Patent ID: 8268906

Claim:
A process for producing a flexible polyurethane foam, which comprises reacting a polyol composition (P) with a polyisocyanate compound (I) in the presence of an urethane-forming catalyst and a blowing agent, wherein the polyol composition (P) comprises the following polyol (A), the following polyol (B) and the following monool (D), and the ratio of isocyanate-reactive active hydrogen-containing compounds including the polyol composition (P) in the raw material to the polyisocyanate compound (I) is 65 to 85 by isocyanate index, wherein: Polyol (A) is a polyoxypropylene polyol having an average of from 2 to 3 hydroxyl groups and a hydroxyl value of from 10 to 90 mgKOH/g, obtained by ring-opening polymerization of only propylene oxide to an initiator (a1); Polyol (B) is a polyether polyol having an average of from 2 to 3 hydroxyl groups and a hydroxyl value of from 100 to 250 mgKOH/g, obtained by ring-opening polymerization of an alkylene oxide (b2) to an initiator (b1); Monool (D) is a polyether monool having a hydroxyl value of from 5 to 200 mgKOH/g, obtained by ring-opening polymerization of an alkylene oxide (d2) to an initiator (d1); and the polyisocyanate compound (I) is a toluene diisocyanate (TDI) mixture comprising at least 20 mass % of 2,6-TDI.