidant for thermal and oxidative stabilization.
Excellent compatibility with polyolefins, including PP and HDPE.
Low volatility and minimal migration, ensuring long-term performance in demanding processing conditions.
Non-staining and non-discoloring—ideal for applications requiring color stability.
Complies with major food-contact regulations including EU Regulation (EC) No. 10/2011 and FDA 21 CFR §178.2010.
Polypropylene (PP) fibers and nonwovens for automotive and hygiene markets.
High-density polyethylene (HDPE) pipes and pressure-rated containers.
Food-grade packaging films and rigid containers.
Injection-molded technical parts exposed to elevated temperatures during service life.
Recycled polyolefin compounds requiring enhanced melt stability during reprocessing.
| Chemical Type | Synthetic hindered phenol |
| Product Form | Free-flowing white to off-white granules |
| Appearance | Granular, free of visible dust or lumps |
| Melting Point | 125–135 °C (determined by DSC) |
| Active Content | ≥ 99.0% (by GC) |
| Heavy Metals (as Pb) | < 5 ppm |
| Residue on Ignition | < 0.1% |
| Primary Applications | Polyolefin stabilization (PP, PE), food-contact & industrial polymers |
Q1: What is the primary function of Bruggolen H161 in polymer processing?
A: Bruggolen H161 is a high-performance hindered phenolic antioxidant designed to protect thermoplastics—especially polyolefins—against thermo-oxidative degradation during extrusion, injection molding, and other high-temperature processing steps.
Q2: Is Bruggolen H161 suitable for food-contact or medical-grade polymer applications?
A: Bruggolen H161 is formulated for use in polymers intended for indirect food contact and non-implantable medical devices, subject to compliance with applicable regional regulatory frameworks. End-use suitability must be confirmed through full formulation testing and regulatory assessment by the final product manufacturer.
Q3: How does Bruggolen H161 compare to conventional phenolic antioxidants in terms of thermal stability?
A: Bruggolen H161 exhibits enhanced thermal stability compared to many standard hindered phenols, allowing it to remain effective at elevated processing temperatures common in modern high-output polyolefin production lines without premature volatilization or decomposition.
Q4: What is the typical dosage range for Bruggolen H161 in polypropylene formulations?
A: Dosage depends on formulation requirements, processing conditions, and end-use performance targets, but Bruggolen H161 is typically used at low concentrations—generally ranging from 0.1% to 2% by weight—in polypropylene and related polyolefin systems.
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