Patent ID: 8524813

Claim:
A flame-retarded styrene-containing polymer composition, which comprises a styrene-containing polymer at a concentration of not less than 50 wt %, said polymer being selected from the group consisting of High Impact Polystyrene (HIPS) and acrylonitrile butadiene styrene copolymer (ABS), 0.5-1.5 wt % antimony trioxide, tris(2,4,6-tribromophenoxy)-s-triazine and an anti-dripping agent, wherein the bromine content of the composition provided by said tris(2,4,6-tribromophenoxy)-s-triazine, {Bromine (FR-245) }, is in the range between 8 and 18 wt %, and when the styrene-containing polymer is high impact polystyrene (HIPS), then said Bromine (FR-245) is related to the weight concentration of said antimony trioxide {[Sb 2 O 3 ]} by the following inequalities: Bromine (FR-245) ≧−4×[Sb 2 O 3 ]+15, for 1.0≦[Sb 2 O 3 ]≦1.5 (i) Bromine (FR-245) ≧−10×[Sb 2 O 3 ]+21, for 0.5≦[Sb 2 O 3 ]<1.0 (ii) with the percentages being by weight relative to the total weight of the flame-retarded styrene-containing polymer composition, wherein the composition meets a UL 94 rating of V-1 or V-0.