Fire retardant compositions

C - Chemistry – Metallurgy – 08 – K

Patent

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Details

C08K 3/34 (2006.01) C08K 3/10 (2006.01) C08K 9/04 (2006.01) C08L 27/06 (2006.01)

Patent

CA 2371300

A polymer composition is provided that comprises a polymer and a synergistic flame retardant additive combination which comprises a nano-clay and a second filler. The second filler may be a material with known flame retardant properties, an inert filler or a combination of the same. The preferred nano- clay is Cloisite, the preferred second filler is aluminium trihydroxide. The presence of this flame retardant additive combination in polymers increases the strength of the char that forms during combustion. The formation of a strong char creates a barrier to ignition of the underlying material, for example electrical cables that have been provided with a coating of the polymeric composition.

L'invention porte sur une composition à base de polymère comprenant un polymère et un additif ignifuge synergique consistant en une nano argile et une deuxième charge par exemple un matériau à propriétés ignifuges connues, une charge inerte ou leur combinaison. La nano argile préférée est la Cloïsite et la deuxième charge préférée est le trioxyde d'aluminium. La présence de ces ignifuges dans le polymère accroît la résistance du charbon se formant pendant la combustion, dont la forte résistance crée une barrière vis à vis de l'inflammation des matériaux sous-jacents, par exemple des câbles électriques revêtus de la susdite composition.

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