Use of polyalcohols as polymer stabilisers

Details Use of polyalcohols as polymer stabilisers Use of polyalcohols as polymer stabilisers

C - Chemistry, Metallurgy

08

K

C08K 5/15 (2006.01) C08K 5/151 (2006.01) C08L 57/08 (2006.01)

Patent

CA 2275416

Natural cyclic polyalcohols such as polyfructoses and dehydration products of sugar alcohols can be used for stabilising thermoplastic polymers, at a ratio of 0.001 - 5 phr of polyol with respect to the polymer. The cyclic polyol is in particular inulin or sorbitan. The polymer to be stabilised is in particular PVC, PE, PP or a halogenated rubber.

Selon l'invention, on peut utiliser des polyalcools cycliques naturels, tels que des polyfructoses et des produits de déshydratation d'alcools de sucre, pour stabiliser des polymères thermoplastiques, selon un rapport de l'ordre de 0,001 à 5 phr de polyol par rapport au polymère. Le polyol cyclique est notamment de l'inuline ou du sorbitanne. Le polymère à stabiliser est notamment du polychlorure de vinyle, du polyéthylène ou du polypropylène ou un caoutchouc halogéné.

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