The present invention is a hydrolytically modified, biodegradable polymer and a method of making a hydrolytically modifiable a biodegradable polymer. In a preferred embodiment, the invention is a method of grafting polar groups onto biodegradable polymers and modified biodegradable polymer compositions...http://www.google.de/patents/US6579934?utm_source=gb-gplus-sharePatent US6579934 - Reactive extrusion process for making modifiied biodegradable compositions
