C - Chemistry – Metallurgy – 08 – G
Patent
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.
Kim Bong Oh
Seo Min-Hyo
Shim Myung Seob
Gowling Lafleur Henderson Llp
Samyang Corporation
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