Polyesters containing alkylene oxide blocks as drug delivery...

Details Polyesters containing alkylene oxide blocks as drug delivery... Polyesters containing alkylene oxide blocks as drug delivery...

C - Chemistry, Metallurgy

08

G

167/166, 400/201

C08G 63/66 (2006.01) A61K 9/20 (2006.01) A61K 9/22 (2006.01) A61K 9/70 (2006.01) C08G 63/64 (2006.01)

Patent

CA 1283988

POLYESTERS CONTAINING ALKYLENE OXIDE BLOCKS AND THEIR USE AS DRUG DELIVERY SYSTEMS ABSTRACT OF THE DISCLOSURE The invention is an ABA or AB block copolymer as a well as slow release drug delivery system comprising a drug and the ABA or AB block copolymer wherein one block (B) is a poly (alkylene oxide) and the other blocks (A) are comprised of degradable random copolymers of (1) the cyclic ester of an alpha-hydroxy acid and (2) a second cyclic ester monomer with the proviso that the second cyclic ester monomer is not the same as the first cyclic ester.

546072

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