MARK F. SONNENSCHEIN, PHD, is research fellow with The Dow Chemical Company. He is inventor of Dow's LESATM (Low Surface Energy Adhesive), Voranol VorativTM polyurethane polyol, HermesTM thermoplastic polyurethane elastomer, RenuvaTM seed oil derived polyol, Voranol 223-060LMTM polyol, and numerous other technologies.