Patent ID: 8716379

Claim:
A method of rendering a thermoplastic polyurethane composition flame retardant comprising: mixing a flame retardant package comprising (a) a first non-halogenated flame retardant compound comprising a phosphinate compound, (b) a second non-halogenated flame retardant compound comprising an organic phosphate compound, and (c) a third non-halogenated flame retardant compound comprising a polyhydric alcohol, with a thermoplastic polyurethane polymer wherein the flame retardant package is present in an amount sufficient to confer at least one predetermined flame retardant characteristic to the thermoplastic polyurethane composition the phosphinate compound is present at a level of about 5 to about 40 weight percent; the organic phosphate compound is present at a level of about 5 to about 20 weight percent; and the polyhydric alcohol is present at a level of about 0.1 to about 15 weight percent; wherein the weight percents are based on the total weight of the thermoplastic polyurethane composition.