Abstract
Variouskindsofpolyhydroxyurethanesweresynthesizedbypolyadditionofbis(cycliccarbonate)sanddiaminetostudythefilmproperties.Thetensilestrengthandelongationpercentageofthepolyhydroxyurethanefilmswerevariedwithdryingconditionsprobablyduetoabsorbedwaterservingasaplasticizer.Thewaterabsorptionpercentagesandthermaldecompositiontemperaturesofthepolyhydroxyurethanefilmswere>30%and32~88℃higherthanthoseofcommercialpolyurethanes,respectively.