Method of purifying dry-cleaning solvent
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United States of America Patent
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Aug 18, 1992
Grant Date -
N/A
app pub date -
Sep 5, 1990
filing date -
Dec 23, 1988
priority date (Note) -
Expired
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Abstract
Contaminants containing non-polar neutral lipid are removed from a solvent that has been used for dry cleaning by placing used solvent in contact with a lipase, which is stable and exhibits an activity in the solvent, or with an immobilized product of said lipase, and with an adsorbent.
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