Phosphorus Flame Retardants

PFRs not only react with the radicals like BFRs, but also able to act in the condensed phase by enhancing char formation, yielding intumescence (foaming-up) or formation of inorganic glasses. In fact, PFRs are most commonly known as char formers, because during the burning process they produce phosphoric acids, which, reacting with the substrate, produce a char that acts as a protection of the substrate itself. Most used PFRs are as the table below, their main area of application is in polyamides(PA), polyesters(PET/PBT), polyolefins and polystyrene (PS) formulations, especially in electrical and electronic insulation components.

Name CAS No. Chemical name Feature
TPP 115-86-6 Triaryl phosphates TPP Is a Halogen Free Flame Retardant Plasticizer For
Phenolic Resin, Vinyl Resin, And Rubber.
BDP 5945-33-5 Bisphenol-A bis(diphenyl
phosphate)
BDP A Halogen Free Bisphosphate Flame Retardant Used For
PC/ABS, PPO/HIPS, Epoxy Resins. Synonym BAPP
RDP 57583-54-7 Resorcinol bis(diphenyl phosphate) RDP is a Halogen Free Phosphate Ester Flame Retardant Used For
PC/ABS, PPO/HIPS. Replace FP 600
TCPP 13674-84-5 Tris(chloropropyl)
phosphate
TCPP Flame Retardant Is Used In Production of
Acetate Fiber, PVC, PU Foams, EVA, Phenolics Materials. Replace PCF
APP 68333-79-9 Ammonium
polyphosphate
APP Is An Ammonium Polyphosphate Flame Retardant Mainly Used In
Plastic, Paint, Coating, Laminates And Reinforced Materials.  Replace 484, 486, C60, C30, 3167
/ / Microencapsulated Red
Phosphorus Flame
Retardant
This Product Has High Ignition Point, High Comparative Tracking Index (CTI Value),
No Frosting, No Moving And No Corrosion Of Mould.
MPP 218768-84-4 Melamine
polyphosphate
Melamine Polyphosphate  Flame Retardant Is Mainly Used In
PA And PBT, Especially PA6, PA66.