Posted on 12/06/2017 in News 32 2017

Glade Squires, OMYA (distributor for Italmatch), presented new PIN FRs based on mineral phosphites (magnesium, calcium, aluminium). These products offer a high phosphorus content and combine two flame retardant mechanisms: water release and polyphosphoric acid which contributes to intumescence and char formation.

Effectiveness is improved by combining forms of phosphorus at different valent states. UL94-V0 was achieved in a number of tested polymers (polypropylene, polyethylene HDPE – LDPE – LLDPE, EVA) at loadings of 22-32%. Blooming (migration) was not detectable after 42 days and corrosion of processing equipment was considerably lower than a reference halogenated FR system.

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