S-TRIAZINE-RADICAL-CONTAINING POLYETHER POLYOL MIXTURES, PROCESS FOR THEIR PREPARATION AND THEIR USE

摘要

S-TRIAZINE-RADICAL-CONTAINING POLYETHER POLYOL MIXTURES, PROCESS FOR THEIR PREPARATION AND THEIR USE The invention relates to s-triazine radicalcontaining polyether polyol mixtures having functionalities of from 2 to 6 and hydroxyl numbers of from 210 to 640, prepared by the oxyalkylation of a mixture of one or more polyamino-1,3,5-triazines, preferably melamine, and an alkanol having a hydroxyl functionality of from 2 to 6 and having 2 to 18 carbon atoms, water, or their mixtures in the absence of catalysts and conventional inert polar solvents. The resulting polyether polyol mixtures are suitable for the preparation of rigid polyurethane, polyisocyanurate, and urethane group-containing polyisocyanuate foams produced by means of the polyisocyanate polyaddition process.