One-pot non-isocyanate synthesis of polyurethanes from bisepoxide, carbon dioxide, and diamine

The polyaddition of bis(cyclic carbonate), in situ prepared from bisepoxide and carbon dioxide, and diamine afforded poly(hydroxyurethane) quantitatively. The resulting poly(hydroxyurethane) could be converted in situ to polyurethanes bearing either ester or silyl ether groups in the side chains.