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POLYPHLOX® FLAME RETARDANTS

HALOGEN-FREE REACTIVE FLAME RETARDANT FOR EPOXY, POLYESTER AND POLYURETHANE RESINS

Due to their versatility and excellent properties, reactive resin systems are used in a wide range of applications, such as transportation (shipping, rail, aviation). In order to meet the fire protection requirements applicable in the respective fields of application, flame retardants must be added to the resin systems.

STRUKTOL® POLYPHLOX® flame retardants offer numerous advantages in use:

  • halogen-free,
  • toxicologically harmless in case of fire,
  • reactive organophosphorus compound with high phosphorus content
  • chemically incorporated in resin matrix.

The high organic phosphorus content and the chemical integration in the cured epoxy resin system significantly reduce flammability and smoke density, that no full scale fire occurs and there is sufficient time for escape. Optimum property profiles with regard to fire protection requirements and other product properties can be achieved via the added quantity of POLYPHLOX® modifier. To further increase the performance of our POLYPHLOX® modifiers, additional synergists can be added.

Struktol® Polyphlox® 3700

Hydroxy functional phosphoric co-monomers

  • Dyn. viscosity at 25 °C: 125 Pa.s
  • Phosphorous Content: 5 %
  • Hydroxyl number: 185 mgKoH/g
Struktol® Polyphlox® 3735

Multi-functional, organophosphorous modified epoxy Novolak resin (based on Struktol® Polyphlox® 3710)

  • Epoxy equivalent weight: 350 g/Eq
  • Softening point: 80 °C
  • Phosphorous Content: 3.8 %
  • Appearance: transparent – yellowish solid resin
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Struktol® Polyphlox® 3742

Multifunctional, organophosphorus modified epoxy resin (based on Struktol® Polyphlox® 3710)

  • Halogen-free flame retardant especially suitable for prepregs and composite materials, e.g. in aerospace and transportation
  • DOPO (Polyphlox® 3710) modified epoxy resin
  • Epoxy equivalent weight: 370 g/Eq
  • Softening point: 57 °C
  • phosphorus content: 4.0 %
  • appearance: yellowish, semi-solid resin
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Struktol® Polyphlox® 3721

Flame retardant epoxy resin formulation with very high phosphorous content
UL94 V0 achievable

  • low viscous, flame retardant epoxy resin formulation  
  • for processing by hand lamination or RTM
  • APP-modified epoxy resin
  • Epoxy equivalent weight: 240 g/Eq
  • Dyn. viscosity (25 °C): 3 Pa.s
  • Phosphorus content: 5.1 %.
  • Appearance: whitish, opaque resin
  • suitable Polyvertec® hardeners: H4, H6, H7, H81

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