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High-molecular-weight poly(propylene carbonate) (PPC) was synthesized using a ZnCo-based double metal cyanide (Co-DMC) catalyst. The catalytic activity reached as high as 60.6kg polymer/g Co-DMC after 10h when the low-molecular-weight polyether polyol initiator was not used. In contrast, production of the by-product propylene carbonate (PC) significantly decreased to below 1.0wt%. Considering the...
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