Isopropylidene diphenol-based polyether polyols, method for their production and foams made therefrom

The present invention relates to isopropylidene diphenol-based polyether polyols, to a method for the production thereof, to foams, such as PUR-PIR rigid foams, produced using such isopropylidene diphenol-based polyether polyols, and to a method for the production of such foams. The polyether polyol has an inner block containing a polymerized ethylene oxide moiety and an outer capping containing a polymerized propylene oxide moiety. 本发明涉及基于异丙叉基二苯酚的聚醚多元醇、它们的生产方法、使用这样的基于异丙叉基二苯酚的聚醚多元醇制成的泡沫，如PUR-PIR硬质泡沫，以及生产这样的泡沫的方法。所述聚醚多元醇具有含有聚合环氧乙烷部分的内部嵌段和含有聚合环氧丙烷部分的外部封端。