Synergistic combinations of phenolic antioxidants

Details Synergistic combinations of phenolic antioxidants Synergistic combinations of phenolic antioxidants

C - Chemistry, Metallurgy

09

K

C09K 15/08 (2006.01) C08K 5/00 (2006.01) C08K 5/13 (2006.01) C08K 5/134 (2006.01)

Patent

CA 2399131

The invention relates to synergistic combinations of certain phenolic antioxidants in thermoplastic polymers, especially in polyolefin pipes and other thermoplastic molding materials which are in prolonged contact with water. The instant combinations lead to better resistance against oxidative degradation as measured in terms of oxidation induction times (OIT), color and other technically important parameters as known in the art.

Combinaisons synergiques de certains antioxydants phénoliques dans des polymères thermoplastiques, en particulier dans des tuyaux en polyoléfine et d'autres matières moulées thermoplastiques destinées à se trouver en contact prolongé avec de l'eau. Lesdites combinaisons permettent d'obtenir une meilleure résistance contre la dégradation oxydative, mesurée en termes de période nécessaire pour l'induction de l'oxydation, de couleur et d'autres paramètres connus importants sur le plan technique.

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