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  • 1 Department of Chemical Technologies and Environment, Faculty of Industrial Technologies, University of Trenčín, 020 01, Púchov, Slovakia
  • 2 Novácke chemické závody, a.s., 972 71, Nováky, Slovakia
  • 3 Department of Engineering, University of New Brunswick, Saint John, NB, E2L 4L5, Canada
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Abstract

A double metal cyano (DMC) catalyst is very effective for ring opening polymerization of propylene oxide (PO). The characteristics of the DMC complex were studied by Fourier transform infrared spectroscopy (FTIR) and thermogravimetry (TG). DMC complex generally result in a significant reduction of monols in the polyol production process. DMC catalyst is characterized by an approximately 1000 times higher activity compared to the conventional KOH catalyst. Disadvantages of the conventional KOH process are long reaction times, costly work-up procedures to remove the base catalyst and the formation of undesired unsaturated by-products (so called “monols”) especially in the preparation of long chain polyether polyols.

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