Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Patent
1993-04-12
1994-09-06
Dees, Jose G.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
562593, C07C 5300, C07C 5502, C07C32352
Patent
active
053449711
ABSTRACT:
A process for deodorizing a mercapto acid includes extracting malodorous compounds present therein by treating the mercapto acid in the presence of a polar solvent with a supercritical extraction fluid having a critical temperature ranging from 0.degree. to 135.degree. C. and a critical pressure ranging from 10.sup.6 to 10.sup.7 Pascals. The mercapto acid has the formula HS--A--COOH wherein A represents ##STR1## wherein n is an integer ranging from 1 to 4 and R is a linear or branched C.sub.1 -C.sub.3 alkyl.
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Burgaud Herve
Dedieu Michel
Gurfein Veronique
LaPoirie Eric
Malle Gerard
"L'Oreal"
Dees Jos,e G.
Frazier Barbara S.
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