Synthesis of poly(propylene carbonate) polyols from carbon dioxide and propylene oxide

Poly(propylene carbonate) polyols(PPC) was produced by the copolymerization of CO2 and propylene oxide using double metallic catalyst.Influence of catalyst,molecular regulator and CO2 was discussed.It is found that molecular weight of PPC decreased with the addition of molecular regulator and showed liner relation with it.It is also revealed that propylene carbonate can be produced in a unzipping way.