The flame retardant composition of a polyurethane block foam for flame lamination

The present disclosure provides a flame retardant composition of a polyurethane block foam for flame lamination prepared in which the addition of a separate flame-retardant additive is not necessary, since the polyurethane itself has a flame protection. It is the flame-retardant composition of a polyurethane block foam for flame lamination according to the present disclosure provided, wherein the foam due to its content of methylene diphenyl diisocyanate (MDI), Polymethylendiphenyldiisocyanat (PMDI) or a mixture thereof as an isocyanate compound itself has a flame retardancy, whereby the unique effect is achieved that no separate flame retardants must be added and a solution of the problem that physical properties of the conventional composition of a polyurethane block foam are affected by the addition of a flame retardant may be effected.