Patent ID: 8354463

Claim:
An essentially halogen-free thermoplastic elastomer compound, comprising: (a) styrene-containing thermoplastic elastomer; (b) an ammonium polyphosphate-containing flame retardant; (c) expandable graphite filler; (d) plasticizer; and (e) polypropylene; wherein the styrene-containing thermoplastic elastomer is selected from the group consisting of styrene-ethylene-butylene-styrene, styrene-ethylene-propylene-styrene, styrene-ethylene-ethylene/propylene-styrene, styrene-isobutylene-styrene, styrene-butadiene-styrene, styrene-isoprene-styrene, and combinations thereof; and wherein weight percents of the ingredients comprise Styrene-containing thermoplastic elastomer 10-35% Flame retardant containing ammonium polyphosphate 25-60% Plasticizer 10-40% Polypropylene(s) 5-25% Expandable graphite filler 10-25% Anti-oxidant 0-2% Thermal Stabilizer 0-2% Other Optional Additives 0-10%.