Polyol, polyol composition, and flexible polyurethane foam using the same

Abstract

Disclosed are a polyol with a molecular weight distribution Mw/Mn of 4 or more, obtained by reacting a compound comprising an alkylene oxide compound (II) having a hydroxyl group in a base polyol (I) with a molecular weight of 2000 or more; and a polyol composition for a flexible polyurethane foam, comprising a polyol compound and a crosslinker, wherein the crosslinker comprises a polyol (a) with a hydroxyl value of 50 to 1100 mgKOH/g and with a primary hydroxylate ratio of 25% or more and 60% or less, which is obtained by an addition of a compound comprising alkylene oxide compound (ii) having a hydroxyl group to active hydrogen compound (i).

1 . A polyol composition for a flexible polyurethane foam, comprising a polyol compound and a crosslinker,
 wherein the crosslinker comprises a polyol (a) with a hydroxyl value of 50 to 1100 mgKOH/g and with a primary hydroxylate ratio of 25% or more and 60% or less, which is obtained by an addition of a compound comprising an alkylene oxide compound (ii) having a hydroxyl group to an active hydrogen compound (i).   
     
     
         2 . The polyol composition for a flexible polyurethane foam according to  claim 1 , wherein the active hydrogen compound (i) comprises glycerin or glycidol. 
     
     
         3 . The polyol composition for a flexible polyurethane foam according to  claim 1 , wherein the compound (ii) comprises an epoxide having a hydroxyl group. 
     
     
         4 . The polyol composition for a flexible polyurethane foam according to  claim 3 , wherein the epoxide having a hydroxyl group comprises glycidol. 
     
     
         5 . The polyol composition for a flexible polyurethane foam according to  claim 1 , wherein the polyol compound comprises a polyol (b) with a hydroxyl value of 10 to 80 mgKOH/g. 
     
     
         6 . The polyol composition for a flexible polyurethane foam according to  claim 5 , wherein the polyol (b) is at least one polyol selected from polyether polyols and polymer dispersed polyols. 
     
     
         7 . A flexible polyurethane foam, obtained by reacting the polyol composition according to  claim 1  and an isocyanate compound. 
     
     
         8 . A resin premix for a flexible polyurethane foam, comprising the polyol composition for a flexible polyurethane foam according to  claim 1  and another additive. 
     
     
         9 . The resin premix for a flexible polyurethane foam according to  claim 8 , wherein the another additive comprises a catalyst. 
     
     
         10 . The resin premix for a flexible polyurethane foam according to  claim 9 , wherein the another additive further comprises a surfactant and/or a foaming agent. 
     
     
         11 . A flexible polyurethane foam, obtained by reacting the resin premix according to  claim 8  and an isocyanate compound.