Verfahren zur Deodorisierung von einer Mercaptosäure sowie damit erhältliches Produkt

摘要

Method of deodorising a mercaptoacid of formula HS-A-COOH in which A is: -(CH2)n-; in which most of the malodorous decomposition compounds of the mercaptoacid are extracted using a supercritical fluid consisting of a compound of which the critical temperature is between 0 and 135@C and the critical pressure is between 10<6> and 10<7> pascals, the extraction being carried out in the presence of at least one polar solvent of the mercaptoacid. Deodorised product obtained.