Biodegradable polyester mixture

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

C08L 67/00 (2006.01) C08F 291/00 (2006.01) C08L 3/04 (2006.01)

Patent

CA 2533481

The invention relates to biodegradable polyester mixtures comprising: between 5 and 80 wt. %, in relation to the total weight of the constituents i to ii, of at least one polyester based on aliphatic and aromatic dicarboxylic acids and aliphatic dihydroxy compounds (constituent i); between 20 and 95 wt. %, in relation to the total weight of the constituents i to ii, of at least one renewable raw material (constituent ii); and between 0.1 and 15 wt. %, in relation to the total weight of the constituents i to ii, of a constituent iii that is suitable for forming covalent bonds both with constituent i and with constituent ii. The invention also relates to methods for producing biodegradable polyester mixtures, the use of biodegradable polyester mixtures for producing blends, moulded parts, films or fibres, in addition to blends, moulded parts, films or fibres comprising biodegradable polyester mixtures.

La présente invention concerne des mélanges de polyester biodégradables qui comprennent de 5 à 80% en poids, par rapport au poids total des composants i à ii, d'au moins un polyester à base d'acides dicarboxyliques aliphatiques et aromatiques et d'un composé dihydroxy aliphatique (composant i), de 20 à 95% en poids, par rapport au poids total des composants i à ii, d'au moins une matière première renouvelable (composant ii) et de 0,1 à 15% en poids, par rapport au poids total des composants i à ii, d'un composant iii qui est conçu pour former des liaisons covalentes aussi bien avec le composant i qu'avec le composant ii. La présente invention concerne également des procédés pour produire des mélanges de polyester biodégradables, l'utilisation de mélanges de polyester biodégradables pour produire des mélanges, des pièces moulées, des films ou des fibres, ainsi que des mélanges, des pièces moulées, des films ou des fibres contenant des mélanges de polyester biodégradables.

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