C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 63/08 (2006.01) A61K 9/16 (2006.01) A61K 47/34 (2006.01) C08G 63/90 (2006.01) C08L 67/04 (2006.01)
Patent
CA 2563957
The invention relates to a procedure for purifying low molecular weight polylactic acid polymers by use of low temperature phase separation of the polymers in methanol, ethanol or isopropanol based solvents, compositions comprising the polymers and methods of using the same.
L'invention est relative à une procédure de purification de polymères d~acide polylactique de faible poids moléculaire à l~aide d~une séparation de phase à basse température des polymères dans des solvants à base de méthanol, d~éthanol ou d~isopropanol, des compositions contenant les polymères et des procédés d~utilisation de celles-ci.
Goldenberg Merrill Seymour
Gu Jian Hua
Huang Yujin
Amgen Inc.
Gowling Lafleur Henderson Llp
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