Self-Bonding Polypridobismidazole Pulp and a Process for Making Same
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United States of America Patent
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Issued Date -
Apr 23, 2009
app pub date -
Dec 19, 2006
filing date -
Dec 21, 2005
priority date (Note) -
Abandoned
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Abstract
The invention concerns a fibrous pulp comprising polypyridobisimidazole fiber, the pulp having a Canadian Standard Freeness (CSF) of no more than about 650 ml, a specific surface area of from 0.5 to 50 square meters per gram, a length-weighted average length of from 0.5 to 2.0 mm, and a equilibrium moisture content of greater than 10 percent by weight. Also provided are papers made from such pulp and processes for making the pulp.
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