Production of carbonaceous porous bodies for use in filtration systems
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United States of America Patent
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Issued Date -
May 17, 2012
app pub date -
Oct 3, 2008
filing date -
Oct 5, 2007
priority date (Note) -
Abandoned
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Abstract
A porous, carbonaceous body for use in respiratory protection is produced by making a slurry of carbonaceous powder such as carbon black, a polymeric binder such as polyvinyl alcohol and a solvent, drying and grinding the slurry to yield a ground powder, compacting the powder and heat treating the resulting green body. Alternatively, the slurry is only partially dried to produce a paste, which is compacted and then heat treated. A reactive monomer (plasticizer of cross-linking agent) can be added to the polymeric binder.
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