Branched poly (hydroxy acid) and production process thereof

C - Chemistry – Metallurgy – 08 – G

Patent

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C08G 63/08 (2006.01) B32B 27/36 (2006.01) C08J 5/18 (2006.01)

Patent

CA 2757239

Process for manufacturing a polymer by polycondensation of a hydroxy acid, said polymer comprising at least 80% by weight of units that correspond to the hydroxy acid, according to which at least one polyfunctional reactant capable of giving rise to the formation of a three-dimensional polymer network is mixed with the hydroxy acid, and according to which the mixture is subjected to temperature and pressure conditions and for a duration which are all suitable for giving rise to the formation of the network. Poly(hydroxy acid) (PHA) obtainable by such a process.

L'invention porte sur un procédé pour la fabrication d'un polymère par polycondensation d'un hydroxyacide, ledit polymère comprenant au moins 80 % en poids de motifs qui correspondent à l'hydroxyacide, suivant lequel au moins un réactif polyfonctionnel apte à donner lieu à la formation d'un réseau polymère tridimensionnel est mélangé avec l'hydroxyacide et suivant lequel le mélange est soumis à des conditions de température et de pression et pendant une durée qui sont toutes appropriées pour donner lieu à la formation du réseau. L'invention porte également sur un poly(hydroxyacide) (PHA) pouvant être obtenu par un tel procédé.

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