Poly(ethylene oxide) (PEO) is a multifunctional, water-soluble fine chemical and has lots of usages. The synthesis of PEO wih low-middle relative molecular weight, including the preparation of calcium ammoniate multi-phase catalyst, the polymerization of ethylene oxide and the characterization of products and the design of pilot-scale production were studied in detail in this paper. The conclusions were as follows:
The component of the active substance of the catalyst was affirmed as H2N...Ca-O-CH(CH3)-...