Flame retardant compositions

Details Flame retardant compositions Flame retardant compositions

C - Chemistry, Metallurgy

08

K

C08K 5/16 (2006.01) C08K 5/00 (2006.01) C08L 27/12 (2006.01) C08L 27/18 (2006.01)

Patent

CA 2455841

Organic polymeric substrates, for example polyolefins such as polypropylene, can be made flame retardant by the incorporation of a synergistic mixture of (i.) a sterically hindered amine of the nitroxyl, hydroxylamine, alkoxyamine or hydroxyalkoxyamine class, and (ii.) a fluorinated polyolefin. Advantageously, a further flame retardant may be added, without the need of adding an antimony synergist. The compositions of the invention combine good flame retardant properties with light stability and good mechanical properties.

On peut ignifuger des substrats polymères organiques, par exemple des polyoléfines telles que du polypropylène, en incorporant un mélange synergétique (i) d'un amine à encombrement stérique de la classe nitryle, hydroxylamine, alcoxyamine ou hydroxyalcoxyamine et (ii) d'une polyoléfine fluorée. On peut ajouter avantageusement un autre ignifuge, sans qu'il soit nécessaire d'ajouter un synergiste d'antimoine. Les compositions de cette invention associent de bonnes propriétés ignifuges avec une stabilité à la lumière et de bonnes propriétés mécaniques.

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