Amorphous-crystalline block copolymers

Details Amorphous-crystalline block copolymers Amorphous-crystalline block copolymers

C - Chemistry, Metallurgy

08

G

C08G 63/16 (2006.01) C08G 81/00 (2006.01) C08L 67/00 (2006.01)

Patent

CA 2480539

Biodegradable block copolyesters obtained from crystalline blocks and amorphous blocks, wherein the repeating units of both blocks are of the dicarboxylic acid/diol type. Said copolyesters are characterized by a melting temperature, equal to or less than 15% lower than the starting crystalline polymer temperature, and by increased tenacity that makes them particularly useful in the production of different types of objects.

L'invention concerne des copolymères blocs biodégradables obtenus à partir de blocs cristallins et de blocs amorphes, les unités de répétition desdits blocs étant de type acide dicarboxylique/diol. Lesdits copolyesters sont caractérisés par une température de fusion inférieure ou égale à une température inférieure de 15 % à la température de début de fusion du polymère cristallin, et par une ténacité améliorée qui les rend particulièrement utiles dans la production de différents types d'objets.

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