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Intumescent phosphorus-nitrogen synergistic system enabling efficient char formation under thermal stress.
Halogen-free and low-smoke formulation meeting stringent environmental and safety regulations (e.g., RoHS, REACH).
Excellent thermal stability up to 300 °C, ensuring process compatibility in high-temperature polymer processing.
Good dispersion and compatibility with engineering thermoplastics including polypropylene (PP), polyethylene (PE), and thermoplastic elastomers (TPE).
Low water solubility and hydrolytic stability, supporting long-term performance in humid or outdoor applications.
Flame-retarded polypropylene for automotive interior components (dashboards, trim, battery housings).
Wire and cable jacketing compounds requiring UL 94 V-0 rating and low-corrosivity during combustion.
Electrical enclosures and housings for consumer electronics and industrial equipment.
Building and construction materials including insulation foams and rigid PVC profiles.
Textile back-coatings and technical fabrics for transportation interiors (buses, trains, aircraft).
| Chemical Type | Organophosphorus-nitrogen intumescent additive |
| Product Form | Free-flowing white to off-white granular powder |
| Appearance | Granules, uniform size distribution |
| Density (25 °C) | ~1.4–1.5 g/cm³ |
| Onset Decomposition Temperature | ≥280 °C (by TGA, 10 °C/min, N₂) |
| Phosphorus Content (as P) | 16.5–17.5 wt% |
| Nitrogen Content (as N) | 13.0–14.0 wt% |
| Moisture Content | ≤0.5 wt% (by Karl Fischer titration) |
Q1: What types of polymers is Italmatch SH compatible with?
A: Italmatch SH is specifically designed for use in engineering thermoplastics such as polyamide 6 and polyamide 66, where it delivers effective flame retardancy without significantly compromising mechanical performance or processability.
Q2: How does Italmatch SH achieve flame retardancy?
A: It operates through an intumescent mechanism: upon heating, the phosphorus component promotes char formation while the nitrogen source enhances expansion and thermal insulation—creating a protective barrier that slows heat and mass transfer during combustion.
Q3: Does Italmatch SH affect the mechanical properties of the final compound?
A: When properly compounded, Italmatch SH typically maintains good retention of tensile strength and impact resistance in PA6/PA66 systems—especially compared to halogenated alternatives—and supports balanced performance across processing, flame retardancy, and end-use requirements.
Q4: Is Italmatch SH suitable for applications requiring low smoke and halogen-free solutions?
A: Yes—it is a halogen-free, phosphorus-nitrogen-based system engineered to meet stringent demands for reduced smoke density and toxic gas emission, making it well-suited for transportation, electronics, and building & construction applications where fire safety and environmental compliance are priorities.
Q5: What is the typical dosage range for Italmatch SH in polymer formulations?
A: Dosage depends on formulation requirements and target flame retardancy level, but Italmatch SH is generally used at low concentrations—typically ranging from 0.1% to 2% by weight—in optimized PA6/PA66 systems to achieve UL94 V-0 classification.
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