The present invention relates to a flame retardant slabstock polyurethane foam composition which has its own flame retardant performance and does not require the addition of a separate flame retardant additive. The polyurethane foam composition according to the present invention contains a polyether polyol having a different molecular weight range as a polyol component, and at the same time, by lowering the isocyanate index to 70 to 95, the foam itself has flame retardant performance to have an effect of no need to add a separate flame retardant additive. In addition, problems of deterioration of physical properties caused by addition of a flame retardant additive can be solved in a conventional flame retardant slabstock polyurethane foam composition.;COPYRIGHT KIPO 2017
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