Stabilized recycled plastics

Details Stabilized recycled plastics Stabilized recycled plastics

C - Chemistry, Metallurgy

08

K

C08K 5/34 (2006.01) C08J 11/06 (2006.01) C08K 5/00 (2006.01) C08K 5/3492 (2006.01) C08K 13/02 (2006.01)

Patent

CA 2198494

The invention relates to stabilized recycled plastics, which can be obtained from domestic, commercial and industrial waste or valuable material collections, comprising a macrocyclic compounds containing a radical of formula (I) or (II), in the macrocycle or in a side group of the macrocycle, where the macrocycle comprises at least 8 atoms and in which the substituents R, independently of one another, are methyl, ethyl or propyl, or two radicals R on the same carbon atom are, together, a pentamethylene radical, and a is the number 0, 1 or 2. The invention also relates to a process for the stabilization of recycled plastics and to the use of the above macrocyclic compounds as stabilizer.

L'invention concerne des plastiques stabilisés recyclés qui proviennent de rebuts domestiques, commerciaux et industriels ou de la récupération de matières de valeur, et qui comprennent un composé macrocyclique contenant un radical de la formule (I) ou de la formule (II) dans le macrocycle ou dans une groupe latéral de celui-ci, ledit macrocycle comprenant au moins 8 atomes, formules dans lesquelles les substituants R représentent, indépentamment l'un de l'autre, méthyle, éthyle ou propyle, ou deux radicaux R sur le même atome de carbone représentent ensemble un radical pentaméthylène, et a représente le nombre 0, 1 ou 2. L'invention concerne également un procédé de stabilisation de plastiques recyclés ainsi que l'utilisation des composés macrocycliques ci-dessus mentionnés en tant qu'agents de stabilisation.

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