Flame Retardants

JS-91 Halogen Free Phosphorus–Nitrogen Flame Retardant

JS-91 is a halogen free phosphorus–nitrogen flame retardant developed for adhesives, sealants, potting compounds, hot-melt systems, and water- or solvent-based glue formulations. It provides strong flame-retardant performance at low to medium loading, delivering low smoke, low toxicity, and high transparency due to its fine particle size. JS-91 forms intumescent char and releases inert gases during burning, enabling clean and fast self-extinguishing behaviour in demanding adhesive systems.

Attributes

Key Features and Benefits

• Halogen free formulation ensures low toxicity and clean combustion.
• High flame-retardant efficiency supports UL94 V-0 and VTM-0 ratings at typical loadings.
• Fine particle size (3–10 µm) improves transparency and smooth film formation.
• Thermal stability ≥300 °C enables use in PU, epoxy, polyester and high-temperature adhesives.
• Excellent compatibility maintains viscosity, bonding strength, and heat resistance.
• Strong char-forming behaviour enhances fire resistance and reduces smoke.
• Non-corrosive and non-migratory performance supports long-term adhesive stability.

Specifications

Technical Highlights

• Appearance: White powder (crystalline/amorphous).
• Flame-retardant content: ≥99 percent.
• Phosphorus content: ≥10 percent.
• Density: 1.4–1.6 g/cm³.
• Particle size: 3–10 µm.
• Moisture: ≤0.5 percent.
• Decomposition temperature: ≥300 °C.
• Halogen content: None.
• Toxicity profile: Low smoke, low toxicity.
• Flame-retardant standards supported: UL94 VTM-0, UL94 V-0, UL510, GB/T15903, GB/T20631.

Download Technical Data Sheet (TDS)

Practical industry uses

Applications

• Electronics and electrical adhesives: bonding films, flexible laminates, potting compounds, PCB adhesives.
• Automotive adhesives and sealants: interior bonding, insulation tapes, PU adhesives, NVH sealants.
• Construction and infrastructure: fire-resistant sealants, insulation adhesives, flooring adhesives.
• Consumer goods: tape adhesives, textile bonding, footwear adhesives.
• Industrial manufacturing: composite lamination, protective coatings, filter assembly adhesives.
• Suitable adhesive systems: acrylic PSA, water-based acrylic, PU adhesives, epoxy adhesives, hot-melt EVA/SIS/SBS, silicone-modified and rubber-based adhesives.
• Typical substrates: PET film, PVC film, PE film, textiles, fiberglass, aluminium foil, paper composites.