| abstract |
A biodegradable, biocompatible polymer, comprising a combination of monomeric repeating units having structures I and IV wherein R9 is an alkyl, aryl or alkylaryl group with up to 18 carbon atoms having a pendant benzyl carboxylic acid ester group and; nR12 is an alkyl, aryl or alkylaryl group with up to 18 carbon atoms having a pendent carboxylic acid ester group selected from the group consisting of straight and branched alkyl and alkylaryl esters containing up to 18 carbon atoms and ester derivatives of biologically and pharmaceutically active compounds covalently bonded to said polymer, provided that said ester group is not a benzyl group or a group that is removed by hydrogenolysis. |