| abstract |
Biodegradable terephthalate copolymers are described comprising the recurring monomeric units shown in formula I, wherein R is a divalent organic moiety; R' is an aliphatic, aromatic or heterocyclic residue; and the molar ratio x:y is between about 1:20 and 20:1, wherein the biodegradable copolymer is biocompatible before and upon biodegradation. Process for preparing the copolymers, compositions containing the copolymers and biologically active substances, articles useful for implantation or injection into the body fabricated from the compositions, and methods for controllably released biologically active substances using the copolymers, are also described. |