Alkoxylation method of fatty acid alkyl esters
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United States of America Patent
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Jun 16, 2015
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Jun 13, 2013
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Aug 11, 2011
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Sep 2, 2010
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Abstract
The present invention is directed towards a method of preparing alkoxylated fatty acid alkyl estersin a one-pot alkoxylation reaction in the presence of a catalyst which is an alkaline earth metal oxide/mineral acid combination, preferably a barium oxide/sulfuric acid combination, or a Lewis acid, preferably Sn Cl4, comprising the steps of: a) providing a fatty acid alkyl ester, b) adding a catalyst to said fatty acid alkyl ester to obtain a first mixture, wherein said catalyst is an alkaline earth metal oxide/mineral acid combination or a Lewis acid, c) adding one or more alkylene oxides to said first mixture to obtain a second mixture and (d) isolating the alkoxylated fatty acid alkyl ester.
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