New wash-resistant Si – N – P flame retardants developed by DTNW in German government innovation project. The AiF-IGF project No. 19617 N has developed new silane-based PIN FRs, containing silicon, phosphorus and nitrogen, using industrially available amino silanes. The FRs were synthesised according to different strategies with either one or two reaction steps. Lab-scale production was then scaled up to 250g. Depending on the FR chemistry, fire tests including DIN EN 15025 protective clothes, FMVSS 302 automotive, DIN 4102-B2 fire performance are passed for cotton, wool, cotton/polyester and cotton/polyamid fabrics with loadings of 3-10 % (w/w) for textile finishing. Fire resistance is maintained after six home laundry wash cycles at 60 °C. Industrial production is now planned with abcr GmbH.
“Neue stickstoff- und phosphormodifizierte Verbindungen für den permanenten Flammschutz von Textilien via Sol-Gel-abcr GmbH GmbHtion”, W. Ali et al., DTNW (Deutsches Textilforschungszentrum Nord-West), 2020 http://dx.doi.org/10.13140/RG.2.2.23821.36326
“N-P-Silane” http://www.dtnw.de/forschungsvorhaben/abgeschlossene-forschungsvorhaben/n-p-silane/