Patent ID: 8017676

Claim:
A halogen-free flame retardant thermoplastic polyurethane composite resin composition comprising: (a) 35 to 85 percent by weight of thermoplastic polyurethane resin having an equivalent ratio of a diisocyanate to an alcohol group included in diol and polyol in a range from 0.95 to 1.10; (b) a flame retardant package comprising; 0.5 to 15 percent by weight of organic phosphorus flame retardant; 0.5 to 10 percent by weight of dipentaerythritol; 0.5 to 5 percent weight of talc; and 5 to 35 percent by weight of melamine derivative, wherein the flame retardant particle size ranges from 1 to 60 μm, resulting in a composition with improved flame retardancy.