Patent ID: 6166173
Filing Date: 2000-12-26
Classification: A61K,A61L,C08G,Y10S

Abstract:
A biodegradable polymer comprising the recurring monomeric units shown in formula I or II: ##STR17## wherein: X is --O-- or --NR'--, where R' is H or alkyl;M.sub.1 and M.sub.2 are each independently (1) a branched or straight chain aliphatic group having from 1-20 carbon atoms; or (2) a branched or straight chain, oxy-, carboxy- or amino-aliphatic group having from 1-20 carbon atoms;Y is --O--, --S-- or --NR'--;L is a branched or straight chain aliphatic group having from 1-20 carbon atoms;R is H, alkyl, alkoxy, aryl, aryloxy, heterocyclic or heterocycloxy;the molar ratio of x:y is about 1;the molar ratio n:(x or y) is between about 200:1 and 1:200; andthe molar ratio q:r is between about 1:99 and 99:1;wherein said biodegradable polymer is biocompatible before and upon biodegradation.