Porous polybenzimidazole resin and method of making same
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United States of America Patent
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Nov 28, 2017
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N/A
app pub date -
Jul 3, 2013
filing date -
Feb 4, 2010
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Abstract
A porous polybenzimidazole (PBI) particulate resin is disclosed. This resin is easily dissolved at ambient temperatures and pressures. The resin is made by: dissolving a virgin PBI resin in a highly polar solvent; precipitating the dissolved PBI in a bath; and drying the precipitated PBI, the dried precipitated PBI being porous. The porous PBI resin may be dissolved by: mixing a porous PBI resin with a highly polar solvent at ambient temperatures and pressures to form a solution.
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