A novel waterborne polyurethane (WPU) emulsion was prepared from isophorone diisocyanate, polyeaprolactone diols, polyether triols and 2,2-dimethylol propionic acid with eleostearic acid monostearate ( EAM ) as modifier. The structure and properties of WPU were characterized by FT-IR, LDSA, centrifuge test, Webster hardness tester, water vapor permeability (WVP) test, water absorption test and bactericidal test, etc. The results showed that the average particle size of WPU emulsion was small and the stability was well when the content of ...