Patent ID: 8444857

Claim:
A method for recovering a fluorinated compound, which compound is at least one selected from the group consisting of a fluorinated compound represented by formula (1) and a fluorinated compound represented by formula (2): R F OR 1 COOH (1) R F OR 1 COOR 2 (2) wherein R F is a linear or branched monovalent fluoroorganic group which may have an etheric oxygen atom in its main chain, R I is a linear or branched bivalent organic group, and R 2 is a linear or branched monovalent organic group, wherein said method comprises distilling: a waste liquid remaining after an aqueous emulsion of a fluoropolymer is coagulated and the fluoropolymer is separated, or an aqueous liquid obtained by cleaning an exhaust gas originating from drying and/or heat treating a fluoropolymer, or a liquid obtained by cleaning an anion exchange resin with an alkaline aqueous solution, at a heating temperature of at most 150° C., wherein said waste liquid, said aqueous liquid and said liquid obtained by cleaning an anion exchange resin comprise at least one fluorinated compound represented by formula (1) or formula (2).