Highly pure amphiphilic copolymer comprising hydrophobic...

Details Highly pure amphiphilic copolymer comprising hydrophobic... Highly pure amphiphilic copolymer comprising hydrophobic...

C - Chemistry, Metallurgy

08

G

C08G 63/664 (2006.01) A61K 47/34 (2006.01) C08G 63/90 (2006.01) C08L 67/04 (2006.01)

Patent

CA 2709967

Disclosed are a highly pure amphiphilic block copolymer including a hydrophobic polymer block of a po Iy (.alpha.-hydroxy acid), and a method for preparing the same. The method for preparing a highly pure amphiphilic block copolymer including a hydrophobic polymer block of a po Iy (.alpha.-hydroxy acid) includes removing .alpha.-hydroxy acid, lactone monomers thereof, oligomers thereof and an organometal catalyst in polymerizing the amphiphilic block copolymer.

L'invention concerne un copolymère bloc amphiphile de haute pureté comprenant un bloc polymère hydrophobe issu d'un poIy(a -hydroxy acide), et son procédé de préparation. Le procédé de préparation dudit copolymère bloc amphiphile de haute pureté comprenant un bloc polymère hydrophobe issu d'un poIy(a-hydroxy acide) consiste à éliminer l'a-hydroxy acide, ses monomères de lactone, ses oligomères et un catalyseur organométallique lors de la polymérisation du copolymère bloc amphiphile.

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