| 摘要 |
The present invention provides a non-foamed flame-retardant article of polymeric composition comprising at least 20% by weight of a monomer mixture comprising 0-0.1% by weight o-methylstyrene 0-15% by weight m-methylstryene and at least 85% by weight p-methylstyrene; 0-80% by weight of a different ethylenic unsaturated monomer; and a sufficient amount of flame-retardants wherein the amount of flame-retardants is substantially less than would be needed had the p-methylstryene been replaced with styrene analogs. The flame retardancy may be achieved by the addition of antimony compounds and halide flame retardants. High impact resistance is achieved by the incorporation of a rubber polymer into the polymeric composition.
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