Stabilising halogenated polymers with pyrroles or...

Details Stabilising halogenated polymers with pyrroles or... Stabilising halogenated polymers with pyrroles or...

C - Chemistry, Metallurgy

08

K

C08K 5/3415 (2006.01) C08K 5/3432 (2006.01) C08K 5/3462 (2006.01)

Patent

CA 2414821

The invention concerns a method for stabilising halogenated polymers using at least a compound selected among pyrroles or derivatives bearing in particular in the nitrogen .alpha., a carboxylic function in acid or salified form, or an aryl radical optionally substituted. The invention slao concerns a stabilising composition comprising at least a pyrrole or derivative and at least an additive selected among amino-uracyls, dihydropyridines or mixtures thereof.

La présente invention a pour objet un procédé de stabilisation de polymères halogénés mettant en oeuvre au moins un composé choisi parmi les pyrroles ou dérivés portant notamment en .alpha. de l'azote, une fonction carboxylique sous forme acide ou salifiée, ou un radical aryle éventuellement substitué. L'invention a de même pour objet une composition stabilisante comprenant au moins un pyrrole ou dérivé et au moins un additif choisi parmi les amino- uracyles, les dihydropyridines ou leurs mélanges.

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