Purification method of Cyclohexanone-oxime
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United States of America Patent
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Aug 31, 2004
Grant Date -
Jan 16, 2003
app pub date -
Jun 27, 2002
filing date -
Jun 28, 2001
priority date (Note) -
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Abstract
The invention relates to a purification method of cyclohexanone-oxime in a solution of solvents immiscible with water, which consists in washing said solutions with water or with an aqueous solution of a base having a pK<5 or in passing the solutions of cyclohexanone-oxime through a weakly alkaline ion exchange resin and, optionally, also through a weakly acid ion exchange resin.
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