Flame retardant compositions
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United States of America Patent
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Apr 25, 1995
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app pub date -
Oct 18, 1993
filing date -
Nov 4, 1991
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Abstract
The present invention comprises flame retardant composition including a finely dispersed inorganic ultra fine particulate flame or smoke retardant material where the particles are no larger than 500 nanometers (0.50 .mu.) in size. Preferably, the particles used are below 50 (0.050 .mu.) nanometers in size and comprise antimony pentoxide (Sb.sub.2 O.sub.5), the synthetic resin preferably is a polyolefin, preferably polypropylene, and the composition includes a halogenated retardant compound, preferably a brominated alkoxydiphenyl sulfone.
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