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Halogen-free formulation ensuring low smoke density and reduced toxic gas emission during combustion.
Excellent thermal stability, maintaining performance up to 300°C in polymer processing environments.
High phosphorus content enabling efficient char formation and flame inhibition in thermoplastics.
Good compatibility with polyolefins, engineering plastics, and thermoplastic elastomers without significant impact on mechanical properties.
RoHS-compliant and REACH-conformant, supporting global regulatory requirements for sustainable materials.
Flame-retarded polypropylene (PP) for automotive interior components.
Wire and cable insulation in low-smoke zero-halogen (LSZH) compounds.
Electrical enclosures and housings for consumer electronics and industrial equipment.
Thermoplastic elastomer (TPE) formulations requiring UL94 V-0 rating at thin wall sections.
Non-woven fabrics and spunbond materials used in transportation seating and building insulation.
| Chemical Type | Organophosphorus-based, halogen-free flame retardant |
| Product Form | Free-flowing white granular solid |
| Appearance | White to off-white granules |
| Density (25°C) | 1.35–1.42 g/cm³ |
| Decomposition Onset Temperature | ≥270°C (by TGA, 10°C/min, N₂) |
| Phosphorus Content | 18.5–19.2 wt% |
| Moisture Content | ≤0.2 wt% (by Karl Fischer titration) |
| Particle Size (D90) | ≤350 μm |
Q1: What types of polymers is ICL FR-11 compatible with?
A: ICL FR-11 is primarily designed for use in thermoplastic elastomers (TPEs), thermoplastic polyurethanes (TPUs), and certain engineering thermoplastics where halogen-free flame retardancy is required. It demonstrates good compatibility and dispersion in polar polymer matrices but may require evaluation for long-term stability in highly acidic or hydrolytically sensitive systems.
Q2: How does ICL FR-11 achieve flame retardancy without halogens?
A: ICL FR-11 functions through a condensed-phase mechanism, promoting char formation on the polymer surface during thermal decomposition. This protective char layer insulates the underlying material, reduces fuel release, and limits heat feedback—enabling effective flame suppression while maintaining halogen-free status and supporting low-smoke, low-toxicity performance profiles.
Q3: Is ICL FR-11 suitable for applications requiring regulatory compliance with RoHS or REACH?
A: Yes, ICL FR-11 is formulated to meet the substance restrictions under EU RoHS Directive and REACH Annex XVII requirements for flame retardants. It contains no intentionally added substances listed as SVHCs, and its composition aligns with current industry expectations for restricted-substance compliance—though final verification should be conducted within the specific end-use formulation and processing conditions.
Q4: What is the typical dosage range for achieving V-0 rating in UL 94 tests?
A: The effective dosage varies depending on base polymer type, thickness, and processing method, but ICL FR-11 is generally used at low concentrations—typically ranging from 0.1% to 2% by weight—to achieve V-0 classification in thin-section UL 94 evaluations. Optimization is recommended via small-scale trials to balance flame performance, mechanical properties, and processability.
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