Process for preparing N-methyldialkylamines from secondary dialkylamines and formaldehyde
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United States of America Patent
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Jan 3, 2006
Grant Date -
Oct 14, 2004
app pub date -
Mar 19, 2004
filing date -
Apr 10, 2003
priority date (Note) -
Expired
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Abstract
The present invention relates to a process for preparing N-methyldialkyl-amines by reacting secondary dialkylamines with formaldehyde at a temperature of from 100 to 200° C., by using from 1.5 to 3 mol of formaldehyde per mole of secondary dialkylamine and degassing the resulting reaction product, removing the aqueous phase and distilling the organic phase.
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