Composite based on polylactic acid and a polyamide, having...

C - Chemistry – Metallurgy – 08 – L

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C08L 67/04 (2006.01) C08L 23/00 (2006.01) C08L 33/06 (2006.01) C08L 77/00 (2006.01)

Patent

CA 2655652

The present invention relates to a composite having improved impact resistance. According to the invention, this composite is obtained from a composition comprising the following polymers: polylactic acid (PLA) which forms the matrix; at least one polyamide forming a dispersed phase within the PLA matrix; at least one functionalized polyolefin (A) comprising alpha-olefin units and epoxy, carboxylic acid or carboxylic acid anhydride units; and, optionally, at least one unfunctionalized polyolefin (B).

Matériau composite à base de polyacide lactique et de polyamide présentant une résistance aux chocs améliorée, son procédé de fabrication et utilisation La présente invention concerne un matériau composite présentant une résistance aux chocs améliorée. Selon l'invention, ce matériau composite est obtenu à partir d'une composition comprenant les polymères suivants; l'acide polylactique (PLA) qui forme Ia matrice, au moins un polyamide formant une phase dispersée dans Ia matrice de PLA, au moins une polyoléfine fonctionnalisée (A) comprenant des motifs alpha oléfine et des motifs époxyde, acide carboxylique ou anhydride d'acide carboxylique, et, de manière optionnelle, au moins une polyoléfine non fonctionnalisée (B), ledit matériau ne comprenant pas de polyoxyméthylène (POM).

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