Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1982-12-27
1985-06-25
Hoke, Veronica P.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524411, 524412, 524606, 525426, C08K 510
Patent
active
045255130
ABSTRACT:
The present invention is a flame retardant composition comprising from 5 to 20 weight percent of a homopolymer of a monomer having the formula: ##STR1## wherein n=0 or 1, X is bromine or chlorine and R is hydrogen or methyl. The polymer has a molecular weight between 1.times.10.sup.3 and 10.times.10.sup.6, and preferably 5.times.10.sup.3 to 5.times.10.sup.6. The molecular weight is determined by gel permeation chromatography in tetrahydrofuran. The composition contains from 80 to 95 weight percent of a polyamide. 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.
REFERENCES:
patent: 3988284 (1976-10-01), Wurmb et al.
patent: 4128709 (1978-12-01), Vollkomer et al.
patent: 4137212 (1979-01-01), Theyson et al.
patent: 4301058 (1981-11-01), Neukirchen et al.
patent: 4373049 (1983-02-01), Richardson
Haylock John C.
Hochberg Arie
Mason Charles D.
Allied Corporation
Anderson Richard A.
Henry Patrick L.
Hoke Veronica P.
Negin Richard A.
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