Agglomerates of precipitated silica, method for their preparation and their use as filter medium for gas filtration
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United States of America Patent
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Jun 15, 2010
Grant Date -
Feb 14, 2008
app pub date -
Dec 23, 2005
filing date -
Dec 27, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
O of 1-4 is prepared. The solutions are mixed and the mixture stirred, allowing a coagulum to immediately form. The coagulum is rinsed, collected, dewatered, impregnated and processed to provide a material having a dry matter content of >75%, preferably >97%. A material obtainable by the process is also provided.
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