Process for the stabilization of and stabilizer mixtures for...

Details Process for the stabilization of and stabilizer mixtures for... Process for the stabilization of and stabilizer mixtures for...

C - Chemistry, Metallurgy

08

K

C08K 5/098 (2006.01) C08K 5/51 (2006.01) C08L 23/02 (2006.01) C08L 27/08 (2006.01)

Patent

CA 2177385

Plastic mixtures, in particular recycled plastic mixtures, comprising predominantly polyolefins and 0.05-20 % by weight of PVDC can be stabilized against thermo-oxidative degradation by addition of a combination of an organic phosphite or phosphonite and a metal salt of a fatty acid.

Ce procédé de stabilisation contre la dégradation thermo-oxydative des mélanges de plastiques, en particulier des mélanges de plastiques recyclés comprenant de façon prédominante des polyoléfines ainsi que de 0,05 à 20 % en poids de PVDC, consiste à ajouter à ces mélanges une combinaison de phosphite ou de phosphonite organique et d'un sel métallique d'un acide gras.

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