Smoke filter material and use thereof
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United States of America Patent
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-
Jan 20, 1981
Grant Date -
N/A
app pub date -
Jul 17, 1978
filing date -
Jul 19, 1977
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A smoke filter for removing injurious components from the smoke. Comprises a fiber matrix in conjunction with a water-swellable synthetic mica. The fiber matrix may be made of cellulose acetate, regenerated cellulose, or the like. The water-swellable synthetic mica is of the general formula W.sub.1/3 to 1 (X,Y).sub.2.5 to 3 (Si.sub.4 O.sub.10)F.sub.2 wherein W is Na or Li cation, and X and Y represent 6-coordinate ions, for example, Mg and Li. Suitable synthetic micas include Na-tetrasilicic mica, Na-taeniolite, Li-taeniolite, Na-hectorite, and Li-hectorite.
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