FLAME RETARDANTS | ADDITIVES


thermal stability, a key requirement when assessing the recyclability of these materials. “Due to the excellent thermal stability of Saytex Alero, the data presented in the radar chart (Figure 1] demonstrates that formulations containing the polymeric BFR material can be mechanically recycled through multiple passes with minimal impact on material properties,” says Kyle Bodine, Senior Director of Albemarle’s Specialties Applications and Custom- er Technical Service, “Albemarle has conducted mechanical recycling studies with Saytex Alero in multiple resin systems including polyolefin and styrenic resins that all confirm this outcome.”


Albemarle says its data also demonstrates that its Saytex 8010 product, an ethane-bis- pentabromo- phenyl (EBP), is acutely nontoxic to animals or aquatic life, which it says some PFRs cannot claim. “In addition to health and toxicology criteria, many PFRs have higher carbon footprint than competitive BFRs based on our analysis…PFRs may release more greenhouse gas emissions because they are often more energy intensive to produce than BFRs,” says Wesley Hamilton, Albemarle’s Chief Technol- ogy Officer – Specialties. “Albemarle’s R&T Team has demonstrated that even minor structural differences can play a large role in altering key properties such as degradation,” says Bridget Goode, VP


Figure 1: Radar chart showing how Albemarle’s new Saytex Alero brominated flame retardant performs after multiple recycling passes in polypropylene


of Albemarle’s Fire Safety Solutions business. “Comparing the newer BFRs or grouping all BFRs into one class disregards the scientific evidence and contradicts a report by the National Academy of Sciences, Engineering, and Medicine,” she says. The National Academy offered guid- ance to the Consumer Product Safety Commission (CPSC) on how to conduct a hazard assessment of nonpolymeric, additive organohalogen flame retardants (OFRs). The report identified fourteen subclasses that CPSC can use to conduct a class-based hazard assessment of OFRs. Albemarle has been an innovator in


fire safety solutions for decades, according to Gregg Ublacker, Senior Director of Global Product Steward- ship. “The company’s newest FRs are being developed to meet strict fire safety standards, without sacrificing product performance or compromis- ing environmental and/or human health,” he says. Actilox high temperature barrier (HTB) is a new class of flame-retardant high temperature barrier functional fillers from Nabaltec that generate strong thermal barrier effects in electric vehicle battery housings based on thermoplastic or thermoset composites. According to the com- pany, the development of EV batteries with a higher energy density has increased fire safety concerns and prompted a trend towards higher flame-retardant filling levels and new


sam@generalextrusion.com


yue.lizcn@gmail.com


dingkechen@hotmail.com


www.masjtr.com www.njjdr.com Source: Albemarle www.compoundingworld.com December 2023 | COMPOUNDING WORLD 15


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