High-resilient polyurethane foams produced from polyether polyols
View Patent ↗Flexible polyurethane foams are produced from a polyisocyanate and a polyether polyol which has been alkoxylated in the presence of a double metal cyanide catalyst and that has at least one ethylene oxide-propylene oxide mixed block.
1. A flexible polyurethane foam which is the reaction product of
(1) a polyisocyanate with
(2) an isocyanate-reactive component comprising a polyether polyol produced by alkoxylation in the presence of a double metal cyanide catalyst having a terminal propylene oxide block, containing at least one ethylene oxide/propylene oxide mixed block and having a number average molecular weight of from 700 to 50,000 g/mole.
2. The foam of claim 1 which is a hot cured molded foam.
3. The foam of claim 1 which is a slabstock foam.
4. The foam of claim 3 in which at least 50 mole % of the ethylene oxide/propylene oxide mixed block of the polyether polyol comprises polyoxypropylene units.