Process for preparing carboxylic acid derivatives
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United States of America Patent
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Oct 16, 2012
Grant Date -
Jul 16, 2009
app pub date -
Jun 1, 2007
filing date -
Aug 23, 2006
priority date (Note) -
Expired
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Abstract
The present invention relates to processes for preparing carboxylic acid derivatives, comprising the reaction of at least one carboxylic acid and/or of a carboxylic acid derivative with at least one alcohol and/or an amine in the presence of a metal-containing catalyst, wherein, after the reaction has ended, the metal-containing catalyst is contacted with water and a superabsorbent, the contacting of the catalyst with the water leading to hydrolysis of the catalyst. The present invention further relates to the use of superabsorbents for removing a metal-containing catalyst from a mixture after hydrolysis of the catalyst.
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