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October 30, 2019

Fire code failures cost developer $ 10M

US$ 10 million damages and costs were awarded in 2017 to purchasers of residential property in the Grandview Riverwalk, Port Imperial development, New York State. A court has now decided that this must be paid entirely by the developer, a subsidiary of Hovnanian Enterprises, not by the architects RTKL.

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FRETWORK textile FR code of practice moves forward

The Flame Retarded Textiles Network, UK (FRETWORK) has launched a Primary Authority partnership with Nottingham County Council Trading Standards to enable participating companies to benefit from formally assured advice.

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Delhi action on school fire safety

The Delhi city area government, India, has issued a notice to 241 schools for failing fire safety regulations.

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Fire fighters call Amazon to stop selling unlisted alarms

National fire service leaders and other stakeholders are supporting a “Vision 20/20” project call to ask Amazon and other e-commerce companies to stop selling unlisted smoke and carbon dioxide alarms.

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New water soluble phosphazene for textiles

Poly- and cyclo- phosphazenes are recognised effective PIN flame retardants, but to date are not available as water soluble and permanent systems for textiles.

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Systemic analysis of P-N flame retardant design

Four comparable phosphorus-containing compounds were synthesised, each with one central P atom and three hexenyl groups: an amide (P bonded to 3xN), a diamidate (P bonded to 2xN, 1xO), an amidate (P bonded to 1xN, 2xO) and a phosphate (P bonded to 3xO).

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Ferrocene polymer synergist for APP

A polymer (poly((3,3’-diphenyl diacetylethylenediamino)-1,1’-ferrocene) = PDPFDE) was synthesised linking ferrocene, aromatic carbon rings and the nitrogen compound ethylenediamine.

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Melamine – bio-sourced phytate FR for polypropylene

Melamine and phytic acid (a molecule naturally found in plants) were reacted in aqueous solutions. The six phosphates in phytic acid reacted with six melamines, and two-dimensional nanoflakes were formed in drying (MEL-PA).

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P-ester / magnesium synergy for wood FR

Cyclic phosphate ester was reacted with magnesium hydroxide (1 – 6 %) and then tested with melamine formaldehyde and pentaerythritol (at ratios 1:1 to 1:4) as a flame retardant coating on 4 mm plywood (250 g/m2 coating).

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Silica aerogel as FR and smoke suppressant

Polyurethane insulation foam (PUF) was surface treated with silica (SiO2), by acid and alkali hydrolysis, then lyophilised to generate a silica aerogel at 13 – 33% w/w loading on the foam.

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October 15, 2019

FRPM Conference 2019

FRPM 2019, the 17th conference on Flame Retardant Polymeric Materials, brought together in Turku, 26-28 June 2019, some 220 participants worldwide. The conference showcased a wide range of R&D int...

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Environmental challenges

Steve Hollins, ECHA (European Chemical Agency), suggested that industry should be proactive in substituting chemicals which are flagged as possibly problematic on any of the different ECHA ‘early warning’ lists, such as PACT (public activities coordination tool), CoRAP, or have been assessed in an RMOA (risk management option analysis).

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Phosphorus FRs

Sabyasachi Gaan, EMPA Switzerland, presented development of DOPO derivative phosphorus PIN FRs for use in synthetic and bio-based polymers, from research through to industrial production: DOPO phosphphonamides (EDA-DOPO = 6,6'-(Ethane-1,2-diylbis(azanediyl))bis(dibenzo[c,e][1,2]oxaphosphinine-6-oxide)), today REACH registered and entering commercialisation by Metadynea; DOPO-PEPA (PEPA = 1-oxo-4-hydroxymethyl-2,6,7-trioxa-l-phosphabicyclo[2.2.2] octane), REACH registration underway, for application in polyester and polyolefins, under development with JET-Aviation for non-halogenated fire safety of wood products for aviation applications; and triazine DOPO, under development with BRUAG.

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Research into bio-based PIN flame retardants

Xin Wang, University of Science and Technology of China, presented proposed PIN FRs derived from bio-based cardanol, tested in epoxies, including by reaction with organic phosphorus chemicals such as phosphaphenanthrene or benzoxazine, with zirconium phosphate, in combination with boron graphene nanosheets and in layered double hydroxides.

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Researching new FR coating technologies

Bartosz Weclawski, University of Bolton, UK, presented research into use of plasma technology based on an atmospheric pressure plasma and high power UV laser. Multiplexed Laser Surface Enhancement (MLSE from MTIX Ltd., UK) can bond fire retardant precursors physico-chemically and even covalently into a fabric, followed by plasma/UV, so avoiding the conventional wet processing cycles.

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Fire safety for wood and timber

In the wood and timber sectors, Teknos’ industrial customers today are looking for ‘green’ coating and treatment solutions: water based, VOC emissions free, non-halogenated and if possible bio-based. In the construction sector, demand for fire safety treatments is increasing, especially for public buildings, with today also demand for low smoke (Euroclass).

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Fire safety for polyurethanes

Rolf Albach, Covestro Covestro sees fire safety as an increasing challenge in all applications of plastic foams, in particular in buildings, where such foams offer the best insulation performance, cost effectiveness and adaptability of materials available.

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Innovative FRs for textiles and fibre-compounds

Jelena Vasiljević, University of Ljubljana, presented tests of three DOPO derivatives as additive PIN FRs in polyamide 6 fibres. The FRs were added in the caprolactam melt before polyamide polymerisation.

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Recycling flame retardant plastics

Jürgen Troitzsch, Fire and Environmental Protection Services, summarised the opportunities for the circular economy for plastics and implications for flame retardants.

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Challenges for FRs in applications and products

Flame retardants are of increasing interest to Industry, in response to a worldwide increase in fire safety and environment awareness. Sustainability is a key requirement in fire safety, meaning environmentally friendly products, based on green chemistry, green production, and compatible with recycling.

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Research into new flame retardant solutions

De-Yi Wang, IMDEA Materials Institute, Madrid, presented different approaches to develop specific nano-materials and architectures as PIN flame retardants in different polymers and the complexity of understanding the mechanisms involved.

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Fire testing and modelling

Richard Lyon, US Federal Aviation Administration (FAA), presented work underway by an FAA/industry working group to use milligrams of sample in a microscale combustion calorimeter to compare the fire performance of components (e.g., adhesives, films, potting compounds, fibers, etc.) used in aircraft cabin materials.

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Prizewinning posters

From the more than 70 posters presented at FRPM 2019, the scientific committee designated three prizewinners, summarised below:

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Prizewinners’ visions for flame retardants tomorrow

Pinfa asked the poster prizewinners at FRPM to express their vision of challenges for fire safety and for flame retardants for tomorrow.

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