| 摘要 |
Flame-retardant compositions having an excellent balance of properties are obtained by flame-retarding rubber-modified polystyrenes with a mixture of about 55-95% by weight of a first flame retardant corresponding to the formula: <IMAGE> AND ABOUT 45-5% BY WEIGHT OF A SECOND FLAME RETARDANT CORRESPONDING TO THE FORMULA: <IMAGE> wherein X is bromo or chloro, Y is halo, hydrogen, or an alkyl, haloalkyl, alkoxy, or haloalkoxy group, and Z is a tetravalent hydrocarbon group containing 4-20 carbon atoms. |
