Processes for isolating, formulating, and shaping macrocyclic oligoesters were developed which allow efficient production of macrocyclic oligoesters substantially free from solvent, which may include additives, fillers, and catalysts....http://www.google.es/patents/US7666517?utm_source=gb-gplus-sharePatente US7666517 - Isolation, formulation, and shaping of macrocyclic oligoesters
Isolation, formulation, and shaping of macrocyclic oligoesters