| 摘要 |
The present invention is a flame retardant composition comprising from 5 to 20 weight percent of a homopolymer of a monomer having the formula: <IMAGE> wherein n=0 or 1, X is bromine or chlorine and R is hydrogen or methyl. The polymer has a molecular weight between 1x103 and 10x106, and preferably 5x103 to 5x106. The molecular weight is determined by gel permeation chromotography in tetrahydrofuran. The composition contains from 80 to 95 weight percent of a polyamide having an excess of polymer chain ends terminated with amine groups. There can be from 0 to 10, preferably 1 to 10, and more preferably 2 to 6 weight percent of antimony oxide. Optionally, the composition can contain an impact modifier and/or a filler.
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