Petroleum pitch-based carbon foam
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United States of America Patent
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Issued Date -
Sep 16, 2004
app pub date -
Mar 29, 2004
filing date -
Oct 12, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Petroleum or coal tar pitch-based cellular or porous products having a density of preferably between about 0.1 g/cm.sup.3 and about 0.8 g/cm.sup.3 are produced by the controlled heating of mesophase carbon materials derived from coal tar or petroleum pitch having a softening point in excess of about 300.degree. C. and preferably between about 300 and about 400.degree. C. in a 'mold' and under a non-oxidizing atmosphere. The porous product thereby produced, preferably as a net shape or near net shape, can be machined, adhered and otherwise fabricated to produce a wide variety of low cost, low density products.
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