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April 8, 2022

Debate on EPA risk conclusions on HBCD

US EPA’s conclusion on risks of the brominated FR, HBCD, faces questions on “whole-chemical” approach.. The EPA’s final Risk Assessment of hexabromocyclododecane and the cyclic aliphatic bromide cluster (HBCD), December 2021, see pinfa Newsletter n°135, concludes impacts on aquatic plants, fish embryos, aquatic invertebrates, earthworms and priority human health impact on the thyroid hormone.

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US’ grim sequels to Grenfell

Two recent fires in public housing in the US, leaving 29 dead lead to calls for reform in fire safety regulations and funding.17 people died in the Twin Parks North West public housing building, in th...

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Increasing threat of wildfires

UNEP predicts global increase of extreme wildfires and recommends ecosystem management and asset protection. Uncontrollable wildfires will increase, even in regions previously unaffected, because of climate change, land-use and population change, resulting in significant climate emissions, particulates and toxic smoke.

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Flame Retardancy Polymer Science

New 470-page book on fire analysis principles and applications inc. flame retardancy, toxicity, standards and regulations. Addresses techniques for characterisation of fire and flame behaviour and smoke toxicity, laboratory testing techniques, industrial aspects of fire analysis.

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Growth in chemical plastics recycling

Industry experts AMI expect fast growth in chemical plastics recycling to complement mechanical recycling. Plastics use and waste, especially in packaging, continues to grow, even in Europe. Mechanical recycling capacity is insufficient. Plastic use and waste per inhabitant increased nearly 25% in Europe 2009-2019, with some 30 million tonnes of plastic waste produced of which only 41% recycled by 2021.

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Mechanical recycling of PIN FR polymers

A TU Darmstadt thesis suggests that PIN FRs are not an obstacle to mechanical recycling of thermoplastics. Mineral, nitrogen and phosphorus based PIN flame retardants (ATH, sepiolite, aluminium diethylphosphinate, piperazine pyrophosphate, phosphate ester, APP, melamine cyanurate) were tested in various thermoplastics: polypropylene, polyethylene, polyester, polycarbonate/ABS blend, including with glass fibres and stabilisers.

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Phosphorus PIN FR improves PET recycling

Two phosphorus PIN FRs show to protect polymer properties in recycling (multiple re-extrusion cycles) of PET. Poly(ethylene terephthalate) (PET), a polymer widely used for films and textiles, was tested pure and flame retarded with DOPO-PEPA (5%) or with a phosphate ester (3%).

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FRs and solvent chemical recycling

Different solvents were tested for chemical recycling of mixed E&E waste showing recovery of polymers and removal of FRs. Mixed, shredded E&E plastic waste was provided by a commercial waste recycler in the USA, after mill beating and metal separation.

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Halogenated FRs in China recycled plastics

Based on measurements in plastics samples, tonnages of halogenated FRs in recycled plastics in China were estimated. Total levels of twelve halogenated flame retardants (HFRs)* were measured in 23 samples of recycled plastics, manufactured in five Chinese provinces. Mean total HFR concentrations were approx. 4 – 60 µg/kg for different recycled polymers tested**.

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PIN compounds to recycle polyurethanes

Phosphorus, nitrogen and inorganics used in polyurethane chemical recycling produce PIN flame retardant recycled PUR. Glycolysis is the most widespread route for chemical recycling of polyurethanes (PUR). Glycols or glycerol (which can be bio-derived), with catalysts, are used as depolymerising agents (usually at around 180 to 240°C).

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PIN FR recycled denim fire blocks

Denim cotton fabric can be recycled using PIN flame retardants to produce composite boards for fire compartmentation. The world produces some 150 million t/y of textile waste.

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UV cured PIN FR coating

Texas A&M scientists propose phosphorus-based one-dip UV cured fire protective coatings for wood and other materials. The new coating presented at the ACS (American Chemical Society) conference uses an aqueous solution of hydroxyethyl methacrylate phosphate (HMP) monomer, polyethylenimine (PEI) polymer and a the photoinitiator TPO.

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Polyphosphonate obtains GreenScreen®

pinfa member FRX Polymers’ polymeric phosphorus PIN FR GreenScreen 3 Benchmark recognises safety and non-toxicity. GreenScreen is a leading ESG (Environmental, Social, and Governance criteria), referenced by mainstream labelling organisations, for example the TCO label (see above).

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PIN FR Fabric-over-Foam EMI gaskets

Laird (Dupont group) offers non-halogenated flame retardant EMI (electromagnetic interference) gaskets. With roots back to 1824, and after acquisitions including Emerson & Cuming, BMI, Steward, and Thermagon, Laird Performance Materials is today part of Dupont and specialises in materials for protection of electronic devices from harmful heat and disruptive electromagnetic interference

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Silicon phosphorus nitrogen FR for PLA

A silicon polyphosphoramide was synthesised and tested as a PIN flame retardant for bio-based polylactide plastic.

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Iron alginate bio-based PIN FR for epoxy

Iron alginate at 8% w/w in epoxy resin halved both peak heat release rate and smoke release rate in epoxy. Iron alginate was produced by aqueous reaction of sodium alginate, which can be extracted from marine plants, with the ferric salts, then dried, pulverised and mixed into epoxy resin during curing.

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March 7, 2022

EU consultation on RoHS

To 14th March 2022. Questions whether RoHS Directive should be maintained, updated, tightened, repealed or replaced.

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New York Br-FR ban in TVs amended

The NY ban on brominated FRs in TV/display stands and casings now requires notification of any organohalogen FRs.

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Consultation on supply chain transparency

To 25th March, Canada, consultation on information and labelling on chemicals in products, including FRs in furniture

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EU EcoDesign sells TVs in the Americas

‘Best Buy’ announces EU TV EcoDesign criteria for its leading TVs, so excluding halogenated FRs from enclosures and stand. The company is one of the world’s biggest electronics retailers with nearly US$50 billion turnover and nearly 1 200 stores worldwide.

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UK businesses fail on fire safety

Survey by equipment & servicing company JLA says UK companies do not ensure fire safety for sites, staff and visitors.

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WWF on chemical recycling of plastics

NGO says top priorities are to reduce and reuse, and chemical recycling must show verifiable, positive carbon footprint.

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pinfa Annual Report 2021

An active year for pinfa in Europe & worldwide: five new members, strategy and advocacy, new communications tools.

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Recycling and perspectives for FRs

pinfa has launched an analysis of how recycling regulation and technologies will offer opportunities for PIN flame retardants.

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