Stabilized filled polyolefins

C - Chemistry – Metallurgy – 08 – K

Patent

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Details

C08K 5/34 (2006.01) C08K 5/3435 (2006.01) C08K 5/3462 (2006.01) C08K 5/3492 (2006.01) C08K 13/02 (2006.01) C08L 23/02 (2006.01)

Patent

CA 2198758

The invention relates to stabilized filled polyolefins comprising a filler and a macrocyclic compound which contains a radical of formula (I) or (II) in the macrocyclic structure or in a side-group, said macrocyclic structure consisting of at least 8 atoms and wherein the substituents R are each independently of one another methyl, ethyl or propyl, or two substituents R at the same carbon atom are together also a pentamethylene radical, and a is 0, 1 or 2. The invention also relates to a method of stabilizing filled polyolefins and to the use of the macrocyclic compounds as stabilisers.

L'invention concerne des polyoléfines stabilisées chargées comprenant une charge ainsi qu'un composé macrocyclique qui contient un radical de la formule (I) ou de la formule (II), dans la structure macrocyclique ou dans un groupe latéral, cette structure comprenant au moins 8 atomes, formules dans lesquelles les substituants R représentent chacun indépendamment l'un de l'autre méthyle, éthyle ou propyle, ou bien deux substituants R sur le même atome de carbone représentent ensemble un radical pentaméthylène, et a vaut 0, 1 ou 2. L'invention concerne également un procédé de stabilisation de polyoléfines chargées ainsi que l'utilisation de composés macrocycliques en tant qu'agents de stabilisation.

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