Reinigung von Polyolen, die unter Verwendung von Doppelmetallcyanidkomplexkatalysatoren hergestellt wurden.

摘要

A method for removing double metal cyanide complex catalyst residue from polyols using alkali metal hydrides is disclosed. In one embodiment, the catalyst residue is converted into an insoluble ionic metal species and separated by filtration using magnesium or aluminum silicate to facilitate separation.