Method for purifying aliphatic aminonitriles
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United States of America Patent
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May 6, 2003
Grant Date -
N/A
app pub date -
Jan 25, 2001
filing date -
Apr 16, 1998
priority date (Note) -
Expired
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Abstract
The present invention relates to a process for the purification of aliphatic aminonitriles and more particularly of 6-aminocapronitrile. It consists more specifically in subjecting 6-aminocapronitrile to a hydrogenation with molecular hydrogen in the presence of a catalyst comprising at least one metal chosen from palladium, platinum, ruthenium, osmium, iridium or rhodium and a promoter agent or a preconditioning in order to improve the selectivity of the hydrogenation.
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