High surface area iron-magnesium smoke suppressive compositions

Details High surface area iron-magnesium smoke suppressive compositions High surface area iron-magnesium smoke suppressive compositions

A - Human Necessities

24

B

A24B 15/28 (2006.01) A24D 1/02 (2006.01) D21H 21/34 (2006.01)

Patent

CA 2103213

A high surface area oxidative catalyst smoke suppressive composition, smoke suppressive articles, and method of making such compositions and articles are disclosed. The smoke suppressive composition is a solid solution comprising a mixture of iron (Fe) and magnesium (Mg) that promotes efficient combustion, articles treated with such compositions, and methods for making such smoke suppressive compositions and articles. The smoke suppressive composition is made by co-precipitating Fe and Mg from an aqueous solution in the presence of a base. The iron-magnesium composition demonstrates high surface area and efficient combustion for embodiments having iron in an amount from approximately 3 mol% to approximately 30 mol% and magnesium in an amount from approximately 97 mol% to approximately 70 mol%. The compositions provide superior smoke suppression for items such as cigarettes and smoke suppressive articles. The smoke suppressive compositions are particularly useful for reducing cigarette sidestream smoke in cigarettes.

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