Purification of caprolactam
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United States of America Patent
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-
Jun 10, 1997
Issued Date -
N/A
app pub date -
Aug 30, 1994
filing date -
Sep 8, 1992
priority date (Note) -
Expired
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Abstract
Caprolactam is purified by oxidative treatment in which mixtures which essentially contain the caprolactam to be purified and unsaturated lactams are treated with oxygen or an oxygen-containing gas mixture in an alkaline medium.
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