Preparing cellulose ester membranes for gas separation
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United States of America Patent
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Apr 30, 1991
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N/A
app pub date -
Jan 23, 1989
filing date -
Jan 23, 1989
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Expired
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Abstract
This invention relates to a novel composition useful for preparing a semi-permeable cellulose ester gas separation membrane, which composition includes a mixture of a cellulose ester, a solvent selected from the group consisting essentially of glycerol acetate, glycerol diacetate, glycerol triacetate, and mixtures thereof, and optionally the non-solvent glycerol. This invention also relates to a process of fabricating a cellulose ester gas separation membrane from said composition.
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