Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Patent
1982-04-01
1984-07-03
Trousof, Natalie
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
2604109R, 560204, 560205, 560217, 560234, 560265, 560 80, 560103, C07C 6710
Patent
active
044580886
ABSTRACT:
A continuous process for the production of alkyl esters from carboxylic acids wherein an aqueous stream containing a first carboxylic acid, RCO.sub.2 H, is contacted with an organic stream comprising a carboxylic acid ester, R"CO.sub.2 R', so that the organic stream is enriched with RCO.sub.2 H. The RCO.sub.2 H enriched organic stream is separated from the aqueous stream and is contacted with a catalyst to obtain a second carboxylic acid, R"CO.sub.2 H, and a product carboxylic acid ester, RCO.sub.2 R'. The product ester, RCO.sub.2 R', is separated from the second acid, R"CO.sub.2 H, the reactant ester, R"CO.sub.2 R', and the first acid, RCO.sub.2 H, and the second acid, R"CO.sub.2 H, is esterified to obtain the reactant ester, R"CO.sub.2 R', which is recycled to the initial part of the process. In this process R is aliphatic or aromatic, R' is alkyl and R" is aliphatic with at least about 4 carbon atoms. When the reactant ester is a bifunctional polymer having both sulfonic acid and R' carboxylic acid ester pendant functional groups, this process may be performed in the absence of a catalyst.
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Frye, Jr. John G.
Hardman Harley F.
Mazanec Terry J.
Clarke Vera C.
Evans L. W.
Pawl D. L.
The Standard Oil Company (Sohio)
Trousof Natalie
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