Thermoplastic halogen-free flame retardant formulations

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

C08L 23/10 (2006.01)

Patent

CA 2712555

The present invention is a highly mineral-filled halogen-free, flame-retardant composition made from or containing a polypropylene thermoplastic elastomer, a polypropylene, a metal hydroxide filler, and a polar-monomer-grafted polyolefin elastomer compatibilizer. The invented system has improved tensile strength, improved elongation at break, and low permanent deformation at increasingly high test temperatures. The invention also includes cables and extruded articles prepared from the composition.

La présente invention concerne une composition ignifugeante, exempte d'halogène, hautement chargée par une matière minérale, obtenue à partir d'un élastomère thermoplastique de polypropylène, d'un polypropylène, d'une charge d'hydroxyde métallique et d'un agent de compatibilité élastomère de polyoléfine greffée par un monomère polaire ou contenant ceux-ci. Le système de l'invention a une résistance à la traction améliorée, un allongement à la rupture amélioré et une faible déformation permanente à des températures de test de plus en plus élevées. L'invention concerne également des câbles et des articles extrudés préparés avec la composition.

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