Abstract

Highly active calcium chloride (CaCl 2) doped Zn-Co III double metal-cyanide (Ca-DMC) catalysts were firstly reported. Ca-DMCs presented a very higher polymer yield (>54 kg polymer/g catalyst) at relative low temperature (80–115 °C) toward ring-opening polymerization (ROP) of propylene oxide (PO) than did DMC catalysts without modification.

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