PROCESS FOR PROCESSING POLYOLS BY EXTRACTING RESIDUES FROM CATALYSTS AND POLYOLS OBTAINED BY USING THE SAME

摘要

The invention relates to the treatment of polyetherpolyols. It relates to a process for removing catalyst residues based on double metal cyanide complexes, contained in polyetherpolyols. According to the invention, the polyetherpolyols are treated with a strong base and then undergo an exchange of ions or a neutralization and a filtration so that the formed polyol is stable and does not have a strong tendency to react with the diisocyanates by forming molecules. allophanates. FURTHERMORE, THE ADDITION OF ETHYLENE OXIDE WHILE THE POLYOL IS IN CONTACT WITH THE STRONG BASE ALLOWS THE DISPOSITION OF TERMINAL PRIMARY HYDROXYL GROUPS. / P P APPLICATION TO THE PREPARATION OF POLYETHERPOLYOLS USEFUL FOR THE MANUFACTURE OF POLYURETHANE. / P