Biodegradable polymeric blend

Details Biodegradable polymeric blend Biodegradable polymeric blend

C - Chemistry, Metallurgy

08

L

C08L 67/02 (2006.01) C08L 67/04 (2006.01)

Patent

CA 2419146

A biodegradable polymeric blend is provided, which can be produced by extrusion and contains at least one partly aromatic polyester, as well as aromatic and aliphatic blocks. At least 10 % w. of this polymeric blend with the partly aromatic polyester contains one aliphatic polyester based on at least one hydroxycarboxylic acid and/or at least one lactone, the glass transition temperature (TG) of the aliphatic polyester being of at least 50~. This polymeric blend advantageously includes no plastifying agent and, moreover, comprises regenerating materials.

L'invention concerne un mélange biodégradable de polymères obtenu par extrusion et contenant au moins un polyester partiellement aromatique et des blocs aliphatiques et aromatiques. Au moins 10 % en poids de ce mélange avec le polyester partiellement aromatique, contient un polyester aliphatique sur la base d'au moins un acide hydroxycarboxylique et/ou d'au moins une lactone, ce polyester aliphatique possédant un point de transition vitreuse (TG) supérieur à 50·. Ce mélange de polymères ne contient avantageusement aucun plastifiant et, de plus, est constitué par des matériaux pouvant être régénérés.

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