PROCESS FOR MAKING COLD-SETTING FLEXIBLE FOAMS, POLYOL COMPOSITION AND REACTION SYSTEM USEFUL THEREFOR, FOAMS THUS OBTAINED

摘要

The invention relates to a polyol composition comprising b1) a polyol where the EO content is at least 50 %; b2) a polyol having a primary hydroxyl content of at least 50 %; b3) an amine-initiated polyoxypropylene polyol having an OH value greater than 400, according to the following proportions: b1 : 20-70 wt %, b2 : 5-50 wt %, b3 : 5-50 wt %. The invention also relates to a process for preparing a cold-setting flexible polyurethane foam at an NCO index of 70-120 by reacting a) a polyisocyanate; the polyols b1), b2), and b3); c) water; and d) additives and auxiliaries known per se. The invention finally relates to a reaction system comprising A) a polyisocyanate and B) an isocyanate-reactive component comprising the polyols b1), b2), and b3).