Disclosed are a polyol composition using carbon dioxide, a method for preparing a polyurethane foam using the polyol composition, and a polyurethane foam prepared using the method. A method for preparing a polyurethane foam includes reacting isocyanate with a polyol composition containing a polyol compound having a synthetic polyol containing carbon dioxide, a chain extender, and a foaming agent.

Provided is a polyether polycarbonate diol, wherein the ratio of the total number of terminal alkoxy groups and terminal aryloxy groups to the total number of all terminal groups is 0.20% or more and 7.5% or less. Controlling the ratio of the total number of terminal alkoxy groups and terminal aryloxy groups to the total number of all terminal groups included in the polyether polycarbonate diol to fall within the preferable range enables a polyurethane having an intended molecular weight to be produced while the occurrence of rapid polymerization reaction is reduced.

Disclosed are a polyol composition using carbon dioxide, a method for preparing a polyurethane foam using the polyol composition, and a polyurethane foam prepared using the method. A method for preparing a polyurethane foam includes reacting isocyanate with a polyol composition containing a polyol compound having a synthetic polyol containing carbon dioxide, a chain extender, and a foaming agent.