Environmentally degradable polymeric composition and process...

Details Environmentally degradable polymeric composition and process... Environmentally degradable polymeric composition and process...

C - Chemistry, Metallurgy

08

L

C08L 67/04 (2006.01)

Patent

CA 2641924

The present invention refers to a polymeric composition prepared from a biodegradable polymer defined by polyhydroxybutyrate (PHB) or copolymers thereof, and at least one other biodegradable polymer, such as polycaprolactone (PCL) and poly (lactic acid) (PLA), so as to alter its structure, and further at least one additive of the type of natural filler and natural fibers, and, optionally, nucleant, thermal stabilizer, processing aid, with the object of preparing an environmentally degradable material. According to the production process described herein, the composition resulting from the mixture of the modified biodegradable polymer and additives can be utilized in the manufacture of injected packages for food products, injected packages for cosmetics, tubes, technical pieces and several injected products.

La présente invention concerne une composition polymérique préparée à partir d'un polymère biodégradable constitué par polyhydroxybutyrate (PHB) ou des copolymères de ce dernier; d'au moins un autre polymère biodégradable, tel que le polycaprolactone (PCL) et le poly(acide lactique) (PLA), pour en modifier la structure; d'au moins un additif du type charge naturelle ou fibres naturelles; et éventuellement d'un nucléant, d'un stabilisant thermique, d'un additif de traitement, servant à produire un matériau biodégradable. Selon la méthode de production de l'invention, la composition résultant du mélange du polymère biodégradable modifié et des additifs peut être utilisée pour la fabrication d'emballages moulés par injection pour denrées alimentaires ou d'emballages moulés par injection pour produits cosmétiques, tubes, pièces techniques et divers autres produits.

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