1. Department of Chemistry and INSTM Research UnitUniversity of Pavia Via Taramelli 12 27100 Pavia Italy
2. Research Center for Renewable Energies and EnvironmentIstituto Donegani, Eni Spa Via Fauser 4 28100 Novara Italy
3. New Polyurethane Technologies s.r.l. Via Stazione 12 27030 Villanova D'ardenghi, Pavia Italy