Patent ID: 6987160
Filing Date: 2006-01-17
Classification: C08G

Abstract:
1. A thermoplastic polyurethane comprising a polyaddition product of a liquid polyethercarbonate diol with a diisocyanate and a chain extender, wherein the liquid polyethercarbonate diol is a reaction product of a carbonate compound with a polyether diol having (1) structural units (a) represented by formula (I) and further having (2) structural units (b) represented by formula (II) or structural units (c) represented by formula (III) or structural units (b) represented by formula (II) and structural units (c) represented by formula (III): the units (b) being present in an average number (n) of moles of 0 to 5 per mole of the units (a), the units (c) being present in an average number (m) of moles of 0 to 5 per mole of the units (a), and the total average number (n+m) of moles of the units (b) and (c) being more than 1 but not more than 5, per mole of the units (a).