Bromide intercalated hydrotalcite for use as a flame retardant, smoke suppressant additive
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United States of America Patent
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Jul 6, 1993
Issued Date -
N/A
app pub date -
Oct 15, 1990
filing date -
Dec 21, 1988
priority date (Note) -
Expired
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Abstract
A filler material for use in a polymer or paper system. The filler material is formed by heating hydrotalcite to less than approximately 600.degree. C. to remove most of the carbonate and water of hydration; submersing the hydrotalcite in a NaBr solution for 1-24 hours in a nitrogen atmosphere to form a bromide intercalated hydrotalcite; and adding the bromide intercalated hydrotalcite as a 25-65 wt % filler in a polymer system selected from the group of polypropylene, polybutylene terephtalate, nylon, and acrylonitrile-butadiene-styrene.
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