Membrane process for treating a mixture containing dewaxed oil and dewaxing solvent
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United States of America Patent
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Mar 3, 1992
Issued Date -
N/A
app pub date -
Jul 5, 1991
filing date -
Apr 29, 1991
priority date (Note) -
Expired
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Abstract
Charge containing dewaxed oil and dewaxing solvent (typically methyl ethyl ketone and toluene) is treated to separate dewaxing solvent by use of a separating elastomer membrane barrier of a polysiloxane which has been cross-linked as with toluene diisocyanate, adipoyl dichloride, a dialkoxy silane, or a diacetoxy silane.
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