VISCOSITY-STABLE ISOCYANATE-TERMINATED PREPOLYMERS AND POLYOXYALKYLENE POLYETHER POLYOLS HAVING IMPROVED STORAGE STABILITY

摘要

Polyoxyalkylene polyols containing double metal cyanide complexes or residues thereof as are produced during the preparation of polyoxyalkylene polyols by the double metal cyanide complex catalyzed oxyalkylation of a suitably functional hydric initiator are stable without catalyst removal. Isocyanate-termi-nated prepolymers prepared from such polyols are sur-prisingly viscosity-stable relative to similar pre-polymers prepared from polyols not containing double metal cyanide complexes or residues thereof.