METHOD FOR PRODUCING PARTIALLY CRYSTALLINE POLYETHER POLYOLS

摘要

The present invention relates to a process for the preparation of novel, partially crystalline polyether polyols with a functionality of >=2, an average molecular weight Mn of 500 to 100,000 and a molar proportion of isotactic triads determining the crystallinity of >28%. The new polyether polyols are prepared by polymerizing alkylene oxides in the presence of a bimetallic :-oxoalkoxide modified with hydroxyl compounds.