Polyester and polyamide compositions of low residual...

Details Polyester and polyamide compositions of low residual... Polyester and polyamide compositions of low residual...

C - Chemistry, Metallurgy

08

L

C08L 67/06 (2006.01) B65D 1/02 (2006.01) C08G 63/66 (2006.01) C08K 5/17 (2006.01) C08K 5/32 (2006.01) C08K 5/34 (2006.01)

Patent

CA 2373907

A mixture of a polyester, such as poly(ethylene terephthalate) PET, or a polyamide, and a suitable stabilizer selected from the group consisting of hydroxylamine stabilizers, substituted hydroxylamine stabilizers, nitrone stabilizers and amine oxide stabilizers, when extrusion compounded exhibits a lower residual acetaldehyde content than does polyester or polyamide alone when similarly treated. The invention pertains to any polyester or polyamide used in the manufacture of molded articles, fibers or films, for instance bottles or containers which are used to store consumer materials, for example food, beverages and water.

Divulgation d'un mélange d'un polyester, comme le poly(téréphtalate d'éthylène), ou d'un polyamide et d'un stabilisant approprié, choisi dans le groupe constitué des hydroxylamines, des hydroxylamines substituées, des nitrones et des oxydes d'amines. Ce mélange extrudé présente une teneur résiduelle en acétaldéhyde inférieure à celle d'un polyester ou d'un polyamide seul traité de la même manière. L'invention a pour objet tout polyester ou tout polyamide utilisé pour la fabrication d'articles moulés, de fibres ou de films, par exemple des bouteilles ou des contenants utilisés pour entreposer des produits de consommation, par exemple des aliments, des breuvages ou de l'eau.

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