A fluorocarboxylic acid preparation process continuously carries out acidification reaction treatment and washing treatment, and includes subjecting a fluorocarboxylate-containing aqueous solution to acidification reaction treatment in the presence of sulfuric acid so as to form a sulfate-containing fluorocarboxylic acid phase; and subjecting the fluorocarboxylic acid phase to washing treatment using an aqueous sulfuric acid solution.
申请公布号
WO2004031141(A2)
申请公布日期
2004.04.15
申请号
WO2003US28548
申请日期
2003.09.29
申请人
DAIKIN INDUSTRIES, LTD.;E.I. DU PONT DE NEMOURS AND COMPANY;FU, TA-WEI;SWEARINGEN, STEVEN, H.;ICHIDA, TAKUYA;ITATANI, SHUJI