| 摘要 |
The invention concerns impact resistant polymeric compositions having flame-resistance properties and comprising: (1) a blend of (a) 95-80% by weight of a thermoplastic block propylene-ethylene copolymer containing from 3 to 20% by weight of copolymerized ethylene, and (b) 5-20% by weight of an elastomeric ethylene-propylene copolymer containing from 50 to 70% by weight of copolymerized ethylene; (2) 0.5-5% of basic bismuth carbonate (BiO)2CO3; (3) 0.3-1.3% of a triazine compound selected from the group consisting of melamine, ammeline, ammelide, acetoguanamine, benzoguanamine and isocyanuric acid; (4) 2-10% of a chlorinated paraffin wax; and (5) 0.5-10% of a bromine containing organic compound selected from the group consisting of decabromodiphenyl oxide, octabromodiphenyl oxide, pentabromodiphenyl oxide, 1,2-bis(2.4.6-tribromophenoxy)ethane, pentabromophenol, pentabromotoluene and ethyl-pentabromobenzene; all percentages of anti-flame additives being referred to the total weight of the composition. The foregoing compositions are useful in the manufacture of motor vehicles.
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