Verfahren zur Abtrennung von Heteropolyverbindungen aus Polyethern, Polyestern und Polyetherestern

摘要

A process is disclosed for extracting heteropolycompounds from mixtures that contain polymers, namely polyethers, polyesters and/or polyether esters, a protic component and heteropolycompounds. The process is characterised in that the protic component is removed from the mixture and the heteropolycompounds that settle as a separate phase are then extracted. The remaining polymer phase is preferably brought into contact with a solid adsorbent capable of adsorbing heteropolycompounds.