STABILISING COMPOSITION FOR HALOGENATED POLYMERS COMPRISING A UNSATURATED HETEROCYCLIC COMPOUND

The invention concerns a stabilising composition for halogenated polymer comprising at least a compound of formulae (I) and/or (II), wherein: X, Y, Z, identical or different, represent an oxygen atom, a nitrogen atom, a sulphur atom, or a phosphorus atom; R1 represents a radical comprising 1 to 20 carbon atoms; R2 represents a hydrogen atom, a radical comprising 1 to 20 carbon atoms, a -COR radical; R1 and R2 are optionally mutually bound so as to form a cycle; R3 and R4, identical or different, represent a hydrogen atom, a radical comprising 1 to 20 carbon atoms; n = 1 depending on the valence of X, m = 0 to 2 depending on the valence of Y; p = 0 to 2 depending on the valence of Z; q is an integer between 1 and 10, preferably between 1 and 4. El objeto de la presente invencion es una composicion estabilizadora para polímeros halogenados, que comprende uno o más compuestos con al menos una insaturacion etilénica (C=C) y al menos un compuesto heterocíclico.