| abstract |
A polystyrene resin composition is prepared by adding to polystyrene resin, a mixture of (a) tricresyl phosphate and/or triphenyl phosphate and (b) a carbonate oligomer of 2,2-(4-4'-dihydroxy-3,3,',5,5'-tetrabromodiphenyl) propane which is terminated at its ends with a monofunctional phenol. These compounds are mixed with the oligomer in a selected mole ratio. The resin composition is self-extinguishing and possesses excellent thermal resistance, without diminution of the other original desireable properties of the resin. |