Patent ID: 8598298

Claim:
A halogen-free, flame-retardant composition comprising: a thermoplastic polyester elastomer comprising alternating hard and soft blocks connected by ester or ether linkages; a low-melting, phosphorus-based flame retardant having a melting temperature no higher than 150° C.; and a blend of solid intumescent flame retardants comprising a phosphorus-based, organic salt flame retardant and a nitrogen-based organic flame retardant; the composition characterized in that a cable consisting of the halogen-free, flame-retardant composition has a higher resistance to scratch-whitening than a cable consisting of a comparative composition that differs from the halogen-free, flame-retardant composition only in that the comparative composition does not include a low-melting, phosphorus-based flame retardant; the total weight percent of the solid intumescent flame retardants in the comparative composition being equal to the total weight percent of the low-melting, phosphorus-based flame retardant and the solid intumescent flame retardants in the halogen-free, flame-retardant composition.